GET https://kbin.spritesserver.nl/m/askelectronics@discuss.tchncs.de/t/18532/Sanity-check-for-LiFePO4-Charger-Design

Response
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Profiled on
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Components

24 Twig Components
167 Render Count
311 ms Render Time
16.0 MiB Memory Usage

Components

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      So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
      \n
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        **For questions about component-level electronic circuits, tools and equipment.**\n
        \n
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        -----\n
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        \n
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      So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
      \n
      However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
      \n
      I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
      \n
      Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
      \n
      Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
      """
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}
user_inline App\Twig\Components\UserInlineComponent 12.0 MiB 0.43 ms
Input props 
[
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Attributes 
[]
Component 
App\Twig\Components\UserInlineComponent {#3128
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date App\Twig\Components\DateComponent 12.0 MiB 0.56 ms
Input props 
[
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]
Attributes 
[]
Component 
App\Twig\Components\DateComponent {#3198
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}
date_edited App\Twig\Components\DateEditedComponent 12.0 MiB 0.18 ms
Input props 
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]
Attributes 
[]
Component 
App\Twig\Components\DateEditedComponent {#3262
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}
vote App\Twig\Components\VoteComponent 12.0 MiB 0.44 ms
Input props 
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    }
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        **For questions about component-level electronic circuits, tools and equipment.**\n
        \n
        Rules\n
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        \n
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        \n
        2: Be on-topic (eg: *Electronic*, not *electrical*).\n
        \n
        3: No commercial stuff, buying, selling or valuations.\n
        \n
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    +image: null
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      So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
      \n
      However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
      \n
      I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
      \n
      Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
      \n
      Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
      """
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Attributes 
[]
Component 
App\Twig\Components\VoteComponent {#3327
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entry_comment App\Twig\Components\EntryCommentComponent 12.0 MiB 27.89 ms
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          \n
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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      Get a board with a TP5000. [Like this one here](https://www.aliexpress.com/item/1005004950011414.html).\n
      \n
      Don’t charge LFP to 4.2 volt! The crude “check voltage and if below 3.6 V keep charging” is okay too as long as the maximum current is within battery spec. But measure while charging, don’t turn that off to measure the open circuit voltage.
      """
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        +name: "askelectronics@discuss.tchncs.de"
        +title: "askelectronics"
        +description: """
          **For questions about component-level electronic circuits, tools and equipment.**\n
          \n
          Rules\n
          -----\n
          \n
          1: Be nice.\n
          \n
          2: Be on-topic (eg: *Electronic*, not *electrical*).\n
          \n
          3: No commercial stuff, buying, selling or valuations.\n
          \n
          4: Be safe.\n
          \n
          ---
          """
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      +slug: "Sanity-check-for-LiFePO4-Charger-Design"
      +title: "Sanity check for LiFePO4 Charger Design"
      +url: null
      +body: """
        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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    +magazine: App\Entity\Magazine {#266}
    +image: null
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      Get a board with a TP5000. [Like this one here](https://www.aliexpress.com/item/1005004950011414.html).\n
      \n
      Don’t charge LFP to 4.2 volt! The crude “check voltage and if below 3.6 V keep charging” is okay too as long as the maximum current is within battery spec. But measure while charging, don’t turn that off to measure the open circuit voltage.
      """
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user_inline App\Twig\Components\UserInlineComponent 12.0 MiB 0.14 ms
Input props 
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Component 
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Input props 
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Attributes 
[]
Component 
App\Twig\Components\DateComponent {#4547
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Attributes 
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Component 
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Input props 
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Attributes 
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Component 
App\Twig\Components\UserAvatarComponent {#4657
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vote App\Twig\Components\VoteComponent 12.0 MiB 0.33 ms
Input props 
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          \n
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          -----\n
          \n
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          \n
          2: Be on-topic (eg: *Electronic*, not *electrical*).\n
          \n
          3: No commercial stuff, buying, selling or valuations.\n
          \n
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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      Get a board with a TP5000. [Like this one here](https://www.aliexpress.com/item/1005004950011414.html).\n
      \n
      Don’t charge LFP to 4.2 volt! The crude “check voltage and if below 3.6 V keep charging” is okay too as long as the maximum current is within battery spec. But measure while charging, don’t turn that off to measure the open circuit voltage.
      """
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Attributes 
[]
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
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        \n
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      Get a board with a TP5000. [Like this one here](https://www.aliexpress.com/item/1005004950011414.html).\n
      \n
      Don’t charge LFP to 4.2 volt! The crude “check voltage and if below 3.6 V keep charging” is okay too as long as the maximum current is within battery spec. But measure while charging, don’t turn that off to measure the open circuit voltage.
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
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        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
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        \n
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        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
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      Get a board with a TP5000. [Like this one here](https://www.aliexpress.com/item/1005004950011414.html).\n
      \n
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      """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
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        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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      Get a board with a TP5000. [Like this one here](https://www.aliexpress.com/item/1005004950011414.html).\n
      \n
      Don’t charge LFP to 4.2 volt! The crude “check voltage and if below 3.6 V keep charging” is okay too as long as the maximum current is within battery spec. But measure while charging, don’t turn that off to measure the open circuit voltage.
      """
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      +slug: "Sanity-check-for-LiFePO4-Charger-Design"
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
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      Get a board with a TP5000. [Like this one here](https://www.aliexpress.com/item/1005004950011414.html).\n
      \n
      Don’t charge LFP to 4.2 volt! The crude “check voltage and if below 3.6 V keep charging” is okay too as long as the maximum current is within battery spec. But measure while charging, don’t turn that off to measure the open circuit voltage.
      """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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      Get a board with a TP5000. [Like this one here](https://www.aliexpress.com/item/1005004950011414.html).\n
      \n
      Don’t charge LFP to 4.2 volt! The crude “check voltage and if below 3.6 V keep charging” is okay too as long as the maximum current is within battery spec. But measure while charging, don’t turn that off to measure the open circuit voltage.
      """
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        An international parts order is too complex for such a small thing. I’m not in the USA or China. So no TP5000 for me, got to work with what I have.\n
        \n
        I agree, no charging at 4.2 volts. The current charger I built seems to work well enough. I ran some tests and it charges within spec. The reason I turn off the charger to measure cell voltage is because otherwise I’ll mainly be measuring SMPS noise.\n
        \n
        Anyway it beats the charger available in the local market, which is clearly unsafe, no matter how much they assure me that it’s ‘totally OK’.
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
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        Get a board with a TP5000. [Like this one here](https://www.aliexpress.com/item/1005004950011414.html).\n
        \n
        Don’t charge LFP to 4.2 volt! The crude “check voltage and if below 3.6 V keep charging” is okay too as long as the maximum current is within battery spec. But measure while charging, don’t turn that off to measure the open circuit voltage.
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      An international parts order is too complex for such a small thing. I’m not in the USA or China. So no TP5000 for me, got to work with what I have.\n
      \n
      I agree, no charging at 4.2 volts. The current charger I built seems to work well enough. I ran some tests and it charges within spec. The reason I turn off the charger to measure cell voltage is because otherwise I’ll mainly be measuring SMPS noise.\n
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      Anyway it beats the charger available in the local market, which is clearly unsafe, no matter how much they assure me that it’s ‘totally OK’.
      """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
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        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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        Get a board with a TP5000. [Like this one here](https://www.aliexpress.com/item/1005004950011414.html).\n
        \n
        Don’t charge LFP to 4.2 volt! The crude “check voltage and if below 3.6 V keep charging” is okay too as long as the maximum current is within battery spec. But measure while charging, don’t turn that off to measure the open circuit voltage.
        """
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      An international parts order is too complex for such a small thing. I’m not in the USA or China. So no TP5000 for me, got to work with what I have.\n
      \n
      I agree, no charging at 4.2 volts. The current charger I built seems to work well enough. I ran some tests and it charges within spec. The reason I turn off the charger to measure cell voltage is because otherwise I’ll mainly be measuring SMPS noise.\n
      \n
      Anyway it beats the charger available in the local market, which is clearly unsafe, no matter how much they assure me that it’s ‘totally OK’.
      """
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  +showMagazineName: false
  +showEntryTitle: false
  +showNested: true
  +level: 2
  +canSeeTrash: false
  +dateAsUrl: false
  -requestStack: Symfony\Component\HttpFoundation\RequestStack {#1328 …}
  -authorizationChecker: Symfony\Component\Security\Core\Authorization\AuthorizationChecker {#931 …}
}
user_inline App\Twig\Components\UserInlineComponent 12.0 MiB 0.13 ms
Input props 
[
  "user" => Proxies\__CG__\App\Entity\User {#1943
    +avatar: null
    +cover: null
    +email: "Saigonauticon@voltage.vn"
    +username: "@Saigonauticon@voltage.vn"
    +roles: []
    +followersCount: 0
    +homepage: "front"
    +about: null
    +lastActive: DateTime @1703981706 {#1516
      date: 2023-12-31 01:15:06.0 +01:00
    }
    +markedForDeletionAt: null
    +fields: null
    +oauthGithubId: null
    +oauthGoogleId: null
    +oauthFacebookId: null
    +oauthKeycloakId: null
    +hideAdult: true
    +showSubscribedUsers: true
    +showSubscribedMagazines: true
    +showSubscribedDomains: true
    +preferredLanguages: []
    +featuredMagazines: null
    +showProfileSubscriptions: true
    +showProfileFollowings: true
    +markNewComments: false
    +notifyOnNewEntry: false
    +notifyOnNewEntryReply: false
    +notifyOnNewEntryCommentReply: false
    +notifyOnNewPost: false
    +notifyOnNewPostReply: false
    +notifyOnNewPostCommentReply: false
    +addMentionsEntries: false
    +addMentionsPosts: true
    +isBanned: false
    +isVerified: false
    +isDeleted: false
    +isBot: false
    +spamProtection: true
    +customCss: null
    +ignoreMagazinesCustomCss: false
    +moderatorTokens: Doctrine\ORM\PersistentCollection {#1632 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#1406 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#1713 …}
    +entries: Doctrine\ORM\PersistentCollection {#1710 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#1742 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#1659 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#1470 …}
    +posts: Doctrine\ORM\PersistentCollection {#1746 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#1490 …}
    +postComments: Doctrine\ORM\PersistentCollection {#1772 …}
    +postCommentVotes: Doctrine\ORM\PersistentCollection {#1622 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#1758 …}
    +subscribedDomains: Doctrine\ORM\PersistentCollection {#1450 …}
    +follows: Doctrine\ORM\PersistentCollection {#1422 …}
    +followers: Doctrine\ORM\PersistentCollection {#1660 …}
    +blocks: Doctrine\ORM\PersistentCollection {#1454 …}
    +blockers: Doctrine\ORM\PersistentCollection {#1425 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#1439 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#1428 …}
    +reports: Doctrine\ORM\PersistentCollection {#1461 …}
    +favourites: Doctrine\ORM\PersistentCollection {#1438 …}
    +violations: Doctrine\ORM\PersistentCollection {#1697 …}
    +notifications: Doctrine\ORM\PersistentCollection {#1690 …}
    +awards: Doctrine\ORM\PersistentCollection {#1429 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#1612 …}
    +categories: Doctrine\ORM\PersistentCollection {#1675 …}
    -id: 269
    -password: "$2y$13$UYqaD7bZp4O.OwB02SlMIeKWP1aeHwuKf.UMqd1I/0STqvflxyU5K"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#1668 …}
    +apId: "Saigonauticon@voltage.vn"
    +apProfileId: "https://voltage.vn/u/Saigonauticon"
    +apPublicUrl: "https://voltage.vn/u/Saigonauticon"
    +apFollowersUrl: null
    +apInboxUrl: "https://voltage.vn/inbox"
    +apDomain: "voltage.vn"
    +apPreferredUsername: "Saigonauticon"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: false
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1709584336 {#1537
      date: 2024-03-04 21:32:16.0 +01:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1686890246 {#1515
      date: 2023-06-16 06:37:26.0 +02:00
    }
    +__isInitialized__: true
     …2
  }
  "showAvatar" => false
]
Attributes 
[]
Component 
App\Twig\Components\UserInlineComponent {#5175
  +user: Proxies\__CG__\App\Entity\User {#1943
    +avatar: null
    +cover: null
    +email: "Saigonauticon@voltage.vn"
    +username: "@Saigonauticon@voltage.vn"
    +roles: []
    +followersCount: 0
    +homepage: "front"
    +about: null
    +lastActive: DateTime @1703981706 {#1516
      date: 2023-12-31 01:15:06.0 +01:00
    }
    +markedForDeletionAt: null
    +fields: null
    +oauthGithubId: null
    +oauthGoogleId: null
    +oauthFacebookId: null
    +oauthKeycloakId: null
    +hideAdult: true
    +showSubscribedUsers: true
    +showSubscribedMagazines: true
    +showSubscribedDomains: true
    +preferredLanguages: []
    +featuredMagazines: null
    +showProfileSubscriptions: true
    +showProfileFollowings: true
    +markNewComments: false
    +notifyOnNewEntry: false
    +notifyOnNewEntryReply: false
    +notifyOnNewEntryCommentReply: false
    +notifyOnNewPost: false
    +notifyOnNewPostReply: false
    +notifyOnNewPostCommentReply: false
    +addMentionsEntries: false
    +addMentionsPosts: true
    +isBanned: false
    +isVerified: false
    +isDeleted: false
    +isBot: false
    +spamProtection: true
    +customCss: null
    +ignoreMagazinesCustomCss: false
    +moderatorTokens: Doctrine\ORM\PersistentCollection {#1632 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#1406 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#1713 …}
    +entries: Doctrine\ORM\PersistentCollection {#1710 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#1742 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#1659 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#1470 …}
    +posts: Doctrine\ORM\PersistentCollection {#1746 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#1490 …}
    +postComments: Doctrine\ORM\PersistentCollection {#1772 …}
    +postCommentVotes: Doctrine\ORM\PersistentCollection {#1622 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#1758 …}
    +subscribedDomains: Doctrine\ORM\PersistentCollection {#1450 …}
    +follows: Doctrine\ORM\PersistentCollection {#1422 …}
    +followers: Doctrine\ORM\PersistentCollection {#1660 …}
    +blocks: Doctrine\ORM\PersistentCollection {#1454 …}
    +blockers: Doctrine\ORM\PersistentCollection {#1425 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#1439 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#1428 …}
    +reports: Doctrine\ORM\PersistentCollection {#1461 …}
    +favourites: Doctrine\ORM\PersistentCollection {#1438 …}
    +violations: Doctrine\ORM\PersistentCollection {#1697 …}
    +notifications: Doctrine\ORM\PersistentCollection {#1690 …}
    +awards: Doctrine\ORM\PersistentCollection {#1429 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#1612 …}
    +categories: Doctrine\ORM\PersistentCollection {#1675 …}
    -id: 269
    -password: "$2y$13$UYqaD7bZp4O.OwB02SlMIeKWP1aeHwuKf.UMqd1I/0STqvflxyU5K"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#1668 …}
    +apId: "Saigonauticon@voltage.vn"
    +apProfileId: "https://voltage.vn/u/Saigonauticon"
    +apPublicUrl: "https://voltage.vn/u/Saigonauticon"
    +apFollowersUrl: null
    +apInboxUrl: "https://voltage.vn/inbox"
    +apDomain: "voltage.vn"
    +apPreferredUsername: "Saigonauticon"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: false
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1709584336 {#1537
      date: 2024-03-04 21:32:16.0 +01:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1686890246 {#1515
      date: 2023-06-16 06:37:26.0 +02:00
    }
    +__isInitialized__: true
     …2
  }
  +showAvatar: false
}
date App\Twig\Components\DateComponent 12.0 MiB 0.36 ms
Input props 
[
  "date" => DateTimeImmutable @1702369096 {#4277
    date: 2023-12-12 09:18:16.0 +01:00
  }
]
Attributes 
[]
Component 
App\Twig\Components\DateComponent {#5230
  +date: DateTimeImmutable @1702369096 {#4277
    date: 2023-12-12 09:18:16.0 +01:00
  }
}
date_edited App\Twig\Components\DateEditedComponent 12.0 MiB 0.09 ms
Input props 
[
  "createdAt" => DateTimeImmutable @1702369096 {#4277
    date: 2023-12-12 09:18:16.0 +01:00
  }
  "editedAt" => null
]
Attributes 
[]
Component 
App\Twig\Components\DateEditedComponent {#5284
  +createdAt: DateTimeImmutable @1702369096 {#4277
    date: 2023-12-12 09:18:16.0 +01:00
  }
  +editedAt: null
}
user_avatar App\Twig\Components\UserAvatarComponent 12.0 MiB 0.13 ms
Input props 
[
  "user" => Proxies\__CG__\App\Entity\User {#1943
    +avatar: null
    +cover: null
    +email: "Saigonauticon@voltage.vn"
    +username: "@Saigonauticon@voltage.vn"
    +roles: []
    +followersCount: 0
    +homepage: "front"
    +about: null
    +lastActive: DateTime @1703981706 {#1516
      date: 2023-12-31 01:15:06.0 +01:00
    }
    +markedForDeletionAt: null
    +fields: null
    +oauthGithubId: null
    +oauthGoogleId: null
    +oauthFacebookId: null
    +oauthKeycloakId: null
    +hideAdult: true
    +showSubscribedUsers: true
    +showSubscribedMagazines: true
    +showSubscribedDomains: true
    +preferredLanguages: []
    +featuredMagazines: null
    +showProfileSubscriptions: true
    +showProfileFollowings: true
    +markNewComments: false
    +notifyOnNewEntry: false
    +notifyOnNewEntryReply: false
    +notifyOnNewEntryCommentReply: false
    +notifyOnNewPost: false
    +notifyOnNewPostReply: false
    +notifyOnNewPostCommentReply: false
    +addMentionsEntries: false
    +addMentionsPosts: true
    +isBanned: false
    +isVerified: false
    +isDeleted: false
    +isBot: false
    +spamProtection: true
    +customCss: null
    +ignoreMagazinesCustomCss: false
    +moderatorTokens: Doctrine\ORM\PersistentCollection {#1632 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#1406 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#1713 …}
    +entries: Doctrine\ORM\PersistentCollection {#1710 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#1742 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#1659 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#1470 …}
    +posts: Doctrine\ORM\PersistentCollection {#1746 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#1490 …}
    +postComments: Doctrine\ORM\PersistentCollection {#1772 …}
    +postCommentVotes: Doctrine\ORM\PersistentCollection {#1622 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#1758 …}
    +subscribedDomains: Doctrine\ORM\PersistentCollection {#1450 …}
    +follows: Doctrine\ORM\PersistentCollection {#1422 …}
    +followers: Doctrine\ORM\PersistentCollection {#1660 …}
    +blocks: Doctrine\ORM\PersistentCollection {#1454 …}
    +blockers: Doctrine\ORM\PersistentCollection {#1425 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#1439 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#1428 …}
    +reports: Doctrine\ORM\PersistentCollection {#1461 …}
    +favourites: Doctrine\ORM\PersistentCollection {#1438 …}
    +violations: Doctrine\ORM\PersistentCollection {#1697 …}
    +notifications: Doctrine\ORM\PersistentCollection {#1690 …}
    +awards: Doctrine\ORM\PersistentCollection {#1429 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#1612 …}
    +categories: Doctrine\ORM\PersistentCollection {#1675 …}
    -id: 269
    -password: "$2y$13$UYqaD7bZp4O.OwB02SlMIeKWP1aeHwuKf.UMqd1I/0STqvflxyU5K"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#1668 …}
    +apId: "Saigonauticon@voltage.vn"
    +apProfileId: "https://voltage.vn/u/Saigonauticon"
    +apPublicUrl: "https://voltage.vn/u/Saigonauticon"
    +apFollowersUrl: null
    +apInboxUrl: "https://voltage.vn/inbox"
    +apDomain: "voltage.vn"
    +apPreferredUsername: "Saigonauticon"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: false
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1709584336 {#1537
      date: 2024-03-04 21:32:16.0 +01:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1686890246 {#1515
      date: 2023-06-16 06:37:26.0 +02:00
    }
    +__isInitialized__: true
     …2
  }
  "width" => 40
  "height" => 40
  "asLink" => true
]
Attributes 
[]
Component 
App\Twig\Components\UserAvatarComponent {#5338
  +width: 40
  +height: 40
  +user: Proxies\__CG__\App\Entity\User {#1943
    +avatar: null
    +cover: null
    +email: "Saigonauticon@voltage.vn"
    +username: "@Saigonauticon@voltage.vn"
    +roles: []
    +followersCount: 0
    +homepage: "front"
    +about: null
    +lastActive: DateTime @1703981706 {#1516
      date: 2023-12-31 01:15:06.0 +01:00
    }
    +markedForDeletionAt: null
    +fields: null
    +oauthGithubId: null
    +oauthGoogleId: null
    +oauthFacebookId: null
    +oauthKeycloakId: null
    +hideAdult: true
    +showSubscribedUsers: true
    +showSubscribedMagazines: true
    +showSubscribedDomains: true
    +preferredLanguages: []
    +featuredMagazines: null
    +showProfileSubscriptions: true
    +showProfileFollowings: true
    +markNewComments: false
    +notifyOnNewEntry: false
    +notifyOnNewEntryReply: false
    +notifyOnNewEntryCommentReply: false
    +notifyOnNewPost: false
    +notifyOnNewPostReply: false
    +notifyOnNewPostCommentReply: false
    +addMentionsEntries: false
    +addMentionsPosts: true
    +isBanned: false
    +isVerified: false
    +isDeleted: false
    +isBot: false
    +spamProtection: true
    +customCss: null
    +ignoreMagazinesCustomCss: false
    +moderatorTokens: Doctrine\ORM\PersistentCollection {#1632 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#1406 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#1713 …}
    +entries: Doctrine\ORM\PersistentCollection {#1710 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#1742 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#1659 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#1470 …}
    +posts: Doctrine\ORM\PersistentCollection {#1746 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#1490 …}
    +postComments: Doctrine\ORM\PersistentCollection {#1772 …}
    +postCommentVotes: Doctrine\ORM\PersistentCollection {#1622 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#1758 …}
    +subscribedDomains: Doctrine\ORM\PersistentCollection {#1450 …}
    +follows: Doctrine\ORM\PersistentCollection {#1422 …}
    +followers: Doctrine\ORM\PersistentCollection {#1660 …}
    +blocks: Doctrine\ORM\PersistentCollection {#1454 …}
    +blockers: Doctrine\ORM\PersistentCollection {#1425 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#1439 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#1428 …}
    +reports: Doctrine\ORM\PersistentCollection {#1461 …}
    +favourites: Doctrine\ORM\PersistentCollection {#1438 …}
    +violations: Doctrine\ORM\PersistentCollection {#1697 …}
    +notifications: Doctrine\ORM\PersistentCollection {#1690 …}
    +awards: Doctrine\ORM\PersistentCollection {#1429 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#1612 …}
    +categories: Doctrine\ORM\PersistentCollection {#1675 …}
    -id: 269
    -password: "$2y$13$UYqaD7bZp4O.OwB02SlMIeKWP1aeHwuKf.UMqd1I/0STqvflxyU5K"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#1668 …}
    +apId: "Saigonauticon@voltage.vn"
    +apProfileId: "https://voltage.vn/u/Saigonauticon"
    +apPublicUrl: "https://voltage.vn/u/Saigonauticon"
    +apFollowersUrl: null
    +apInboxUrl: "https://voltage.vn/inbox"
    +apDomain: "voltage.vn"
    +apPreferredUsername: "Saigonauticon"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: false
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1709584336 {#1537
      date: 2024-03-04 21:32:16.0 +01:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1686890246 {#1515
      date: 2023-06-16 06:37:26.0 +02:00
    }
    +__isInitialized__: true
     …2
  }
  +asLink: true
}
vote App\Twig\Components\VoteComponent 12.0 MiB 0.40 ms
Input props 
[
  "subject" => App\Entity\EntryComment {#4278
    +user: Proxies\__CG__\App\Entity\User {#1943
      +avatar: null
      +cover: null
      +email: "Saigonauticon@voltage.vn"
      +username: "@Saigonauticon@voltage.vn"
      +roles: []
      +followersCount: 0
      +homepage: "front"
      +about: null
      +lastActive: DateTime @1703981706 {#1516
        date: 2023-12-31 01:15:06.0 +01:00
      }
      +markedForDeletionAt: null
      +fields: null
      +oauthGithubId: null
      +oauthGoogleId: null
      +oauthFacebookId: null
      +oauthKeycloakId: null
      +hideAdult: true
      +showSubscribedUsers: true
      +showSubscribedMagazines: true
      +showSubscribedDomains: true
      +preferredLanguages: []
      +featuredMagazines: null
      +showProfileSubscriptions: true
      +showProfileFollowings: true
      +markNewComments: false
      +notifyOnNewEntry: false
      +notifyOnNewEntryReply: false
      +notifyOnNewEntryCommentReply: false
      +notifyOnNewPost: false
      +notifyOnNewPostReply: false
      +notifyOnNewPostCommentReply: false
      +addMentionsEntries: false
      +addMentionsPosts: true
      +isBanned: false
      +isVerified: false
      +isDeleted: false
      +isBot: false
      +spamProtection: true
      +customCss: null
      +ignoreMagazinesCustomCss: false
      +moderatorTokens: Doctrine\ORM\PersistentCollection {#1632 …}
      +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#1406 …}
      +moderatorRequests: Doctrine\ORM\PersistentCollection {#1713 …}
      +entries: Doctrine\ORM\PersistentCollection {#1710 …}
      +entryVotes: Doctrine\ORM\PersistentCollection {#1742 …}
      +entryComments: Doctrine\ORM\PersistentCollection {#1659 …}
      +entryCommentVotes: Doctrine\ORM\PersistentCollection {#1470 …}
      +posts: Doctrine\ORM\PersistentCollection {#1746 …}
      +postVotes: Doctrine\ORM\PersistentCollection {#1490 …}
      +postComments: Doctrine\ORM\PersistentCollection {#1772 …}
      +postCommentVotes: Doctrine\ORM\PersistentCollection {#1622 …}
      +subscriptions: Doctrine\ORM\PersistentCollection {#1758 …}
      +subscribedDomains: Doctrine\ORM\PersistentCollection {#1450 …}
      +follows: Doctrine\ORM\PersistentCollection {#1422 …}
      +followers: Doctrine\ORM\PersistentCollection {#1660 …}
      +blocks: Doctrine\ORM\PersistentCollection {#1454 …}
      +blockers: Doctrine\ORM\PersistentCollection {#1425 …}
      +blockedMagazines: Doctrine\ORM\PersistentCollection {#1439 …}
      +blockedDomains: Doctrine\ORM\PersistentCollection {#1428 …}
      +reports: Doctrine\ORM\PersistentCollection {#1461 …}
      +favourites: Doctrine\ORM\PersistentCollection {#1438 …}
      +violations: Doctrine\ORM\PersistentCollection {#1697 …}
      +notifications: Doctrine\ORM\PersistentCollection {#1690 …}
      +awards: Doctrine\ORM\PersistentCollection {#1429 …}
      +subscribedCategories: Doctrine\ORM\PersistentCollection {#1612 …}
      +categories: Doctrine\ORM\PersistentCollection {#1675 …}
      -id: 269
      -password: "$2y$13$UYqaD7bZp4O.OwB02SlMIeKWP1aeHwuKf.UMqd1I/0STqvflxyU5K"
      -totpSecret: null
      -totpBackupCodes: []
      -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#1668 …}
      +apId: "Saigonauticon@voltage.vn"
      +apProfileId: "https://voltage.vn/u/Saigonauticon"
      +apPublicUrl: "https://voltage.vn/u/Saigonauticon"
      +apFollowersUrl: null
      +apInboxUrl: "https://voltage.vn/inbox"
      +apDomain: "voltage.vn"
      +apPreferredUsername: "Saigonauticon"
      +apDiscoverable: true
      +apManuallyApprovesFollowers: false
      +privateKey: null
      +publicKey: null
      +apFetchedAt: DateTime @1709584336 {#1537
        date: 2024-03-04 21:32:16.0 +01:00
      }
      +apDeletedAt: null
      +apTimeoutAt: null
      +visibility: "visible             "
      +createdAt: DateTimeImmutable @1686890246 {#1515
        date: 2023-06-16 06:37:26.0 +02:00
      }
      +__isInitialized__: true
       …2
    }
    +entry: App\Entity\Entry {#2388
      +user: Proxies\__CG__\App\Entity\User {#1943 …2}
      +magazine: App\Entity\Magazine {#266
        +icon: Proxies\__CG__\App\Entity\Image {#247 …}
        +name: "askelectronics@discuss.tchncs.de"
        +title: "askelectronics"
        +description: """
          **For questions about component-level electronic circuits, tools and equipment.**\n
          \n
          Rules\n
          -----\n
          \n
          1: Be nice.\n
          \n
          2: Be on-topic (eg: *Electronic*, not *electrical*).\n
          \n
          3: No commercial stuff, buying, selling or valuations.\n
          \n
          4: Be safe.\n
          \n
          ---
          """
        +rules: null
        +subscriptionsCount: 1
        +entryCount: 154
        +entryCommentCount: 1230
        +postCount: 1
        +postCommentCount: 4
        +isAdult: false
        +customCss: null
        +lastActive: DateTime @1729413608 {#276
          date: 2024-10-20 10:40:08.0 +02:00
        }
        +markedForDeletionAt: null
        +tags: null
        +moderators: Doctrine\ORM\PersistentCollection {#238 …}
        +ownershipRequests: Doctrine\ORM\PersistentCollection {#234 …}
        +moderatorRequests: Doctrine\ORM\PersistentCollection {#223 …}
        +entries: Doctrine\ORM\PersistentCollection {#181 …}
        +posts: Doctrine\ORM\PersistentCollection {#139 …}
        +subscriptions: Doctrine\ORM\PersistentCollection {#201 …}
        +bans: Doctrine\ORM\PersistentCollection {#118 …}
        +reports: Doctrine\ORM\PersistentCollection {#104 …}
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
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        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
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        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
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        Get a board with a TP5000. [Like this one here](https://www.aliexpress.com/item/1005004950011414.html).\n
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        Don’t charge LFP to 4.2 volt! The crude “check voltage and if below 3.6 V keep charging” is okay too as long as the maximum current is within battery spec. But measure while charging, don’t turn that off to measure the open circuit voltage.
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      An international parts order is too complex for such a small thing. I’m not in the USA or China. So no TP5000 for me, got to work with what I have.\n
      \n
      I agree, no charging at 4.2 volts. The current charger I built seems to work well enough. I ran some tests and it charges within spec. The reason I turn off the charger to measure cell voltage is because otherwise I’ll mainly be measuring SMPS noise.\n
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
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        Get a board with a TP5000. [Like this one here](https://www.aliexpress.com/item/1005004950011414.html).\n
        \n
        Don’t charge LFP to 4.2 volt! The crude “check voltage and if below 3.6 V keep charging” is okay too as long as the maximum current is within battery spec. But measure while charging, don’t turn that off to measure the open circuit voltage.
        """
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      An international parts order is too complex for such a small thing. I’m not in the USA or China. So no TP5000 for me, got to work with what I have.\n
      \n
      I agree, no charging at 4.2 volts. The current charger I built seems to work well enough. I ran some tests and it charges within spec. The reason I turn off the charger to measure cell voltage is because otherwise I’ll mainly be measuring SMPS noise.\n
      \n
      Anyway it beats the charger available in the local market, which is clearly unsafe, no matter how much they assure me that it’s ‘totally OK’.
      """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
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        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
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        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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        Get a board with a TP5000. [Like this one here](https://www.aliexpress.com/item/1005004950011414.html).\n
        \n
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      An international parts order is too complex for such a small thing. I’m not in the USA or China. So no TP5000 for me, got to work with what I have.\n
      \n
      I agree, no charging at 4.2 volts. The current charger I built seems to work well enough. I ran some tests and it charges within spec. The reason I turn off the charger to measure cell voltage is because otherwise I’ll mainly be measuring SMPS noise.\n
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      """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
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        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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        Get a board with a TP5000. [Like this one here](https://www.aliexpress.com/item/1005004950011414.html).\n
        \n
        Don’t charge LFP to 4.2 volt! The crude “check voltage and if below 3.6 V keep charging” is okay too as long as the maximum current is within battery spec. But measure while charging, don’t turn that off to measure the open circuit voltage.
        """
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      An international parts order is too complex for such a small thing. I’m not in the USA or China. So no TP5000 for me, got to work with what I have.\n
      \n
      I agree, no charging at 4.2 volts. The current charger I built seems to work well enough. I ran some tests and it charges within spec. The reason I turn off the charger to measure cell voltage is because otherwise I’ll mainly be measuring SMPS noise.\n
      \n
      Anyway it beats the charger available in the local market, which is clearly unsafe, no matter how much they assure me that it’s ‘totally OK’.
      """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
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        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
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        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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        Get a board with a TP5000. [Like this one here](https://www.aliexpress.com/item/1005004950011414.html).\n
        \n
        Don’t charge LFP to 4.2 volt! The crude “check voltage and if below 3.6 V keep charging” is okay too as long as the maximum current is within battery spec. But measure while charging, don’t turn that off to measure the open circuit voltage.
        """
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      An international parts order is too complex for such a small thing. I’m not in the USA or China. So no TP5000 for me, got to work with what I have.\n
      \n
      I agree, no charging at 4.2 volts. The current charger I built seems to work well enough. I ran some tests and it charges within spec. The reason I turn off the charger to measure cell voltage is because otherwise I’ll mainly be measuring SMPS noise.\n
      \n
      Anyway it beats the charger available in the local market, which is clearly unsafe, no matter how much they assure me that it’s ‘totally OK’.
      """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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        Get a board with a TP5000. [Like this one here](https://www.aliexpress.com/item/1005004950011414.html).\n
        \n
        Don’t charge LFP to 4.2 volt! The crude “check voltage and if below 3.6 V keep charging” is okay too as long as the maximum current is within battery spec. But measure while charging, don’t turn that off to measure the open circuit voltage.
        """
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      An international parts order is too complex for such a small thing. I’m not in the USA or China. So no TP5000 for me, got to work with what I have.\n
      \n
      I agree, no charging at 4.2 volts. The current charger I built seems to work well enough. I ran some tests and it charges within spec. The reason I turn off the charger to measure cell voltage is because otherwise I’ll mainly be measuring SMPS noise.\n
      \n
      Anyway it beats the charger available in the local market, which is clearly unsafe, no matter how much they assure me that it’s ‘totally OK’.
      """
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entry_comment App\Twig\Components\EntryCommentComponent 12.0 MiB 7.72 ms
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
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        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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          Get a board with a TP5000. [Like this one here](https://www.aliexpress.com/item/1005004950011414.html).\n
          \n
          Don’t charge LFP to 4.2 volt! The crude “check voltage and if below 3.6 V keep charging” is okay too as long as the maximum current is within battery spec. But measure while charging, don’t turn that off to measure the open circuit voltage.
          """
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        An international parts order is too complex for such a small thing. I’m not in the USA or China. So no TP5000 for me, got to work with what I have.\n
        \n
        I agree, no charging at 4.2 volts. The current charger I built seems to work well enough. I ran some tests and it charges within spec. The reason I turn off the charger to measure cell voltage is because otherwise I’ll mainly be measuring SMPS noise.\n
        \n
        Anyway it beats the charger available in the local market, which is clearly unsafe, no matter how much they assure me that it’s ‘totally OK’.
        """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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        +parent: null
        +root: null
        +body: """
          Get a board with a TP5000. [Like this one here](https://www.aliexpress.com/item/1005004950011414.html).\n
          \n
          Don’t charge LFP to 4.2 volt! The crude “check voltage and if below 3.6 V keep charging” is okay too as long as the maximum current is within battery spec. But measure while charging, don’t turn that off to measure the open circuit voltage.
          """
        +lang: "en"
        +isAdult: false
        +favouriteCount: 0
        +score: 0
        +lastActive: DateTime @1704105980 {#4041
          date: 2024-01-01 11:46:20.0 +01:00
        }
        +ip: null
        +tags: null
        +mentions: [
          "@Saigonauticon@voltage.vn"
        ]
        +children: Doctrine\ORM\PersistentCollection {#4030 …}
        +nested: Doctrine\ORM\PersistentCollection {#4028 …}
        +votes: Doctrine\ORM\PersistentCollection {#4026 …}
        +reports: Doctrine\ORM\PersistentCollection {#4024 …}
        +favourites: Doctrine\ORM\PersistentCollection {#3992 …}
        +notifications: Doctrine\ORM\PersistentCollection {#3996 …}
        -id: 215007
        -bodyTs: "'/item/1005004950011414.html).':13 '3.6':28 '4.2':19 'batteri':43 'board':3 'charg':16,31,48 'check':23 'circuit':58 'crude':22 'current':40 'get':1 'keep':30 'lfp':17 'like':7 'long':36 'maximum':39 'measur':46,55 'okay':33 'one':9 'open':57 'spec':44 'tp5000':6 'turn':51 'v':29 'volt':20 'voltag':24,59 'within':42 'www.aliexpress.com':12 'www.aliexpress.com/item/1005004950011414.html).':11"
        +ranking: 0
        +commentCount: 0
        +upVotes: 0
        +downVotes: 0
        +visibility: "visible             "
        +apId: "https://lemmy.world/comment/5927879"
        +editedAt: null
        +createdAt: DateTimeImmutable @1702158537 {#3977
          date: 2023-12-09 22:48:57.0 +01:00
        }
      }
      +root: App\Entity\EntryComment {#4032}
      +body: """
        An international parts order is too complex for such a small thing. I’m not in the USA or China. So no TP5000 for me, got to work with what I have.\n
        \n
        I agree, no charging at 4.2 volts. The current charger I built seems to work well enough. I ran some tests and it charges within spec. The reason I turn off the charger to measure cell voltage is because otherwise I’ll mainly be measuring SMPS noise.\n
        \n
        Anyway it beats the charger available in the local market, which is clearly unsafe, no matter how much they assure me that it’s ‘totally OK’.
        """
      +lang: "en"
      +isAdult: false
      +favouriteCount: 1
      +score: 0
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        date: 2023-12-12 09:18:16.0 +01:00
      }
      +ip: null
      +tags: null
      +mentions: [
        "@Saigonauticon@voltage.vn"
        "@Eheran@lemmy.world"
      ]
      +children: Doctrine\ORM\PersistentCollection {#4279 …}
      +nested: Doctrine\ORM\PersistentCollection {#4281 …}
      +votes: Doctrine\ORM\PersistentCollection {#4283 …}
      +reports: Doctrine\ORM\PersistentCollection {#4285 …}
      +favourites: Doctrine\ORM\PersistentCollection {#4287 …}
      +notifications: Doctrine\ORM\PersistentCollection {#4289 …}
      -id: 217830
      -bodyTs: "'4.2':38 'agre':34 'anyway':80 'assur':99 'avail':85 'beat':82 'built':44 'cell':68 'charg':36,56 'charger':42,65,84 'china':20 'clear':92 'complex':7 'current':41 'enough':49 'got':26 'intern':2 'll':74 'local':88 'm':14 'main':75 'market':89 'matter':95 'measur':67,77 'much':97 'nois':79 'ok':105 'order':4 'otherwis':72 'part':3 'ran':51 'reason':60 'seem':45 'small':11 'smps':78 'spec':58 'test':53 'thing':12 'total':104 'tp5000':23 'turn':62 'unsaf':93 'usa':18 'volt':39 'voltag':69 'well':48 'within':57 'work':28,47"
      +ranking: 0
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      +visibility: "visible             "
      +apId: "https://voltage.vn/comment/371826"
      +editedAt: null
      +createdAt: DateTimeImmutable @1702369096 {#4277
        date: 2023-12-12 09:18:16.0 +01:00
      }
    }
    +root: App\Entity\EntryComment {#4032}
    +body: "Perfect."
    +lang: "en"
    +isAdult: false
    +favouriteCount: 0
    +score: 0
    +lastActive: DateTime @1702410534 {#4360
      date: 2023-12-12 20:48:54.0 +01:00
    }
    +ip: null
    +tags: null
    +mentions: [
      "@Saigonauticon@voltage.vn"
      "@Eheran@lemmy.world"
    ]
    +children: Doctrine\ORM\PersistentCollection {#4363 …}
    +nested: Doctrine\ORM\PersistentCollection {#4365 …}
    +votes: Doctrine\ORM\PersistentCollection {#4367 …}
    +reports: Doctrine\ORM\PersistentCollection {#4369 …}
    +favourites: Doctrine\ORM\PersistentCollection {#4371 …}
    +notifications: Doctrine\ORM\PersistentCollection {#4373 …}
    -id: 219100
    -bodyTs: "'perfect':1"
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    +createdAt: DateTimeImmutable @1702410534 {#4361
      date: 2023-12-12 20:48:54.0 +01:00
    }
  }
  +showMagazineName: false
  +showEntryTitle: false
  +showNested: true
  +level: 3
  +canSeeTrash: false
  +dateAsUrl: false
  -requestStack: Symfony\Component\HttpFoundation\RequestStack {#1328 …}
  -authorizationChecker: Symfony\Component\Security\Core\Authorization\AuthorizationChecker {#931 …}
}
user_inline App\Twig\Components\UserInlineComponent 12.0 MiB 0.14 ms
Input props 
[
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    +avatar: null
    +cover: null
    +email: "Eheran@lemmy.world"
    +username: "@Eheran@lemmy.world"
    +roles: []
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    +markedForDeletionAt: null
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    +customCss: null
    +ignoreMagazinesCustomCss: false
    +moderatorTokens: Doctrine\ORM\PersistentCollection {#3981 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#3984 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#3976 …}
    +entries: Doctrine\ORM\PersistentCollection {#3974 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#3972 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#3969 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#3967 …}
    +posts: Doctrine\ORM\PersistentCollection {#3964 …}
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    +blockers: Doctrine\ORM\PersistentCollection {#4072 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#4061 …}
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    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#4076 …}
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  "showAvatar" => false
]
Attributes 
[]
Component 
App\Twig\Components\UserInlineComponent {#5812
  +user: App\Entity\User {#3980
    +avatar: null
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    +email: "Eheran@lemmy.world"
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    +markedForDeletionAt: null
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    +isBot: false
    +spamProtection: true
    +customCss: null
    +ignoreMagazinesCustomCss: false
    +moderatorTokens: Doctrine\ORM\PersistentCollection {#3981 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#3984 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#3976 …}
    +entries: Doctrine\ORM\PersistentCollection {#3974 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#3972 …}
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      date: 2023-07-27 21:32:36.0 +02:00
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}
date App\Twig\Components\DateComponent 12.0 MiB 0.13 ms
Input props 
[
  "date" => DateTimeImmutable @1702410534 {#4361
    date: 2023-12-12 20:48:54.0 +01:00
  }
]
Attributes 
[]
Component 
App\Twig\Components\DateComponent {#5867
  +date: DateTimeImmutable @1702410534 {#4361
    date: 2023-12-12 20:48:54.0 +01:00
  }
}
date_edited App\Twig\Components\DateEditedComponent 12.0 MiB 0.09 ms
Input props 
[
  "createdAt" => DateTimeImmutable @1702410534 {#4361
    date: 2023-12-12 20:48:54.0 +01:00
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  "editedAt" => null
]
Attributes 
[]
Component 
App\Twig\Components\DateEditedComponent {#5921
  +createdAt: DateTimeImmutable @1702410534 {#4361
    date: 2023-12-12 20:48:54.0 +01:00
  }
  +editedAt: null
}
user_avatar App\Twig\Components\UserAvatarComponent 12.0 MiB 0.16 ms
Input props 
[
  "user" => App\Entity\User {#3980
    +avatar: null
    +cover: null
    +email: "Eheran@lemmy.world"
    +username: "@Eheran@lemmy.world"
    +roles: []
    +followersCount: 0
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    +customCss: null
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    +moderatorTokens: Doctrine\ORM\PersistentCollection {#3981 …}
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    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#4076 …}
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      date: 2023-07-27 21:32:36.0 +02:00
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  "width" => 40
  "height" => 40
  "asLink" => true
]
Attributes 
[]
Component 
App\Twig\Components\UserAvatarComponent {#5975
  +width: 40
  +height: 40
  +user: App\Entity\User {#3980
    +avatar: null
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    +email: "Eheran@lemmy.world"
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      date: 2024-09-19 12:20:49.0 +02:00
    }
    +markedForDeletionAt: null
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    +moderatorTokens: Doctrine\ORM\PersistentCollection {#3981 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#3984 …}
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    +entries: Doctrine\ORM\PersistentCollection {#3974 …}
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      date: 2023-07-27 21:32:36.0 +02:00
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  +asLink: true
}
vote App\Twig\Components\VoteComponent 12.0 MiB 0.47 ms
Input props 
[
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    +user: App\Entity\User {#3980
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      +email: "Eheran@lemmy.world"
      +username: "@Eheran@lemmy.world"
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          **For questions about component-level electronic circuits, tools and equipment.**\n
          \n
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      +slug: "Sanity-check-for-LiFePO4-Charger-Design"
      +title: "Sanity check for LiFePO4 Charger Design"
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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          Get a board with a TP5000. [Like this one here](https://www.aliexpress.com/item/1005004950011414.html).\n
          \n
          Don’t charge LFP to 4.2 volt! The crude “check voltage and if below 3.6 V keep charging” is okay too as long as the maximum current is within battery spec. But measure while charging, don’t turn that off to measure the open circuit voltage.
          """
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        An international parts order is too complex for such a small thing. I’m not in the USA or China. So no TP5000 for me, got to work with what I have.\n
        \n
        I agree, no charging at 4.2 volts. The current charger I built seems to work well enough. I ran some tests and it charges within spec. The reason I turn off the charger to measure cell voltage is because otherwise I’ll mainly be measuring SMPS noise.\n
        \n
        Anyway it beats the charger available in the local market, which is clearly unsafe, no matter how much they assure me that it’s ‘totally OK’.
        """
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      +slug: "Sanity-check-for-LiFePO4-Charger-Design"
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
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        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
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        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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          Get a board with a TP5000. [Like this one here](https://www.aliexpress.com/item/1005004950011414.html).\n
          \n
          Don’t charge LFP to 4.2 volt! The crude “check voltage and if below 3.6 V keep charging” is okay too as long as the maximum current is within battery spec. But measure while charging, don’t turn that off to measure the open circuit voltage.
          """
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        An international parts order is too complex for such a small thing. I’m not in the USA or China. So no TP5000 for me, got to work with what I have.\n
        \n
        I agree, no charging at 4.2 volts. The current charger I built seems to work well enough. I ran some tests and it charges within spec. The reason I turn off the charger to measure cell voltage is because otherwise I’ll mainly be measuring SMPS noise.\n
        \n
        Anyway it beats the charger available in the local market, which is clearly unsafe, no matter how much they assure me that it’s ‘totally OK’.
        """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
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        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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          Get a board with a TP5000. [Like this one here](https://www.aliexpress.com/item/1005004950011414.html).\n
          \n
          Don’t charge LFP to 4.2 volt! The crude “check voltage and if below 3.6 V keep charging” is okay too as long as the maximum current is within battery spec. But measure while charging, don’t turn that off to measure the open circuit voltage.
          """
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        An international parts order is too complex for such a small thing. I’m not in the USA or China. So no TP5000 for me, got to work with what I have.\n
        \n
        I agree, no charging at 4.2 volts. The current charger I built seems to work well enough. I ran some tests and it charges within spec. The reason I turn off the charger to measure cell voltage is because otherwise I’ll mainly be measuring SMPS noise.\n
        \n
        Anyway it beats the charger available in the local market, which is clearly unsafe, no matter how much they assure me that it’s ‘totally OK’.
        """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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          Get a board with a TP5000. [Like this one here](https://www.aliexpress.com/item/1005004950011414.html).\n
          \n
          Don’t charge LFP to 4.2 volt! The crude “check voltage and if below 3.6 V keep charging” is okay too as long as the maximum current is within battery spec. But measure while charging, don’t turn that off to measure the open circuit voltage.
          """
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        An international parts order is too complex for such a small thing. I’m not in the USA or China. So no TP5000 for me, got to work with what I have.\n
        \n
        I agree, no charging at 4.2 volts. The current charger I built seems to work well enough. I ran some tests and it charges within spec. The reason I turn off the charger to measure cell voltage is because otherwise I’ll mainly be measuring SMPS noise.\n
        \n
        Anyway it beats the charger available in the local market, which is clearly unsafe, no matter how much they assure me that it’s ‘totally OK’.
        """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
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        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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          Get a board with a TP5000. [Like this one here](https://www.aliexpress.com/item/1005004950011414.html).\n
          \n
          Don’t charge LFP to 4.2 volt! The crude “check voltage and if below 3.6 V keep charging” is okay too as long as the maximum current is within battery spec. But measure while charging, don’t turn that off to measure the open circuit voltage.
          """
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        An international parts order is too complex for such a small thing. I’m not in the USA or China. So no TP5000 for me, got to work with what I have.\n
        \n
        I agree, no charging at 4.2 volts. The current charger I built seems to work well enough. I ran some tests and it charges within spec. The reason I turn off the charger to measure cell voltage is because otherwise I’ll mainly be measuring SMPS noise.\n
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        Anyway it beats the charger available in the local market, which is clearly unsafe, no matter how much they assure me that it’s ‘totally OK’.
        """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
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        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
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        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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          Get a board with a TP5000. [Like this one here](https://www.aliexpress.com/item/1005004950011414.html).\n
          \n
          Don’t charge LFP to 4.2 volt! The crude “check voltage and if below 3.6 V keep charging” is okay too as long as the maximum current is within battery spec. But measure while charging, don’t turn that off to measure the open circuit voltage.
          """
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        An international parts order is too complex for such a small thing. I’m not in the USA or China. So no TP5000 for me, got to work with what I have.\n
        \n
        I agree, no charging at 4.2 volts. The current charger I built seems to work well enough. I ran some tests and it charges within spec. The reason I turn off the charger to measure cell voltage is because otherwise I’ll mainly be measuring SMPS noise.\n
        \n
        Anyway it beats the charger available in the local market, which is clearly unsafe, no matter how much they assure me that it’s ‘totally OK’.
        """
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      +slug: "Sanity-check-for-LiFePO4-Charger-Design"
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
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        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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      Take a look at [Battery University](https://batteryuniversity.com/article/bu-206-lithium-polymer-substance-or-hype), I think it’s a great resource.\n
      \n
      On the topic of lithium polymer charging, it has this to say:\n
      \n
      > Charge and discharge characteristics of Li-polymer are identical to other Li-ion systems and do not require a dedicated charger. Safety issues are also similar in that protection circuits are needed. Gas buildup during charge can cause some prismatic and pouch cells to swell, and equipment manufacturers must make allowances for expansion. Li-polymer in a foil package may be less durable than Li-ion in the cylindrical package.
      """
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          \n
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          \n
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          \n
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      +slug: "Sanity-check-for-LiFePO4-Charger-Design"
      +title: "Sanity check for LiFePO4 Charger Design"
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      +body: """
        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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      Take a look at [Battery University](https://batteryuniversity.com/article/bu-206-lithium-polymer-substance-or-hype), I think it’s a great resource.\n
      \n
      On the topic of lithium polymer charging, it has this to say:\n
      \n
      > Charge and discharge characteristics of Li-polymer are identical to other Li-ion systems and do not require a dedicated charger. Safety issues are also similar in that protection circuits are needed. Gas buildup during charge can cause some prismatic and pouch cells to swell, and equipment manufacturers must make allowances for expansion. Li-polymer in a foil package may be less durable than Li-ion in the cylindrical package.
      """
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vote App\Twig\Components\VoteComponent 12.0 MiB 0.35 ms
Input props 
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         …2
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          **For questions about component-level electronic circuits, tools and equipment.**\n
          \n
          Rules\n
          -----\n
          \n
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          \n
          2: Be on-topic (eg: *Electronic*, not *electrical*).\n
          \n
          3: No commercial stuff, buying, selling or valuations.\n
          \n
          4: Be safe.\n
          \n
          ---
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      +slug: "Sanity-check-for-LiFePO4-Charger-Design"
      +title: "Sanity check for LiFePO4 Charger Design"
      +url: null
      +body: """
        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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    +body: """
      Take a look at [Battery University](https://batteryuniversity.com/article/bu-206-lithium-polymer-substance-or-hype), I think it’s a great resource.\n
      \n
      On the topic of lithium polymer charging, it has this to say:\n
      \n
      > Charge and discharge characteristics of Li-polymer are identical to other Li-ion systems and do not require a dedicated charger. Safety issues are also similar in that protection circuits are needed. Gas buildup during charge can cause some prismatic and pouch cells to swell, and equipment manufacturers must make allowances for expansion. Li-polymer in a foil package may be less durable than Li-ion in the cylindrical package.
      """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
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        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
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        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
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        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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      Take a look at [Battery University](https://batteryuniversity.com/article/bu-206-lithium-polymer-substance-or-hype), I think it’s a great resource.\n
      \n
      On the topic of lithium polymer charging, it has this to say:\n
      \n
      > Charge and discharge characteristics of Li-polymer are identical to other Li-ion systems and do not require a dedicated charger. Safety issues are also similar in that protection circuits are needed. Gas buildup during charge can cause some prismatic and pouch cells to swell, and equipment manufacturers must make allowances for expansion. Li-polymer in a foil package may be less durable than Li-ion in the cylindrical package.
      """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
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      Take a look at [Battery University](https://batteryuniversity.com/article/bu-206-lithium-polymer-substance-or-hype), I think it’s a great resource.\n
      \n
      On the topic of lithium polymer charging, it has this to say:\n
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      """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
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        \n
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        \n
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
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        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
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        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
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        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
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        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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      Take a look at [Battery University](https://batteryuniversity.com/article/bu-206-lithium-polymer-substance-or-hype), I think it’s a great resource.\n
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      +slug: "Sanity-check-for-LiFePO4-Charger-Design"
      +title: "Sanity check for LiFePO4 Charger Design"
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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      Take a look at [Battery University](https://batteryuniversity.com/article/bu-206-lithium-polymer-substance-or-hype), I think it’s a great resource.\n
      \n
      On the topic of lithium polymer charging, it has this to say:\n
      \n
      > Charge and discharge characteristics of Li-polymer are identical to other Li-ion systems and do not require a dedicated charger. Safety issues are also similar in that protection circuits are needed. Gas buildup during charge can cause some prismatic and pouch cells to swell, and equipment manufacturers must make allowances for expansion. Li-polymer in a foil package may be less durable than Li-ion in the cylindrical package.
      """
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    187401 => App\Entity\EntryComment {#4347
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        +body: """
          Battery University is indeed a great resource!\n
          \n
          However this is not a lithium polymer battery, and as it’s a 32700, it is not a prismatic or pouch cell either. It is a lithium iron phosphate (LiFePO4) cylindrical battery in metal housing. Battery University does have them listed in their table of chemistries (in case you’re curious), but they don’t seem to have much detailed information. Enough to build a charger though :)\n
          \n
          [batteryuniversity.com/…/bu-216-summary-table-of-l…](https://batteryuniversity.com/article/bu-216-summary-table-of-lithium-based-batteries)\n
          \n
          Also some more detailed information here:\n
          \n
          [batteryuniversity.com/…/bu-205-types-of-lithium-i…](https://batteryuniversity.com/article/bu-205-types-of-lithium-ion)\n
          \n
          Anyway, thanks for your reference in any case! I’m not responding to criticize you, only to improve the utility of this conversation in case someone else finds it on search :)
          """
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      +body: "Oh my bad. I’m no battery expert by a long shot; just meant to contribute a good source of information. But you’re way ahead of me anyway. Carry on! 😊"
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
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        Take a look at [Battery University](https://batteryuniversity.com/article/bu-206-lithium-polymer-substance-or-hype), I think it’s a great resource.\n
        \n
        On the topic of lithium polymer charging, it has this to say:\n
        \n
        > Charge and discharge characteristics of Li-polymer are identical to other Li-ion systems and do not require a dedicated charger. Safety issues are also similar in that protection circuits are needed. Gas buildup during charge can cause some prismatic and pouch cells to swell, and equipment manufacturers must make allowances for expansion. Li-polymer in a foil package may be less durable than Li-ion in the cylindrical package.
        """
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      Battery University is indeed a great resource!\n
      \n
      However this is not a lithium polymer battery, and as it’s a 32700, it is not a prismatic or pouch cell either. It is a lithium iron phosphate (LiFePO4) cylindrical battery in metal housing. Battery University does have them listed in their table of chemistries (in case you’re curious), but they don’t seem to have much detailed information. Enough to build a charger though :)\n
      \n
      [batteryuniversity.com/…/bu-216-summary-table-of-l…](https://batteryuniversity.com/article/bu-216-summary-table-of-lithium-based-batteries)\n
      \n
      Also some more detailed information here:\n
      \n
      [batteryuniversity.com/…/bu-205-types-of-lithium-i…](https://batteryuniversity.com/article/bu-205-types-of-lithium-ion)\n
      \n
      Anyway, thanks for your reference in any case! I’m not responding to criticize you, only to improve the utility of this conversation in case someone else finds it on search :)
      """
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      +body: """
        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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      +body: """
        Take a look at [Battery University](https://batteryuniversity.com/article/bu-206-lithium-polymer-substance-or-hype), I think it’s a great resource.\n
        \n
        On the topic of lithium polymer charging, it has this to say:\n
        \n
        > Charge and discharge characteristics of Li-polymer are identical to other Li-ion systems and do not require a dedicated charger. Safety issues are also similar in that protection circuits are needed. Gas buildup during charge can cause some prismatic and pouch cells to swell, and equipment manufacturers must make allowances for expansion. Li-polymer in a foil package may be less durable than Li-ion in the cylindrical package.
        """
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      Battery University is indeed a great resource!\n
      \n
      However this is not a lithium polymer battery, and as it’s a 32700, it is not a prismatic or pouch cell either. It is a lithium iron phosphate (LiFePO4) cylindrical battery in metal housing. Battery University does have them listed in their table of chemistries (in case you’re curious), but they don’t seem to have much detailed information. Enough to build a charger though :)\n
      \n
      [batteryuniversity.com/…/bu-216-summary-table-of-l…](https://batteryuniversity.com/article/bu-216-summary-table-of-lithium-based-batteries)\n
      \n
      Also some more detailed information here:\n
      \n
      [batteryuniversity.com/…/bu-205-types-of-lithium-i…](https://batteryuniversity.com/article/bu-205-types-of-lithium-ion)\n
      \n
      Anyway, thanks for your reference in any case! I’m not responding to criticize you, only to improve the utility of this conversation in case someone else finds it on search :)
      """
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Input props 
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          \n
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          \n
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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      +body: """
        Take a look at [Battery University](https://batteryuniversity.com/article/bu-206-lithium-polymer-substance-or-hype), I think it’s a great resource.\n
        \n
        On the topic of lithium polymer charging, it has this to say:\n
        \n
        > Charge and discharge characteristics of Li-polymer are identical to other Li-ion systems and do not require a dedicated charger. Safety issues are also similar in that protection circuits are needed. Gas buildup during charge can cause some prismatic and pouch cells to swell, and equipment manufacturers must make allowances for expansion. Li-polymer in a foil package may be less durable than Li-ion in the cylindrical package.
        """
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      Battery University is indeed a great resource!\n
      \n
      However this is not a lithium polymer battery, and as it’s a 32700, it is not a prismatic or pouch cell either. It is a lithium iron phosphate (LiFePO4) cylindrical battery in metal housing. Battery University does have them listed in their table of chemistries (in case you’re curious), but they don’t seem to have much detailed information. Enough to build a charger though :)\n
      \n
      [batteryuniversity.com/…/bu-216-summary-table-of-l…](https://batteryuniversity.com/article/bu-216-summary-table-of-lithium-based-batteries)\n
      \n
      Also some more detailed information here:\n
      \n
      [batteryuniversity.com/…/bu-205-types-of-lithium-i…](https://batteryuniversity.com/article/bu-205-types-of-lithium-ion)\n
      \n
      Anyway, thanks for your reference in any case! I’m not responding to criticize you, only to improve the utility of this conversation in case someone else finds it on search :)
      """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
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        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
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        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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        Take a look at [Battery University](https://batteryuniversity.com/article/bu-206-lithium-polymer-substance-or-hype), I think it’s a great resource.\n
        \n
        On the topic of lithium polymer charging, it has this to say:\n
        \n
        > Charge and discharge characteristics of Li-polymer are identical to other Li-ion systems and do not require a dedicated charger. Safety issues are also similar in that protection circuits are needed. Gas buildup during charge can cause some prismatic and pouch cells to swell, and equipment manufacturers must make allowances for expansion. Li-polymer in a foil package may be less durable than Li-ion in the cylindrical package.
        """
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      Battery University is indeed a great resource!\n
      \n
      However this is not a lithium polymer battery, and as it’s a 32700, it is not a prismatic or pouch cell either. It is a lithium iron phosphate (LiFePO4) cylindrical battery in metal housing. Battery University does have them listed in their table of chemistries (in case you’re curious), but they don’t seem to have much detailed information. Enough to build a charger though :)\n
      \n
      [batteryuniversity.com/…/bu-216-summary-table-of-l…](https://batteryuniversity.com/article/bu-216-summary-table-of-lithium-based-batteries)\n
      \n
      Also some more detailed information here:\n
      \n
      [batteryuniversity.com/…/bu-205-types-of-lithium-i…](https://batteryuniversity.com/article/bu-205-types-of-lithium-ion)\n
      \n
      Anyway, thanks for your reference in any case! I’m not responding to criticize you, only to improve the utility of this conversation in case someone else finds it on search :)
      """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
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        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
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        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
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        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
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        Take a look at [Battery University](https://batteryuniversity.com/article/bu-206-lithium-polymer-substance-or-hype), I think it’s a great resource.\n
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        On the topic of lithium polymer charging, it has this to say:\n
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        > Charge and discharge characteristics of Li-polymer are identical to other Li-ion systems and do not require a dedicated charger. Safety issues are also similar in that protection circuits are needed. Gas buildup during charge can cause some prismatic and pouch cells to swell, and equipment manufacturers must make allowances for expansion. Li-polymer in a foil package may be less durable than Li-ion in the cylindrical package.
        """
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      Battery University is indeed a great resource!\n
      \n
      However this is not a lithium polymer battery, and as it’s a 32700, it is not a prismatic or pouch cell either. It is a lithium iron phosphate (LiFePO4) cylindrical battery in metal housing. Battery University does have them listed in their table of chemistries (in case you’re curious), but they don’t seem to have much detailed information. Enough to build a charger though :)\n
      \n
      [batteryuniversity.com/…/bu-216-summary-table-of-l…](https://batteryuniversity.com/article/bu-216-summary-table-of-lithium-based-batteries)\n
      \n
      Also some more detailed information here:\n
      \n
      [batteryuniversity.com/…/bu-205-types-of-lithium-i…](https://batteryuniversity.com/article/bu-205-types-of-lithium-ion)\n
      \n
      Anyway, thanks for your reference in any case! I’m not responding to criticize you, only to improve the utility of this conversation in case someone else finds it on search :)
      """
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      +slug: "Sanity-check-for-LiFePO4-Charger-Design"
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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        Take a look at [Battery University](https://batteryuniversity.com/article/bu-206-lithium-polymer-substance-or-hype), I think it’s a great resource.\n
        \n
        On the topic of lithium polymer charging, it has this to say:\n
        \n
        > Charge and discharge characteristics of Li-polymer are identical to other Li-ion systems and do not require a dedicated charger. Safety issues are also similar in that protection circuits are needed. Gas buildup during charge can cause some prismatic and pouch cells to swell, and equipment manufacturers must make allowances for expansion. Li-polymer in a foil package may be less durable than Li-ion in the cylindrical package.
        """
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      Battery University is indeed a great resource!\n
      \n
      However this is not a lithium polymer battery, and as it’s a 32700, it is not a prismatic or pouch cell either. It is a lithium iron phosphate (LiFePO4) cylindrical battery in metal housing. Battery University does have them listed in their table of chemistries (in case you’re curious), but they don’t seem to have much detailed information. Enough to build a charger though :)\n
      \n
      [batteryuniversity.com/…/bu-216-summary-table-of-l…](https://batteryuniversity.com/article/bu-216-summary-table-of-lithium-based-batteries)\n
      \n
      Also some more detailed information here:\n
      \n
      [batteryuniversity.com/…/bu-205-types-of-lithium-i…](https://batteryuniversity.com/article/bu-205-types-of-lithium-ion)\n
      \n
      Anyway, thanks for your reference in any case! I’m not responding to criticize you, only to improve the utility of this conversation in case someone else finds it on search :)
      """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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        Take a look at [Battery University](https://batteryuniversity.com/article/bu-206-lithium-polymer-substance-or-hype), I think it’s a great resource.\n
        \n
        On the topic of lithium polymer charging, it has this to say:\n
        \n
        > Charge and discharge characteristics of Li-polymer are identical to other Li-ion systems and do not require a dedicated charger. Safety issues are also similar in that protection circuits are needed. Gas buildup during charge can cause some prismatic and pouch cells to swell, and equipment manufacturers must make allowances for expansion. Li-polymer in a foil package may be less durable than Li-ion in the cylindrical package.
        """
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      Battery University is indeed a great resource!\n
      \n
      However this is not a lithium polymer battery, and as it’s a 32700, it is not a prismatic or pouch cell either. It is a lithium iron phosphate (LiFePO4) cylindrical battery in metal housing. Battery University does have them listed in their table of chemistries (in case you’re curious), but they don’t seem to have much detailed information. Enough to build a charger though :)\n
      \n
      [batteryuniversity.com/…/bu-216-summary-table-of-l…](https://batteryuniversity.com/article/bu-216-summary-table-of-lithium-based-batteries)\n
      \n
      Also some more detailed information here:\n
      \n
      [batteryuniversity.com/…/bu-205-types-of-lithium-i…](https://batteryuniversity.com/article/bu-205-types-of-lithium-ion)\n
      \n
      Anyway, thanks for your reference in any case! I’m not responding to criticize you, only to improve the utility of this conversation in case someone else finds it on search :)
      """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
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        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
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        Take a look at [Battery University](https://batteryuniversity.com/article/bu-206-lithium-polymer-substance-or-hype), I think it’s a great resource.\n
        \n
        On the topic of lithium polymer charging, it has this to say:\n
        \n
        > Charge and discharge characteristics of Li-polymer are identical to other Li-ion systems and do not require a dedicated charger. Safety issues are also similar in that protection circuits are needed. Gas buildup during charge can cause some prismatic and pouch cells to swell, and equipment manufacturers must make allowances for expansion. Li-polymer in a foil package may be less durable than Li-ion in the cylindrical package.
        """
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      Battery University is indeed a great resource!\n
      \n
      However this is not a lithium polymer battery, and as it’s a 32700, it is not a prismatic or pouch cell either. It is a lithium iron phosphate (LiFePO4) cylindrical battery in metal housing. Battery University does have them listed in their table of chemistries (in case you’re curious), but they don’t seem to have much detailed information. Enough to build a charger though :)\n
      \n
      [batteryuniversity.com/…/bu-216-summary-table-of-l…](https://batteryuniversity.com/article/bu-216-summary-table-of-lithium-based-batteries)\n
      \n
      Also some more detailed information here:\n
      \n
      [batteryuniversity.com/…/bu-205-types-of-lithium-i…](https://batteryuniversity.com/article/bu-205-types-of-lithium-ion)\n
      \n
      Anyway, thanks for your reference in any case! I’m not responding to criticize you, only to improve the utility of this conversation in case someone else finds it on search :)
      """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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          Take a look at [Battery University](https://batteryuniversity.com/article/bu-206-lithium-polymer-substance-or-hype), I think it’s a great resource.\n
          \n
          On the topic of lithium polymer charging, it has this to say:\n
          \n
          > Charge and discharge characteristics of Li-polymer are identical to other Li-ion systems and do not require a dedicated charger. Safety issues are also similar in that protection circuits are needed. Gas buildup during charge can cause some prismatic and pouch cells to swell, and equipment manufacturers must make allowances for expansion. Li-polymer in a foil package may be less durable than Li-ion in the cylindrical package.
          """
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      +body: """
        Battery University is indeed a great resource!\n
        \n
        However this is not a lithium polymer battery, and as it’s a 32700, it is not a prismatic or pouch cell either. It is a lithium iron phosphate (LiFePO4) cylindrical battery in metal housing. Battery University does have them listed in their table of chemistries (in case you’re curious), but they don’t seem to have much detailed information. Enough to build a charger though :)\n
        \n
        [batteryuniversity.com/…/bu-216-summary-table-of-l…](https://batteryuniversity.com/article/bu-216-summary-table-of-lithium-based-batteries)\n
        \n
        Also some more detailed information here:\n
        \n
        [batteryuniversity.com/…/bu-205-types-of-lithium-i…](https://batteryuniversity.com/article/bu-205-types-of-lithium-ion)\n
        \n
        Anyway, thanks for your reference in any case! I’m not responding to criticize you, only to improve the utility of this conversation in case someone else finds it on search :)
        """
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    +body: "Oh my bad. I’m no battery expert by a long shot; just meant to contribute a good source of information. But you’re way ahead of me anyway. Carry on! 😊"
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      +slug: "Sanity-check-for-LiFePO4-Charger-Design"
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      +body: """
        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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          Take a look at [Battery University](https://batteryuniversity.com/article/bu-206-lithium-polymer-substance-or-hype), I think it’s a great resource.\n
          \n
          On the topic of lithium polymer charging, it has this to say:\n
          \n
          > Charge and discharge characteristics of Li-polymer are identical to other Li-ion systems and do not require a dedicated charger. Safety issues are also similar in that protection circuits are needed. Gas buildup during charge can cause some prismatic and pouch cells to swell, and equipment manufacturers must make allowances for expansion. Li-polymer in a foil package may be less durable than Li-ion in the cylindrical package.
          """
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        Battery University is indeed a great resource!\n
        \n
        However this is not a lithium polymer battery, and as it’s a 32700, it is not a prismatic or pouch cell either. It is a lithium iron phosphate (LiFePO4) cylindrical battery in metal housing. Battery University does have them listed in their table of chemistries (in case you’re curious), but they don’t seem to have much detailed information. Enough to build a charger though :)\n
        \n
        [batteryuniversity.com/…/bu-216-summary-table-of-l…](https://batteryuniversity.com/article/bu-216-summary-table-of-lithium-based-batteries)\n
        \n
        Also some more detailed information here:\n
        \n
        [batteryuniversity.com/…/bu-205-types-of-lithium-i…](https://batteryuniversity.com/article/bu-205-types-of-lithium-ion)\n
        \n
        Anyway, thanks for your reference in any case! I’m not responding to criticize you, only to improve the utility of this conversation in case someone else finds it on search :)
        """
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vote App\Twig\Components\VoteComponent 12.0 MiB 0.42 ms
Input props 
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      +slug: "Sanity-check-for-LiFePO4-Charger-Design"
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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        +body: """
          Take a look at [Battery University](https://batteryuniversity.com/article/bu-206-lithium-polymer-substance-or-hype), I think it’s a great resource.\n
          \n
          On the topic of lithium polymer charging, it has this to say:\n
          \n
          > Charge and discharge characteristics of Li-polymer are identical to other Li-ion systems and do not require a dedicated charger. Safety issues are also similar in that protection circuits are needed. Gas buildup during charge can cause some prismatic and pouch cells to swell, and equipment manufacturers must make allowances for expansion. Li-polymer in a foil package may be less durable than Li-ion in the cylindrical package.
          """
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      +body: """
        Battery University is indeed a great resource!\n
        \n
        However this is not a lithium polymer battery, and as it’s a 32700, it is not a prismatic or pouch cell either. It is a lithium iron phosphate (LiFePO4) cylindrical battery in metal housing. Battery University does have them listed in their table of chemistries (in case you’re curious), but they don’t seem to have much detailed information. Enough to build a charger though :)\n
        \n
        [batteryuniversity.com/…/bu-216-summary-table-of-l…](https://batteryuniversity.com/article/bu-216-summary-table-of-lithium-based-batteries)\n
        \n
        Also some more detailed information here:\n
        \n
        [batteryuniversity.com/…/bu-205-types-of-lithium-i…](https://batteryuniversity.com/article/bu-205-types-of-lithium-ion)\n
        \n
        Anyway, thanks for your reference in any case! I’m not responding to criticize you, only to improve the utility of this conversation in case someone else finds it on search :)
        """
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    +body: "Oh my bad. I’m no battery expert by a long shot; just meant to contribute a good source of information. But you’re way ahead of me anyway. Carry on! 😊"
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      +slug: "Sanity-check-for-LiFePO4-Charger-Design"
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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          Take a look at [Battery University](https://batteryuniversity.com/article/bu-206-lithium-polymer-substance-or-hype), I think it’s a great resource.\n
          \n
          On the topic of lithium polymer charging, it has this to say:\n
          \n
          > Charge and discharge characteristics of Li-polymer are identical to other Li-ion systems and do not require a dedicated charger. Safety issues are also similar in that protection circuits are needed. Gas buildup during charge can cause some prismatic and pouch cells to swell, and equipment manufacturers must make allowances for expansion. Li-polymer in a foil package may be less durable than Li-ion in the cylindrical package.
          """
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      +body: """
        Battery University is indeed a great resource!\n
        \n
        However this is not a lithium polymer battery, and as it’s a 32700, it is not a prismatic or pouch cell either. It is a lithium iron phosphate (LiFePO4) cylindrical battery in metal housing. Battery University does have them listed in their table of chemistries (in case you’re curious), but they don’t seem to have much detailed information. Enough to build a charger though :)\n
        \n
        [batteryuniversity.com/…/bu-216-summary-table-of-l…](https://batteryuniversity.com/article/bu-216-summary-table-of-lithium-based-batteries)\n
        \n
        Also some more detailed information here:\n
        \n
        [batteryuniversity.com/…/bu-205-types-of-lithium-i…](https://batteryuniversity.com/article/bu-205-types-of-lithium-ion)\n
        \n
        Anyway, thanks for your reference in any case! I’m not responding to criticize you, only to improve the utility of this conversation in case someone else finds it on search :)
        """
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    +body: "Oh my bad. I’m no battery expert by a long shot; just meant to contribute a good source of information. But you’re way ahead of me anyway. Carry on! 😊"
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
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        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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          Take a look at [Battery University](https://batteryuniversity.com/article/bu-206-lithium-polymer-substance-or-hype), I think it’s a great resource.\n
          \n
          On the topic of lithium polymer charging, it has this to say:\n
          \n
          > Charge and discharge characteristics of Li-polymer are identical to other Li-ion systems and do not require a dedicated charger. Safety issues are also similar in that protection circuits are needed. Gas buildup during charge can cause some prismatic and pouch cells to swell, and equipment manufacturers must make allowances for expansion. Li-polymer in a foil package may be less durable than Li-ion in the cylindrical package.
          """
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      +body: """
        Battery University is indeed a great resource!\n
        \n
        However this is not a lithium polymer battery, and as it’s a 32700, it is not a prismatic or pouch cell either. It is a lithium iron phosphate (LiFePO4) cylindrical battery in metal housing. Battery University does have them listed in their table of chemistries (in case you’re curious), but they don’t seem to have much detailed information. Enough to build a charger though :)\n
        \n
        [batteryuniversity.com/…/bu-216-summary-table-of-l…](https://batteryuniversity.com/article/bu-216-summary-table-of-lithium-based-batteries)\n
        \n
        Also some more detailed information here:\n
        \n
        [batteryuniversity.com/…/bu-205-types-of-lithium-i…](https://batteryuniversity.com/article/bu-205-types-of-lithium-ion)\n
        \n
        Anyway, thanks for your reference in any case! I’m not responding to criticize you, only to improve the utility of this conversation in case someone else finds it on search :)
        """
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    +body: "Oh my bad. I’m no battery expert by a long shot; just meant to contribute a good source of information. But you’re way ahead of me anyway. Carry on! 😊"
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      +slug: "Sanity-check-for-LiFePO4-Charger-Design"
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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          Take a look at [Battery University](https://batteryuniversity.com/article/bu-206-lithium-polymer-substance-or-hype), I think it’s a great resource.\n
          \n
          On the topic of lithium polymer charging, it has this to say:\n
          \n
          > Charge and discharge characteristics of Li-polymer are identical to other Li-ion systems and do not require a dedicated charger. Safety issues are also similar in that protection circuits are needed. Gas buildup during charge can cause some prismatic and pouch cells to swell, and equipment manufacturers must make allowances for expansion. Li-polymer in a foil package may be less durable than Li-ion in the cylindrical package.
          """
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      +body: """
        Battery University is indeed a great resource!\n
        \n
        However this is not a lithium polymer battery, and as it’s a 32700, it is not a prismatic or pouch cell either. It is a lithium iron phosphate (LiFePO4) cylindrical battery in metal housing. Battery University does have them listed in their table of chemistries (in case you’re curious), but they don’t seem to have much detailed information. Enough to build a charger though :)\n
        \n
        [batteryuniversity.com/…/bu-216-summary-table-of-l…](https://batteryuniversity.com/article/bu-216-summary-table-of-lithium-based-batteries)\n
        \n
        Also some more detailed information here:\n
        \n
        [batteryuniversity.com/…/bu-205-types-of-lithium-i…](https://batteryuniversity.com/article/bu-205-types-of-lithium-ion)\n
        \n
        Anyway, thanks for your reference in any case! I’m not responding to criticize you, only to improve the utility of this conversation in case someone else finds it on search :)
        """
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    +body: "Oh my bad. I’m no battery expert by a long shot; just meant to contribute a good source of information. But you’re way ahead of me anyway. Carry on! 😊"
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      +slug: "Sanity-check-for-LiFePO4-Charger-Design"
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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          Take a look at [Battery University](https://batteryuniversity.com/article/bu-206-lithium-polymer-substance-or-hype), I think it’s a great resource.\n
          \n
          On the topic of lithium polymer charging, it has this to say:\n
          \n
          > Charge and discharge characteristics of Li-polymer are identical to other Li-ion systems and do not require a dedicated charger. Safety issues are also similar in that protection circuits are needed. Gas buildup during charge can cause some prismatic and pouch cells to swell, and equipment manufacturers must make allowances for expansion. Li-polymer in a foil package may be less durable than Li-ion in the cylindrical package.
          """
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      +body: """
        Battery University is indeed a great resource!\n
        \n
        However this is not a lithium polymer battery, and as it’s a 32700, it is not a prismatic or pouch cell either. It is a lithium iron phosphate (LiFePO4) cylindrical battery in metal housing. Battery University does have them listed in their table of chemistries (in case you’re curious), but they don’t seem to have much detailed information. Enough to build a charger though :)\n
        \n
        [batteryuniversity.com/…/bu-216-summary-table-of-l…](https://batteryuniversity.com/article/bu-216-summary-table-of-lithium-based-batteries)\n
        \n
        Also some more detailed information here:\n
        \n
        [batteryuniversity.com/…/bu-205-types-of-lithium-i…](https://batteryuniversity.com/article/bu-205-types-of-lithium-ion)\n
        \n
        Anyway, thanks for your reference in any case! I’m not responding to criticize you, only to improve the utility of this conversation in case someone else finds it on search :)
        """
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    +body: "Oh my bad. I’m no battery expert by a long shot; just meant to contribute a good source of information. But you’re way ahead of me anyway. Carry on! 😊"
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      +slug: "Sanity-check-for-LiFePO4-Charger-Design"
      +title: "Sanity check for LiFePO4 Charger Design"
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      +body: """
        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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          Take a look at [Battery University](https://batteryuniversity.com/article/bu-206-lithium-polymer-substance-or-hype), I think it’s a great resource.\n
          \n
          On the topic of lithium polymer charging, it has this to say:\n
          \n
          > Charge and discharge characteristics of Li-polymer are identical to other Li-ion systems and do not require a dedicated charger. Safety issues are also similar in that protection circuits are needed. Gas buildup during charge can cause some prismatic and pouch cells to swell, and equipment manufacturers must make allowances for expansion. Li-polymer in a foil package may be less durable than Li-ion in the cylindrical package.
          """
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      +body: """
        Battery University is indeed a great resource!\n
        \n
        However this is not a lithium polymer battery, and as it’s a 32700, it is not a prismatic or pouch cell either. It is a lithium iron phosphate (LiFePO4) cylindrical battery in metal housing. Battery University does have them listed in their table of chemistries (in case you’re curious), but they don’t seem to have much detailed information. Enough to build a charger though :)\n
        \n
        [batteryuniversity.com/…/bu-216-summary-table-of-l…](https://batteryuniversity.com/article/bu-216-summary-table-of-lithium-based-batteries)\n
        \n
        Also some more detailed information here:\n
        \n
        [batteryuniversity.com/…/bu-205-types-of-lithium-i…](https://batteryuniversity.com/article/bu-205-types-of-lithium-ion)\n
        \n
        Anyway, thanks for your reference in any case! I’m not responding to criticize you, only to improve the utility of this conversation in case someone else finds it on search :)
        """
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    +body: "Oh my bad. I’m no battery expert by a long shot; just meant to contribute a good source of information. But you’re way ahead of me anyway. Carry on! 😊"
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
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        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
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        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
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        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
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      Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
      \n
      Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
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      Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
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      You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
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        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
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      Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
      \n
      Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
      \n
      Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
      \n
      You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
      """
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Input props 
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Attributes 
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Component 
App\Twig\Components\DateComponent {#8292
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Component 
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          **For questions about component-level electronic circuits, tools and equipment.**\n
          \n
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          2: Be on-topic (eg: *Electronic*, not *electrical*).\n
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
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        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
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        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
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        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
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      Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
      \n
      Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
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      Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
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      You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
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        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
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        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
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      Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
      \n
      Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
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      Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
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      You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
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        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
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      Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
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      Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
      \n
      Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
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      You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
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        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
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        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
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        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
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        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
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      Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
      \n
      Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
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      Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
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      You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
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      +slug: "Sanity-check-for-LiFePO4-Charger-Design"
      +title: "Sanity check for LiFePO4 Charger Design"
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      +body: """
        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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      Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
      \n
      Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
      \n
      Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
      \n
      You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
      """
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          +body: """
            There are really charging curves that should be followed to avoid damaging the cells.\n
            \n
            You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
            \n
            I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
            \n
            [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
            """
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        +body: "LFP cells have excellent cycle life anyway (2000+ cycles); is it worth worrying about staying at 95%?"
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      +body: "It’s just that it’s really tricky to charge the final bit because the middle 80% is such a flat voltage curve. They have a 1000x life when they’re taken care of."
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      +body: """
        Makes sense!\n
        \n
        I’d order online if there was a LiFePO4 charger on the market. However, in my country I’ve been unable to find one, and importing (excise & duties, paperwork) is more work than building it myself. I’ll also likely need a design that I can cheaply include on custom PCBs for manufacture (not for sale to end-users, but for internal use by maintenance technicians).\n
        \n
        I gave it a test on a cell today and it seems to charge fine and at a reasonable rate – but in a sudden flash of brilliance, I forgot to physically connect the ADC pin to the battery, so it couldn’t shut off. Well, that’s what testing is for I guess.\n
        \n
        Anyway after fixing this, it looks like I can call this a win and move on. If it undergoes destructive optimization, I’ll report back here with a warning to others.
        """
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      }
      +entry: App\Entity\Entry {#2388}
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      +root: App\Entity\EntryComment {#4149}
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    185023 => App\Entity\EntryComment {#4316}
    215012 => App\Entity\EntryComment {#4332
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      +entry: App\Entity\Entry {#2388}
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      +image: null
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      +body: "What you are talking about is nothing special at all and not following a charging curve. The curve automatically looks the way it does when charging CCCV. Constant Current -> Constant Voltage."
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    }
    215021 => App\Entity\EntryComment {#4412
      +user: App\Entity\User {#3980}
      +entry: App\Entity\Entry {#2388}
      +magazine: App\Entity\Magazine {#266}
      +image: null
      +parent: App\Entity\EntryComment {#4386}
      +root: App\Entity\EntryComment {#4149}
      +body: "It is in no way tricky. Simply apply a constant voltage."
      +lang: "en"
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        "@ignotum@lemmy.world"
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        "@HewlettHackard@lemmy.ca"
      ]
      +children: Doctrine\ORM\PersistentCollection {#4404 …}
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      -id: 215021
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    215304 => App\Entity\EntryComment {#4434
      +user: Proxies\__CG__\App\Entity\User {#4248 …2}
      +entry: App\Entity\Entry {#2388}
      +magazine: App\Entity\Magazine {#266}
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      +parent: App\Entity\EntryComment {#4412}
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      +body: "It’s tricky to stop at the right point, because lithium iron only have a very small voltage increase between like 40% and 90% and they ramp up to full voltage right near the limit of their capacity."
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  ]
  +level: 1
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  -entryCommentRepository: App\Repository\EntryCommentRepository {#558 …}
  -twig: Twig\Environment {#1252 …}
  -security: Symfony\Bundle\SecurityBundle\Security {#1101 …}
  -cache: Symfony\Component\Cache\Adapter\TraceableTagAwareAdapter {#600 …}
  -requestStack: Symfony\Component\HttpFoundation\RequestStack {#1328 …}
}
entry_comment App\Twig\Components\EntryCommentComponent 12.0 MiB 6.30 ms
Input props 
[
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      +__isInitialized__: true
       …2
    }
    +entry: App\Entity\Entry {#2388
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        +title: "askelectronics"
        +description: """
          **For questions about component-level electronic circuits, tools and equipment.**\n
          \n
          Rules\n
          -----\n
          \n
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          \n
          2: Be on-topic (eg: *Electronic*, not *electrical*).\n
          \n
          3: No commercial stuff, buying, selling or valuations.\n
          \n
          4: Be safe.\n
          \n
          ---
          """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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        Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
        \n
        Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
        \n
        Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
        \n
        You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
        """
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      Makes sense!\n
      \n
      I’d order online if there was a LiFePO4 charger on the market. However, in my country I’ve been unable to find one, and importing (excise & duties, paperwork) is more work than building it myself. I’ll also likely need a design that I can cheaply include on custom PCBs for manufacture (not for sale to end-users, but for internal use by maintenance technicians).\n
      \n
      I gave it a test on a cell today and it seems to charge fine and at a reasonable rate – but in a sudden flash of brilliance, I forgot to physically connect the ADC pin to the battery, so it couldn’t shut off. Well, that’s what testing is for I guess.\n
      \n
      Anyway after fixing this, it looks like I can call this a win and move on. If it undergoes destructive optimization, I’ll report back here with a warning to others.
      """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
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        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
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      +entry: App\Entity\Entry {#2388}
      +magazine: App\Entity\Magazine {#266}
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      +body: """
        Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
        \n
        Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
        \n
        Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
        \n
        You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
        """
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    +body: """
      Makes sense!\n
      \n
      I’d order online if there was a LiFePO4 charger on the market. However, in my country I’ve been unable to find one, and importing (excise & duties, paperwork) is more work than building it myself. I’ll also likely need a design that I can cheaply include on custom PCBs for manufacture (not for sale to end-users, but for internal use by maintenance technicians).\n
      \n
      I gave it a test on a cell today and it seems to charge fine and at a reasonable rate – but in a sudden flash of brilliance, I forgot to physically connect the ADC pin to the battery, so it couldn’t shut off. Well, that’s what testing is for I guess.\n
      \n
      Anyway after fixing this, it looks like I can call this a win and move on. If it undergoes destructive optimization, I’ll report back here with a warning to others.
      """
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user_inline App\Twig\Components\UserInlineComponent 12.0 MiB 0.16 ms
Input props 
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date App\Twig\Components\DateComponent 12.0 MiB 0.15 ms
Input props 
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Attributes 
[]
Component 
App\Twig\Components\DateComponent {#8938
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date_edited App\Twig\Components\DateEditedComponent 12.0 MiB 0.13 ms
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Component 
App\Twig\Components\DateEditedComponent {#8992
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Input props 
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      +slug: "Sanity-check-for-LiFePO4-Charger-Design"
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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        Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
        \n
        Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
        \n
        Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
        \n
        You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
        """
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      Makes sense!\n
      \n
      I’d order online if there was a LiFePO4 charger on the market. However, in my country I’ve been unable to find one, and importing (excise & duties, paperwork) is more work than building it myself. I’ll also likely need a design that I can cheaply include on custom PCBs for manufacture (not for sale to end-users, but for internal use by maintenance technicians).\n
      \n
      I gave it a test on a cell today and it seems to charge fine and at a reasonable rate – but in a sudden flash of brilliance, I forgot to physically connect the ADC pin to the battery, so it couldn’t shut off. Well, that’s what testing is for I guess.\n
      \n
      Anyway after fixing this, it looks like I can call this a win and move on. If it undergoes destructive optimization, I’ll report back here with a warning to others.
      """
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        Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
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        Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
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        Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
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        You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
        """
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      Makes sense!\n
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      I’d order online if there was a LiFePO4 charger on the market. However, in my country I’ve been unable to find one, and importing (excise & duties, paperwork) is more work than building it myself. I’ll also likely need a design that I can cheaply include on custom PCBs for manufacture (not for sale to end-users, but for internal use by maintenance technicians).\n
      \n
      I gave it a test on a cell today and it seems to charge fine and at a reasonable rate – but in a sudden flash of brilliance, I forgot to physically connect the ADC pin to the battery, so it couldn’t shut off. Well, that’s what testing is for I guess.\n
      \n
      Anyway after fixing this, it looks like I can call this a win and move on. If it undergoes destructive optimization, I’ll report back here with a warning to others.
      """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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        Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
        \n
        Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
        \n
        Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
        \n
        You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
        """
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      Makes sense!\n
      \n
      I’d order online if there was a LiFePO4 charger on the market. However, in my country I’ve been unable to find one, and importing (excise & duties, paperwork) is more work than building it myself. I’ll also likely need a design that I can cheaply include on custom PCBs for manufacture (not for sale to end-users, but for internal use by maintenance technicians).\n
      \n
      I gave it a test on a cell today and it seems to charge fine and at a reasonable rate – but in a sudden flash of brilliance, I forgot to physically connect the ADC pin to the battery, so it couldn’t shut off. Well, that’s what testing is for I guess.\n
      \n
      Anyway after fixing this, it looks like I can call this a win and move on. If it undergoes destructive optimization, I’ll report back here with a warning to others.
      """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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        Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
        \n
        Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
        \n
        Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
        \n
        You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
        """
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      Makes sense!\n
      \n
      I’d order online if there was a LiFePO4 charger on the market. However, in my country I’ve been unable to find one, and importing (excise & duties, paperwork) is more work than building it myself. I’ll also likely need a design that I can cheaply include on custom PCBs for manufacture (not for sale to end-users, but for internal use by maintenance technicians).\n
      \n
      I gave it a test on a cell today and it seems to charge fine and at a reasonable rate – but in a sudden flash of brilliance, I forgot to physically connect the ADC pin to the battery, so it couldn’t shut off. Well, that’s what testing is for I guess.\n
      \n
      Anyway after fixing this, it looks like I can call this a win and move on. If it undergoes destructive optimization, I’ll report back here with a warning to others.
      """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
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        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
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        Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
        \n
        Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
        \n
        Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
        \n
        You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
        """
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      Makes sense!\n
      \n
      I’d order online if there was a LiFePO4 charger on the market. However, in my country I’ve been unable to find one, and importing (excise & duties, paperwork) is more work than building it myself. I’ll also likely need a design that I can cheaply include on custom PCBs for manufacture (not for sale to end-users, but for internal use by maintenance technicians).\n
      \n
      I gave it a test on a cell today and it seems to charge fine and at a reasonable rate – but in a sudden flash of brilliance, I forgot to physically connect the ADC pin to the battery, so it couldn’t shut off. Well, that’s what testing is for I guess.\n
      \n
      Anyway after fixing this, it looks like I can call this a win and move on. If it undergoes destructive optimization, I’ll report back here with a warning to others.
      """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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        Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
        \n
        Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
        \n
        Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
        \n
        You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
        """
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      Makes sense!\n
      \n
      I’d order online if there was a LiFePO4 charger on the market. However, in my country I’ve been unable to find one, and importing (excise & duties, paperwork) is more work than building it myself. I’ll also likely need a design that I can cheaply include on custom PCBs for manufacture (not for sale to end-users, but for internal use by maintenance technicians).\n
      \n
      I gave it a test on a cell today and it seems to charge fine and at a reasonable rate – but in a sudden flash of brilliance, I forgot to physically connect the ADC pin to the battery, so it couldn’t shut off. Well, that’s what testing is for I guess.\n
      \n
      Anyway after fixing this, it looks like I can call this a win and move on. If it undergoes destructive optimization, I’ll report back here with a warning to others.
      """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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        Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
        \n
        Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
        \n
        Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
        \n
        You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
        """
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      There are really charging curves that should be followed to avoid damaging the cells.\n
      \n
      You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
      \n
      I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
      \n
      [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
      """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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        Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
        \n
        Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
        \n
        Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
        \n
        You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
        """
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    +body: """
      There are really charging curves that should be followed to avoid damaging the cells.\n
      \n
      You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
      \n
      I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
      \n
      [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
      """
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user_inline App\Twig\Components\UserInlineComponent 12.0 MiB 12.21 ms
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Component 
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vote App\Twig\Components\VoteComponent 12.0 MiB 0.45 ms
Input props 
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          **For questions about component-level electronic circuits, tools and equipment.**\n
          \n
          Rules\n
          -----\n
          \n
          1: Be nice.\n
          \n
          2: Be on-topic (eg: *Electronic*, not *electrical*).\n
          \n
          3: No commercial stuff, buying, selling or valuations.\n
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      +slug: "Sanity-check-for-LiFePO4-Charger-Design"
      +title: "Sanity check for LiFePO4 Charger Design"
      +url: null
      +body: """
        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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      +body: """
        Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
        \n
        Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
        \n
        Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
        \n
        You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
        """
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      There are really charging curves that should be followed to avoid damaging the cells.\n
      \n
      You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
      \n
      I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
      \n
      [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
      """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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        Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
        \n
        Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
        \n
        Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
        \n
        You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
        """
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      There are really charging curves that should be followed to avoid damaging the cells.\n
      \n
      You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
      \n
      I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
      \n
      [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
      """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
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        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
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        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
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        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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        Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
        \n
        Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
        \n
        Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
        \n
        You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
        """
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      There are really charging curves that should be followed to avoid damaging the cells.\n
      \n
      You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
      \n
      I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
      \n
      [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
      """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
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        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
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        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
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        Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
        \n
        Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
        \n
        Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
        \n
        You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
        """
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      There are really charging curves that should be followed to avoid damaging the cells.\n
      \n
      You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
      \n
      I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
      \n
      [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
      """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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        Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
        \n
        Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
        \n
        Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
        \n
        You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
        """
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      There are really charging curves that should be followed to avoid damaging the cells.\n
      \n
      You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
      \n
      I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
      \n
      [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
      """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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        Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
        \n
        Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
        \n
        Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
        \n
        You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
        """
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      There are really charging curves that should be followed to avoid damaging the cells.\n
      \n
      You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
      \n
      I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
      \n
      [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
      """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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          Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
          \n
          Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
          \n
          Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
          \n
          You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
          """
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        There are really charging curves that should be followed to avoid damaging the cells.\n
        \n
        You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
        \n
        I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
        \n
        [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
        """
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      +slug: "Sanity-check-for-LiFePO4-Charger-Design"
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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          Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
          \n
          Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
          \n
          Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
          \n
          You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
          """
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        There are really charging curves that should be followed to avoid damaging the cells.\n
        \n
        You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
        \n
        I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
        \n
        [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
        """
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    +showSubscribedMagazines: true
    +showSubscribedDomains: true
    +preferredLanguages: []
    +featuredMagazines: null
    +showProfileSubscriptions: false
    +showProfileFollowings: true
    +markNewComments: false
    +notifyOnNewEntry: false
    +notifyOnNewEntryReply: true
    +notifyOnNewEntryCommentReply: true
    +notifyOnNewPost: false
    +notifyOnNewPostReply: true
    +notifyOnNewPostCommentReply: true
    +addMentionsEntries: false
    +addMentionsPosts: true
    +isBanned: false
    +isVerified: false
    +isDeleted: false
    +isBot: false
    +spamProtection: true
    +customCss: null
    +ignoreMagazinesCustomCss: false
    +moderatorTokens: Doctrine\ORM\PersistentCollection {#10288 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#10291 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#10293 …}
    +entries: Doctrine\ORM\PersistentCollection {#10295 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#10297 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#10299 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#10301 …}
    +posts: Doctrine\ORM\PersistentCollection {#10303 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#10305 …}
    +postComments: Doctrine\ORM\PersistentCollection {#10307 …}
    +postCommentVotes: Doctrine\ORM\PersistentCollection {#10309 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#10311 …}
    +subscribedDomains: Doctrine\ORM\PersistentCollection {#10313 …}
    +follows: Doctrine\ORM\PersistentCollection {#10315 …}
    +followers: Doctrine\ORM\PersistentCollection {#10317 …}
    +blocks: Doctrine\ORM\PersistentCollection {#10319 …}
    +blockers: Doctrine\ORM\PersistentCollection {#10321 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#10323 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#10325 …}
    +reports: Doctrine\ORM\PersistentCollection {#10327 …}
    +favourites: Doctrine\ORM\PersistentCollection {#10329 …}
    +violations: Doctrine\ORM\PersistentCollection {#10331 …}
    +notifications: Doctrine\ORM\PersistentCollection {#10333 …}
    +awards: Doctrine\ORM\PersistentCollection {#10335 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#10337 …}
    +categories: Doctrine\ORM\PersistentCollection {#10339 …}
    -id: 46139
    -password: "$2y$13$qLqs7g.W.LX.cGbhhrEAHeW/GBeTo4xAbwoiotysYMttpu3t9gyRa"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#10341 …}
    +apId: "ColeSloth@discuss.tchncs.de"
    +apProfileId: "https://discuss.tchncs.de/u/ColeSloth"
    +apPublicUrl: "https://discuss.tchncs.de/u/ColeSloth"
    +apFollowersUrl: null
    +apInboxUrl: "https://discuss.tchncs.de/inbox"
    +apDomain: "discuss.tchncs.de"
    +apPreferredUsername: "ColeSloth"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: false
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1728424337 {#10280
      date: 2024-10-08 23:52:17.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1694700144 {#10282
      date: 2023-09-14 16:02:24.0 +02:00
    }
    +__isInitialized__: true
     …2
  }
  "showAvatar" => false
]
Attributes 
[]
Component 
App\Twig\Components\UserInlineComponent {#10243
  +user: Proxies\__CG__\App\Entity\User {#4300
    +avatar: null
    +cover: null
    +email: "ColeSloth@discuss.tchncs.de"
    +username: "@ColeSloth@discuss.tchncs.de"
    +roles: []
    +followersCount: 0
    +homepage: "front"
    +about: null
    +lastActive: DateTime @1729408519 {#10283
      date: 2024-10-20 09:15:19.0 +02:00
    }
    +markedForDeletionAt: null
    +fields: null
    +oauthGithubId: null
    +oauthGoogleId: null
    +oauthFacebookId: null
    +oauthKeycloakId: null
    +hideAdult: true
    +showSubscribedUsers: true
    +showSubscribedMagazines: true
    +showSubscribedDomains: true
    +preferredLanguages: []
    +featuredMagazines: null
    +showProfileSubscriptions: false
    +showProfileFollowings: true
    +markNewComments: false
    +notifyOnNewEntry: false
    +notifyOnNewEntryReply: true
    +notifyOnNewEntryCommentReply: true
    +notifyOnNewPost: false
    +notifyOnNewPostReply: true
    +notifyOnNewPostCommentReply: true
    +addMentionsEntries: false
    +addMentionsPosts: true
    +isBanned: false
    +isVerified: false
    +isDeleted: false
    +isBot: false
    +spamProtection: true
    +customCss: null
    +ignoreMagazinesCustomCss: false
    +moderatorTokens: Doctrine\ORM\PersistentCollection {#10288 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#10291 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#10293 …}
    +entries: Doctrine\ORM\PersistentCollection {#10295 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#10297 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#10299 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#10301 …}
    +posts: Doctrine\ORM\PersistentCollection {#10303 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#10305 …}
    +postComments: Doctrine\ORM\PersistentCollection {#10307 …}
    +postCommentVotes: Doctrine\ORM\PersistentCollection {#10309 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#10311 …}
    +subscribedDomains: Doctrine\ORM\PersistentCollection {#10313 …}
    +follows: Doctrine\ORM\PersistentCollection {#10315 …}
    +followers: Doctrine\ORM\PersistentCollection {#10317 …}
    +blocks: Doctrine\ORM\PersistentCollection {#10319 …}
    +blockers: Doctrine\ORM\PersistentCollection {#10321 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#10323 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#10325 …}
    +reports: Doctrine\ORM\PersistentCollection {#10327 …}
    +favourites: Doctrine\ORM\PersistentCollection {#10329 …}
    +violations: Doctrine\ORM\PersistentCollection {#10331 …}
    +notifications: Doctrine\ORM\PersistentCollection {#10333 …}
    +awards: Doctrine\ORM\PersistentCollection {#10335 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#10337 …}
    +categories: Doctrine\ORM\PersistentCollection {#10339 …}
    -id: 46139
    -password: "$2y$13$qLqs7g.W.LX.cGbhhrEAHeW/GBeTo4xAbwoiotysYMttpu3t9gyRa"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#10341 …}
    +apId: "ColeSloth@discuss.tchncs.de"
    +apProfileId: "https://discuss.tchncs.de/u/ColeSloth"
    +apPublicUrl: "https://discuss.tchncs.de/u/ColeSloth"
    +apFollowersUrl: null
    +apInboxUrl: "https://discuss.tchncs.de/inbox"
    +apDomain: "discuss.tchncs.de"
    +apPreferredUsername: "ColeSloth"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: false
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1728424337 {#10280
      date: 2024-10-08 23:52:17.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1694700144 {#10282
      date: 2023-09-14 16:02:24.0 +02:00
    }
    +__isInitialized__: true
     …2
  }
  +showAvatar: false
}
date App\Twig\Components\DateComponent 12.0 MiB 0.15 ms
Input props 
[
  "date" => DateTimeImmutable @1701359818 {#4293
    date: 2023-11-30 16:56:58.0 +01:00
  }
]
Attributes 
[]
Component 
App\Twig\Components\DateComponent {#10361
  +date: DateTimeImmutable @1701359818 {#4293
    date: 2023-11-30 16:56:58.0 +01:00
  }
}
date_edited App\Twig\Components\DateEditedComponent 12.0 MiB 0.09 ms
Input props 
[
  "createdAt" => DateTimeImmutable @1701359818 {#4293
    date: 2023-11-30 16:56:58.0 +01:00
  }
  "editedAt" => null
]
Attributes 
[]
Component 
App\Twig\Components\DateEditedComponent {#10415
  +createdAt: DateTimeImmutable @1701359818 {#4293
    date: 2023-11-30 16:56:58.0 +01:00
  }
  +editedAt: null
}
user_avatar App\Twig\Components\UserAvatarComponent 12.0 MiB 0.14 ms
Input props 
[
  "user" => Proxies\__CG__\App\Entity\User {#4300
    +avatar: null
    +cover: null
    +email: "ColeSloth@discuss.tchncs.de"
    +username: "@ColeSloth@discuss.tchncs.de"
    +roles: []
    +followersCount: 0
    +homepage: "front"
    +about: null
    +lastActive: DateTime @1729408519 {#10283
      date: 2024-10-20 09:15:19.0 +02:00
    }
    +markedForDeletionAt: null
    +fields: null
    +oauthGithubId: null
    +oauthGoogleId: null
    +oauthFacebookId: null
    +oauthKeycloakId: null
    +hideAdult: true
    +showSubscribedUsers: true
    +showSubscribedMagazines: true
    +showSubscribedDomains: true
    +preferredLanguages: []
    +featuredMagazines: null
    +showProfileSubscriptions: false
    +showProfileFollowings: true
    +markNewComments: false
    +notifyOnNewEntry: false
    +notifyOnNewEntryReply: true
    +notifyOnNewEntryCommentReply: true
    +notifyOnNewPost: false
    +notifyOnNewPostReply: true
    +notifyOnNewPostCommentReply: true
    +addMentionsEntries: false
    +addMentionsPosts: true
    +isBanned: false
    +isVerified: false
    +isDeleted: false
    +isBot: false
    +spamProtection: true
    +customCss: null
    +ignoreMagazinesCustomCss: false
    +moderatorTokens: Doctrine\ORM\PersistentCollection {#10288 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#10291 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#10293 …}
    +entries: Doctrine\ORM\PersistentCollection {#10295 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#10297 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#10299 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#10301 …}
    +posts: Doctrine\ORM\PersistentCollection {#10303 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#10305 …}
    +postComments: Doctrine\ORM\PersistentCollection {#10307 …}
    +postCommentVotes: Doctrine\ORM\PersistentCollection {#10309 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#10311 …}
    +subscribedDomains: Doctrine\ORM\PersistentCollection {#10313 …}
    +follows: Doctrine\ORM\PersistentCollection {#10315 …}
    +followers: Doctrine\ORM\PersistentCollection {#10317 …}
    +blocks: Doctrine\ORM\PersistentCollection {#10319 …}
    +blockers: Doctrine\ORM\PersistentCollection {#10321 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#10323 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#10325 …}
    +reports: Doctrine\ORM\PersistentCollection {#10327 …}
    +favourites: Doctrine\ORM\PersistentCollection {#10329 …}
    +violations: Doctrine\ORM\PersistentCollection {#10331 …}
    +notifications: Doctrine\ORM\PersistentCollection {#10333 …}
    +awards: Doctrine\ORM\PersistentCollection {#10335 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#10337 …}
    +categories: Doctrine\ORM\PersistentCollection {#10339 …}
    -id: 46139
    -password: "$2y$13$qLqs7g.W.LX.cGbhhrEAHeW/GBeTo4xAbwoiotysYMttpu3t9gyRa"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#10341 …}
    +apId: "ColeSloth@discuss.tchncs.de"
    +apProfileId: "https://discuss.tchncs.de/u/ColeSloth"
    +apPublicUrl: "https://discuss.tchncs.de/u/ColeSloth"
    +apFollowersUrl: null
    +apInboxUrl: "https://discuss.tchncs.de/inbox"
    +apDomain: "discuss.tchncs.de"
    +apPreferredUsername: "ColeSloth"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: false
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1728424337 {#10280
      date: 2024-10-08 23:52:17.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1694700144 {#10282
      date: 2023-09-14 16:02:24.0 +02:00
    }
    +__isInitialized__: true
     …2
  }
  "width" => 40
  "height" => 40
  "asLink" => true
]
Attributes 
[]
Component 
App\Twig\Components\UserAvatarComponent {#10469
  +width: 40
  +height: 40
  +user: Proxies\__CG__\App\Entity\User {#4300
    +avatar: null
    +cover: null
    +email: "ColeSloth@discuss.tchncs.de"
    +username: "@ColeSloth@discuss.tchncs.de"
    +roles: []
    +followersCount: 0
    +homepage: "front"
    +about: null
    +lastActive: DateTime @1729408519 {#10283
      date: 2024-10-20 09:15:19.0 +02:00
    }
    +markedForDeletionAt: null
    +fields: null
    +oauthGithubId: null
    +oauthGoogleId: null
    +oauthFacebookId: null
    +oauthKeycloakId: null
    +hideAdult: true
    +showSubscribedUsers: true
    +showSubscribedMagazines: true
    +showSubscribedDomains: true
    +preferredLanguages: []
    +featuredMagazines: null
    +showProfileSubscriptions: false
    +showProfileFollowings: true
    +markNewComments: false
    +notifyOnNewEntry: false
    +notifyOnNewEntryReply: true
    +notifyOnNewEntryCommentReply: true
    +notifyOnNewPost: false
    +notifyOnNewPostReply: true
    +notifyOnNewPostCommentReply: true
    +addMentionsEntries: false
    +addMentionsPosts: true
    +isBanned: false
    +isVerified: false
    +isDeleted: false
    +isBot: false
    +spamProtection: true
    +customCss: null
    +ignoreMagazinesCustomCss: false
    +moderatorTokens: Doctrine\ORM\PersistentCollection {#10288 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#10291 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#10293 …}
    +entries: Doctrine\ORM\PersistentCollection {#10295 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#10297 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#10299 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#10301 …}
    +posts: Doctrine\ORM\PersistentCollection {#10303 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#10305 …}
    +postComments: Doctrine\ORM\PersistentCollection {#10307 …}
    +postCommentVotes: Doctrine\ORM\PersistentCollection {#10309 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#10311 …}
    +subscribedDomains: Doctrine\ORM\PersistentCollection {#10313 …}
    +follows: Doctrine\ORM\PersistentCollection {#10315 …}
    +followers: Doctrine\ORM\PersistentCollection {#10317 …}
    +blocks: Doctrine\ORM\PersistentCollection {#10319 …}
    +blockers: Doctrine\ORM\PersistentCollection {#10321 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#10323 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#10325 …}
    +reports: Doctrine\ORM\PersistentCollection {#10327 …}
    +favourites: Doctrine\ORM\PersistentCollection {#10329 …}
    +violations: Doctrine\ORM\PersistentCollection {#10331 …}
    +notifications: Doctrine\ORM\PersistentCollection {#10333 …}
    +awards: Doctrine\ORM\PersistentCollection {#10335 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#10337 …}
    +categories: Doctrine\ORM\PersistentCollection {#10339 …}
    -id: 46139
    -password: "$2y$13$qLqs7g.W.LX.cGbhhrEAHeW/GBeTo4xAbwoiotysYMttpu3t9gyRa"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#10341 …}
    +apId: "ColeSloth@discuss.tchncs.de"
    +apProfileId: "https://discuss.tchncs.de/u/ColeSloth"
    +apPublicUrl: "https://discuss.tchncs.de/u/ColeSloth"
    +apFollowersUrl: null
    +apInboxUrl: "https://discuss.tchncs.de/inbox"
    +apDomain: "discuss.tchncs.de"
    +apPreferredUsername: "ColeSloth"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: false
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1728424337 {#10280
      date: 2024-10-08 23:52:17.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1694700144 {#10282
      date: 2023-09-14 16:02:24.0 +02:00
    }
    +__isInitialized__: true
     …2
  }
  +asLink: true
}
vote App\Twig\Components\VoteComponent 12.0 MiB 0.49 ms
Input props 
[
  "subject" => App\Entity\EntryComment {#4297
    +user: Proxies\__CG__\App\Entity\User {#4300
      +avatar: null
      +cover: null
      +email: "ColeSloth@discuss.tchncs.de"
      +username: "@ColeSloth@discuss.tchncs.de"
      +roles: []
      +followersCount: 0
      +homepage: "front"
      +about: null
      +lastActive: DateTime @1729408519 {#10283
        date: 2024-10-20 09:15:19.0 +02:00
      }
      +markedForDeletionAt: null
      +fields: null
      +oauthGithubId: null
      +oauthGoogleId: null
      +oauthFacebookId: null
      +oauthKeycloakId: null
      +hideAdult: true
      +showSubscribedUsers: true
      +showSubscribedMagazines: true
      +showSubscribedDomains: true
      +preferredLanguages: []
      +featuredMagazines: null
      +showProfileSubscriptions: false
      +showProfileFollowings: true
      +markNewComments: false
      +notifyOnNewEntry: false
      +notifyOnNewEntryReply: true
      +notifyOnNewEntryCommentReply: true
      +notifyOnNewPost: false
      +notifyOnNewPostReply: true
      +notifyOnNewPostCommentReply: true
      +addMentionsEntries: false
      +addMentionsPosts: true
      +isBanned: false
      +isVerified: false
      +isDeleted: false
      +isBot: false
      +spamProtection: true
      +customCss: null
      +ignoreMagazinesCustomCss: false
      +moderatorTokens: Doctrine\ORM\PersistentCollection {#10288 …}
      +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#10291 …}
      +moderatorRequests: Doctrine\ORM\PersistentCollection {#10293 …}
      +entries: Doctrine\ORM\PersistentCollection {#10295 …}
      +entryVotes: Doctrine\ORM\PersistentCollection {#10297 …}
      +entryComments: Doctrine\ORM\PersistentCollection {#10299 …}
      +entryCommentVotes: Doctrine\ORM\PersistentCollection {#10301 …}
      +posts: Doctrine\ORM\PersistentCollection {#10303 …}
      +postVotes: Doctrine\ORM\PersistentCollection {#10305 …}
      +postComments: Doctrine\ORM\PersistentCollection {#10307 …}
      +postCommentVotes: Doctrine\ORM\PersistentCollection {#10309 …}
      +subscriptions: Doctrine\ORM\PersistentCollection {#10311 …}
      +subscribedDomains: Doctrine\ORM\PersistentCollection {#10313 …}
      +follows: Doctrine\ORM\PersistentCollection {#10315 …}
      +followers: Doctrine\ORM\PersistentCollection {#10317 …}
      +blocks: Doctrine\ORM\PersistentCollection {#10319 …}
      +blockers: Doctrine\ORM\PersistentCollection {#10321 …}
      +blockedMagazines: Doctrine\ORM\PersistentCollection {#10323 …}
      +blockedDomains: Doctrine\ORM\PersistentCollection {#10325 …}
      +reports: Doctrine\ORM\PersistentCollection {#10327 …}
      +favourites: Doctrine\ORM\PersistentCollection {#10329 …}
      +violations: Doctrine\ORM\PersistentCollection {#10331 …}
      +notifications: Doctrine\ORM\PersistentCollection {#10333 …}
      +awards: Doctrine\ORM\PersistentCollection {#10335 …}
      +subscribedCategories: Doctrine\ORM\PersistentCollection {#10337 …}
      +categories: Doctrine\ORM\PersistentCollection {#10339 …}
      -id: 46139
      -password: "$2y$13$qLqs7g.W.LX.cGbhhrEAHeW/GBeTo4xAbwoiotysYMttpu3t9gyRa"
      -totpSecret: null
      -totpBackupCodes: []
      -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#10341 …}
      +apId: "ColeSloth@discuss.tchncs.de"
      +apProfileId: "https://discuss.tchncs.de/u/ColeSloth"
      +apPublicUrl: "https://discuss.tchncs.de/u/ColeSloth"
      +apFollowersUrl: null
      +apInboxUrl: "https://discuss.tchncs.de/inbox"
      +apDomain: "discuss.tchncs.de"
      +apPreferredUsername: "ColeSloth"
      +apDiscoverable: true
      +apManuallyApprovesFollowers: false
      +privateKey: null
      +publicKey: null
      +apFetchedAt: DateTime @1728424337 {#10280
        date: 2024-10-08 23:52:17.0 +02:00
      }
      +apDeletedAt: null
      +apTimeoutAt: null
      +visibility: "visible             "
      +createdAt: DateTimeImmutable @1694700144 {#10282
        date: 2023-09-14 16:02:24.0 +02:00
      }
      +__isInitialized__: true
       …2
    }
    +entry: App\Entity\Entry {#2388
      +user: Proxies\__CG__\App\Entity\User {#1943
        +avatar: null
        +cover: null
        +email: "Saigonauticon@voltage.vn"
        +username: "@Saigonauticon@voltage.vn"
        +roles: []
        +followersCount: 0
        +homepage: "front"
        +about: null
        +lastActive: DateTime @1703981706 {#1516
          date: 2023-12-31 01:15:06.0 +01:00
        }
        +markedForDeletionAt: null
        +fields: null
        +oauthGithubId: null
        +oauthGoogleId: null
        +oauthFacebookId: null
        +oauthKeycloakId: null
        +hideAdult: true
        +showSubscribedUsers: true
        +showSubscribedMagazines: true
        +showSubscribedDomains: true
        +preferredLanguages: []
        +featuredMagazines: null
        +showProfileSubscriptions: true
        +showProfileFollowings: true
        +markNewComments: false
        +notifyOnNewEntry: false
        +notifyOnNewEntryReply: false
        +notifyOnNewEntryCommentReply: false
        +notifyOnNewPost: false
        +notifyOnNewPostReply: false
        +notifyOnNewPostCommentReply: false
        +addMentionsEntries: false
        +addMentionsPosts: true
        +isBanned: false
        +isVerified: false
        +isDeleted: false
        +isBot: false
        +spamProtection: true
        +customCss: null
        +ignoreMagazinesCustomCss: false
        +moderatorTokens: Doctrine\ORM\PersistentCollection {#1632 …}
        +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#1406 …}
        +moderatorRequests: Doctrine\ORM\PersistentCollection {#1713 …}
        +entries: Doctrine\ORM\PersistentCollection {#1710 …}
        +entryVotes: Doctrine\ORM\PersistentCollection {#1742 …}
        +entryComments: Doctrine\ORM\PersistentCollection {#1659 …}
        +entryCommentVotes: Doctrine\ORM\PersistentCollection {#1470 …}
        +posts: Doctrine\ORM\PersistentCollection {#1746 …}
        +postVotes: Doctrine\ORM\PersistentCollection {#1490 …}
        +postComments: Doctrine\ORM\PersistentCollection {#1772 …}
        +postCommentVotes: Doctrine\ORM\PersistentCollection {#1622 …}
        +subscriptions: Doctrine\ORM\PersistentCollection {#1758 …}
        +subscribedDomains: Doctrine\ORM\PersistentCollection {#1450 …}
        +follows: Doctrine\ORM\PersistentCollection {#1422 …}
        +followers: Doctrine\ORM\PersistentCollection {#1660 …}
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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          Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
          \n
          Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
          \n
          Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
          \n
          You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
          """
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        There are really charging curves that should be followed to avoid damaging the cells.\n
        \n
        You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
        \n
        I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
        \n
        [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
        """
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    +body: "My normal lithium battery charger automatically slows its charging speed as battery voltage nears its capacity. I could set it at 1000mah and it will step down to less than 1/10 of that before charging is complete."
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
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        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
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        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
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          Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
          \n
          Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
          \n
          Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
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          You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
          """
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        There are really charging curves that should be followed to avoid damaging the cells.\n
        \n
        You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
        \n
        I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
        \n
        [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
        """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
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        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
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        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
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        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
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        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
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          Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
          \n
          Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
          \n
          Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
          \n
          You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
          """
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        There are really charging curves that should be followed to avoid damaging the cells.\n
        \n
        You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
        \n
        I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
        \n
        [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
        """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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          Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
          \n
          Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
          \n
          Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
          \n
          You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
          """
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        There are really charging curves that should be followed to avoid damaging the cells.\n
        \n
        You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
        \n
        I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
        \n
        [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
        """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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          Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
          \n
          Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
          \n
          Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
          \n
          You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
          """
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        There are really charging curves that should be followed to avoid damaging the cells.\n
        \n
        You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
        \n
        I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
        \n
        [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
        """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
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        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
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        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
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          Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
          \n
          Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
          \n
          Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
          \n
          You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
          """
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      +body: """
        There are really charging curves that should be followed to avoid damaging the cells.\n
        \n
        You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
        \n
        I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
        \n
        [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
        """
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      +slug: "Sanity-check-for-LiFePO4-Charger-Design"
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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          Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
          \n
          Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
          \n
          Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
          \n
          You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
          """
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        There are really charging curves that should be followed to avoid damaging the cells.\n
        \n
        You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
        \n
        I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
        \n
        [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
        """
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    +body: "LFP cells have excellent cycle life anyway (2000+ cycles); is it worth worrying about staying at 95%?"
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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          Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
          \n
          Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
          \n
          Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
          \n
          You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
          """
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        There are really charging curves that should be followed to avoid damaging the cells.\n
        \n
        You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
        \n
        I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
        \n
        [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
        """
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    +body: "LFP cells have excellent cycle life anyway (2000+ cycles); is it worth worrying about staying at 95%?"
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    +editedAt: null
    +createdAt: DateTimeImmutable @1701443160 {#4315
      date: 2023-12-01 16:06:00.0 +01:00
    }
  }
  +showMagazineName: false
  +showEntryTitle: false
  +showNested: true
  +level: 3
  +canSeeTrash: false
  +dateAsUrl: false
  -requestStack: Symfony\Component\HttpFoundation\RequestStack {#1328 …}
  -authorizationChecker: Symfony\Component\Security\Core\Authorization\AuthorizationChecker {#931 …}
}
user_inline App\Twig\Components\UserInlineComponent 12.0 MiB 2.38 ms
Input props 
[
  "user" => Proxies\__CG__\App\Entity\User {#4317
    +avatar: null
    +cover: null
    +email: "HewlettHackard@lemmy.ca"
    +username: "@HewlettHackard@lemmy.ca"
    +roles: []
    +followersCount: 0
    +homepage: "front"
    +about: null
    +lastActive: DateTime @1729170753 {#10986
      date: 2024-10-17 15:12:33.0 +02:00
    }
    +markedForDeletionAt: null
    +fields: null
    +oauthGithubId: null
    +oauthGoogleId: null
    +oauthFacebookId: null
    +oauthKeycloakId: null
    +hideAdult: true
    +showSubscribedUsers: true
    +showSubscribedMagazines: true
    +showSubscribedDomains: true
    +preferredLanguages: []
    +featuredMagazines: null
    +showProfileSubscriptions: true
    +showProfileFollowings: true
    +markNewComments: false
    +notifyOnNewEntry: false
    +notifyOnNewEntryReply: false
    +notifyOnNewEntryCommentReply: false
    +notifyOnNewPost: false
    +notifyOnNewPostReply: false
    +notifyOnNewPostCommentReply: false
    +addMentionsEntries: false
    +addMentionsPosts: true
    +isBanned: false
    +isVerified: false
    +isDeleted: false
    +isBot: false
    +spamProtection: true
    +customCss: null
    +ignoreMagazinesCustomCss: false
    +moderatorTokens: Doctrine\ORM\PersistentCollection {#10991 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#10994 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#10996 …}
    +entries: Doctrine\ORM\PersistentCollection {#10998 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#11000 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#11002 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#11004 …}
    +posts: Doctrine\ORM\PersistentCollection {#11006 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#11008 …}
    +postComments: Doctrine\ORM\PersistentCollection {#11010 …}
    +postCommentVotes: Doctrine\ORM\PersistentCollection {#11012 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#11014 …}
    +subscribedDomains: Doctrine\ORM\PersistentCollection {#11016 …}
    +follows: Doctrine\ORM\PersistentCollection {#11018 …}
    +followers: Doctrine\ORM\PersistentCollection {#11020 …}
    +blocks: Doctrine\ORM\PersistentCollection {#11022 …}
    +blockers: Doctrine\ORM\PersistentCollection {#11024 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#11026 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#11028 …}
    +reports: Doctrine\ORM\PersistentCollection {#11030 …}
    +favourites: Doctrine\ORM\PersistentCollection {#11032 …}
    +violations: Doctrine\ORM\PersistentCollection {#11034 …}
    +notifications: Doctrine\ORM\PersistentCollection {#11036 …}
    +awards: Doctrine\ORM\PersistentCollection {#11038 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#11040 …}
    +categories: Doctrine\ORM\PersistentCollection {#11042 …}
    -id: 5708
    -password: "$2y$13$uYbHZw22lOPlXqaa5mL5TO2OsA/t7Bd6yN4/EahwJ8rrf.1NPVRge"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#11044 …}
    +apId: "HewlettHackard@lemmy.ca"
    +apProfileId: "https://lemmy.ca/u/HewlettHackard"
    +apPublicUrl: "https://lemmy.ca/u/HewlettHackard"
    +apFollowersUrl: null
    +apInboxUrl: "https://lemmy.ca/inbox"
    +apDomain: "lemmy.ca"
    +apPreferredUsername: "HewlettHackard"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: false
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1719581228 {#10983
      date: 2024-06-28 15:27:08.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1687226897 {#10985
      date: 2023-06-20 04:08:17.0 +02:00
    }
    +__isInitialized__: true
     …2
  }
  "showAvatar" => false
]
Attributes 
[]
Component 
App\Twig\Components\UserInlineComponent {#10946
  +user: Proxies\__CG__\App\Entity\User {#4317
    +avatar: null
    +cover: null
    +email: "HewlettHackard@lemmy.ca"
    +username: "@HewlettHackard@lemmy.ca"
    +roles: []
    +followersCount: 0
    +homepage: "front"
    +about: null
    +lastActive: DateTime @1729170753 {#10986
      date: 2024-10-17 15:12:33.0 +02:00
    }
    +markedForDeletionAt: null
    +fields: null
    +oauthGithubId: null
    +oauthGoogleId: null
    +oauthFacebookId: null
    +oauthKeycloakId: null
    +hideAdult: true
    +showSubscribedUsers: true
    +showSubscribedMagazines: true
    +showSubscribedDomains: true
    +preferredLanguages: []
    +featuredMagazines: null
    +showProfileSubscriptions: true
    +showProfileFollowings: true
    +markNewComments: false
    +notifyOnNewEntry: false
    +notifyOnNewEntryReply: false
    +notifyOnNewEntryCommentReply: false
    +notifyOnNewPost: false
    +notifyOnNewPostReply: false
    +notifyOnNewPostCommentReply: false
    +addMentionsEntries: false
    +addMentionsPosts: true
    +isBanned: false
    +isVerified: false
    +isDeleted: false
    +isBot: false
    +spamProtection: true
    +customCss: null
    +ignoreMagazinesCustomCss: false
    +moderatorTokens: Doctrine\ORM\PersistentCollection {#10991 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#10994 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#10996 …}
    +entries: Doctrine\ORM\PersistentCollection {#10998 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#11000 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#11002 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#11004 …}
    +posts: Doctrine\ORM\PersistentCollection {#11006 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#11008 …}
    +postComments: Doctrine\ORM\PersistentCollection {#11010 …}
    +postCommentVotes: Doctrine\ORM\PersistentCollection {#11012 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#11014 …}
    +subscribedDomains: Doctrine\ORM\PersistentCollection {#11016 …}
    +follows: Doctrine\ORM\PersistentCollection {#11018 …}
    +followers: Doctrine\ORM\PersistentCollection {#11020 …}
    +blocks: Doctrine\ORM\PersistentCollection {#11022 …}
    +blockers: Doctrine\ORM\PersistentCollection {#11024 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#11026 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#11028 …}
    +reports: Doctrine\ORM\PersistentCollection {#11030 …}
    +favourites: Doctrine\ORM\PersistentCollection {#11032 …}
    +violations: Doctrine\ORM\PersistentCollection {#11034 …}
    +notifications: Doctrine\ORM\PersistentCollection {#11036 …}
    +awards: Doctrine\ORM\PersistentCollection {#11038 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#11040 …}
    +categories: Doctrine\ORM\PersistentCollection {#11042 …}
    -id: 5708
    -password: "$2y$13$uYbHZw22lOPlXqaa5mL5TO2OsA/t7Bd6yN4/EahwJ8rrf.1NPVRge"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#11044 …}
    +apId: "HewlettHackard@lemmy.ca"
    +apProfileId: "https://lemmy.ca/u/HewlettHackard"
    +apPublicUrl: "https://lemmy.ca/u/HewlettHackard"
    +apFollowersUrl: null
    +apInboxUrl: "https://lemmy.ca/inbox"
    +apDomain: "lemmy.ca"
    +apPreferredUsername: "HewlettHackard"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: false
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1719581228 {#10983
      date: 2024-06-28 15:27:08.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1687226897 {#10985
      date: 2023-06-20 04:08:17.0 +02:00
    }
    +__isInitialized__: true
     …2
  }
  +showAvatar: false
}
date App\Twig\Components\DateComponent 12.0 MiB 0.14 ms
Input props 
[
  "date" => DateTimeImmutable @1701443160 {#4315
    date: 2023-12-01 16:06:00.0 +01:00
  }
]
Attributes 
[]
Component 
App\Twig\Components\DateComponent {#11064
  +date: DateTimeImmutable @1701443160 {#4315
    date: 2023-12-01 16:06:00.0 +01:00
  }
}
date_edited App\Twig\Components\DateEditedComponent 12.0 MiB 0.12 ms
Input props 
[
  "createdAt" => DateTimeImmutable @1701443160 {#4315
    date: 2023-12-01 16:06:00.0 +01:00
  }
  "editedAt" => null
]
Attributes 
[]
Component 
App\Twig\Components\DateEditedComponent {#11118
  +createdAt: DateTimeImmutable @1701443160 {#4315
    date: 2023-12-01 16:06:00.0 +01:00
  }
  +editedAt: null
}
user_avatar App\Twig\Components\UserAvatarComponent 12.0 MiB 0.13 ms
Input props 
[
  "user" => Proxies\__CG__\App\Entity\User {#4317
    +avatar: null
    +cover: null
    +email: "HewlettHackard@lemmy.ca"
    +username: "@HewlettHackard@lemmy.ca"
    +roles: []
    +followersCount: 0
    +homepage: "front"
    +about: null
    +lastActive: DateTime @1729170753 {#10986
      date: 2024-10-17 15:12:33.0 +02:00
    }
    +markedForDeletionAt: null
    +fields: null
    +oauthGithubId: null
    +oauthGoogleId: null
    +oauthFacebookId: null
    +oauthKeycloakId: null
    +hideAdult: true
    +showSubscribedUsers: true
    +showSubscribedMagazines: true
    +showSubscribedDomains: true
    +preferredLanguages: []
    +featuredMagazines: null
    +showProfileSubscriptions: true
    +showProfileFollowings: true
    +markNewComments: false
    +notifyOnNewEntry: false
    +notifyOnNewEntryReply: false
    +notifyOnNewEntryCommentReply: false
    +notifyOnNewPost: false
    +notifyOnNewPostReply: false
    +notifyOnNewPostCommentReply: false
    +addMentionsEntries: false
    +addMentionsPosts: true
    +isBanned: false
    +isVerified: false
    +isDeleted: false
    +isBot: false
    +spamProtection: true
    +customCss: null
    +ignoreMagazinesCustomCss: false
    +moderatorTokens: Doctrine\ORM\PersistentCollection {#10991 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#10994 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#10996 …}
    +entries: Doctrine\ORM\PersistentCollection {#10998 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#11000 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#11002 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#11004 …}
    +posts: Doctrine\ORM\PersistentCollection {#11006 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#11008 …}
    +postComments: Doctrine\ORM\PersistentCollection {#11010 …}
    +postCommentVotes: Doctrine\ORM\PersistentCollection {#11012 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#11014 …}
    +subscribedDomains: Doctrine\ORM\PersistentCollection {#11016 …}
    +follows: Doctrine\ORM\PersistentCollection {#11018 …}
    +followers: Doctrine\ORM\PersistentCollection {#11020 …}
    +blocks: Doctrine\ORM\PersistentCollection {#11022 …}
    +blockers: Doctrine\ORM\PersistentCollection {#11024 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#11026 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#11028 …}
    +reports: Doctrine\ORM\PersistentCollection {#11030 …}
    +favourites: Doctrine\ORM\PersistentCollection {#11032 …}
    +violations: Doctrine\ORM\PersistentCollection {#11034 …}
    +notifications: Doctrine\ORM\PersistentCollection {#11036 …}
    +awards: Doctrine\ORM\PersistentCollection {#11038 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#11040 …}
    +categories: Doctrine\ORM\PersistentCollection {#11042 …}
    -id: 5708
    -password: "$2y$13$uYbHZw22lOPlXqaa5mL5TO2OsA/t7Bd6yN4/EahwJ8rrf.1NPVRge"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#11044 …}
    +apId: "HewlettHackard@lemmy.ca"
    +apProfileId: "https://lemmy.ca/u/HewlettHackard"
    +apPublicUrl: "https://lemmy.ca/u/HewlettHackard"
    +apFollowersUrl: null
    +apInboxUrl: "https://lemmy.ca/inbox"
    +apDomain: "lemmy.ca"
    +apPreferredUsername: "HewlettHackard"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: false
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1719581228 {#10983
      date: 2024-06-28 15:27:08.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1687226897 {#10985
      date: 2023-06-20 04:08:17.0 +02:00
    }
    +__isInitialized__: true
     …2
  }
  "width" => 40
  "height" => 40
  "asLink" => true
]
Attributes 
[]
Component 
App\Twig\Components\UserAvatarComponent {#11172
  +width: 40
  +height: 40
  +user: Proxies\__CG__\App\Entity\User {#4317
    +avatar: null
    +cover: null
    +email: "HewlettHackard@lemmy.ca"
    +username: "@HewlettHackard@lemmy.ca"
    +roles: []
    +followersCount: 0
    +homepage: "front"
    +about: null
    +lastActive: DateTime @1729170753 {#10986
      date: 2024-10-17 15:12:33.0 +02:00
    }
    +markedForDeletionAt: null
    +fields: null
    +oauthGithubId: null
    +oauthGoogleId: null
    +oauthFacebookId: null
    +oauthKeycloakId: null
    +hideAdult: true
    +showSubscribedUsers: true
    +showSubscribedMagazines: true
    +showSubscribedDomains: true
    +preferredLanguages: []
    +featuredMagazines: null
    +showProfileSubscriptions: true
    +showProfileFollowings: true
    +markNewComments: false
    +notifyOnNewEntry: false
    +notifyOnNewEntryReply: false
    +notifyOnNewEntryCommentReply: false
    +notifyOnNewPost: false
    +notifyOnNewPostReply: false
    +notifyOnNewPostCommentReply: false
    +addMentionsEntries: false
    +addMentionsPosts: true
    +isBanned: false
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    +isDeleted: false
    +isBot: false
    +spamProtection: true
    +customCss: null
    +ignoreMagazinesCustomCss: false
    +moderatorTokens: Doctrine\ORM\PersistentCollection {#10991 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#10994 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#10996 …}
    +entries: Doctrine\ORM\PersistentCollection {#10998 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#11000 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#11002 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#11004 …}
    +posts: Doctrine\ORM\PersistentCollection {#11006 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#11008 …}
    +postComments: Doctrine\ORM\PersistentCollection {#11010 …}
    +postCommentVotes: Doctrine\ORM\PersistentCollection {#11012 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#11014 …}
    +subscribedDomains: Doctrine\ORM\PersistentCollection {#11016 …}
    +follows: Doctrine\ORM\PersistentCollection {#11018 …}
    +followers: Doctrine\ORM\PersistentCollection {#11020 …}
    +blocks: Doctrine\ORM\PersistentCollection {#11022 …}
    +blockers: Doctrine\ORM\PersistentCollection {#11024 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#11026 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#11028 …}
    +reports: Doctrine\ORM\PersistentCollection {#11030 …}
    +favourites: Doctrine\ORM\PersistentCollection {#11032 …}
    +violations: Doctrine\ORM\PersistentCollection {#11034 …}
    +notifications: Doctrine\ORM\PersistentCollection {#11036 …}
    +awards: Doctrine\ORM\PersistentCollection {#11038 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#11040 …}
    +categories: Doctrine\ORM\PersistentCollection {#11042 …}
    -id: 5708
    -password: "$2y$13$uYbHZw22lOPlXqaa5mL5TO2OsA/t7Bd6yN4/EahwJ8rrf.1NPVRge"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#11044 …}
    +apId: "HewlettHackard@lemmy.ca"
    +apProfileId: "https://lemmy.ca/u/HewlettHackard"
    +apPublicUrl: "https://lemmy.ca/u/HewlettHackard"
    +apFollowersUrl: null
    +apInboxUrl: "https://lemmy.ca/inbox"
    +apDomain: "lemmy.ca"
    +apPreferredUsername: "HewlettHackard"
    +apDiscoverable: true
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    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1719581228 {#10983
      date: 2024-06-28 15:27:08.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1687226897 {#10985
      date: 2023-06-20 04:08:17.0 +02:00
    }
    +__isInitialized__: true
     …2
  }
  +asLink: true
}
vote App\Twig\Components\VoteComponent 12.0 MiB 0.52 ms
Input props 
[
  "subject" => App\Entity\EntryComment {#4316
    +user: Proxies\__CG__\App\Entity\User {#4317
      +avatar: null
      +cover: null
      +email: "HewlettHackard@lemmy.ca"
      +username: "@HewlettHackard@lemmy.ca"
      +roles: []
      +followersCount: 0
      +homepage: "front"
      +about: null
      +lastActive: DateTime @1729170753 {#10986
        date: 2024-10-17 15:12:33.0 +02:00
      }
      +markedForDeletionAt: null
      +fields: null
      +oauthGithubId: null
      +oauthGoogleId: null
      +oauthFacebookId: null
      +oauthKeycloakId: null
      +hideAdult: true
      +showSubscribedUsers: true
      +showSubscribedMagazines: true
      +showSubscribedDomains: true
      +preferredLanguages: []
      +featuredMagazines: null
      +showProfileSubscriptions: true
      +showProfileFollowings: true
      +markNewComments: false
      +notifyOnNewEntry: false
      +notifyOnNewEntryReply: false
      +notifyOnNewEntryCommentReply: false
      +notifyOnNewPost: false
      +notifyOnNewPostReply: false
      +notifyOnNewPostCommentReply: false
      +addMentionsEntries: false
      +addMentionsPosts: true
      +isBanned: false
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      +isDeleted: false
      +isBot: false
      +spamProtection: true
      +customCss: null
      +ignoreMagazinesCustomCss: false
      +moderatorTokens: Doctrine\ORM\PersistentCollection {#10991 …}
      +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#10994 …}
      +moderatorRequests: Doctrine\ORM\PersistentCollection {#10996 …}
      +entries: Doctrine\ORM\PersistentCollection {#10998 …}
      +entryVotes: Doctrine\ORM\PersistentCollection {#11000 …}
      +entryComments: Doctrine\ORM\PersistentCollection {#11002 …}
      +entryCommentVotes: Doctrine\ORM\PersistentCollection {#11004 …}
      +posts: Doctrine\ORM\PersistentCollection {#11006 …}
      +postVotes: Doctrine\ORM\PersistentCollection {#11008 …}
      +postComments: Doctrine\ORM\PersistentCollection {#11010 …}
      +postCommentVotes: Doctrine\ORM\PersistentCollection {#11012 …}
      +subscriptions: Doctrine\ORM\PersistentCollection {#11014 …}
      +subscribedDomains: Doctrine\ORM\PersistentCollection {#11016 …}
      +follows: Doctrine\ORM\PersistentCollection {#11018 …}
      +followers: Doctrine\ORM\PersistentCollection {#11020 …}
      +blocks: Doctrine\ORM\PersistentCollection {#11022 …}
      +blockers: Doctrine\ORM\PersistentCollection {#11024 …}
      +blockedMagazines: Doctrine\ORM\PersistentCollection {#11026 …}
      +blockedDomains: Doctrine\ORM\PersistentCollection {#11028 …}
      +reports: Doctrine\ORM\PersistentCollection {#11030 …}
      +favourites: Doctrine\ORM\PersistentCollection {#11032 …}
      +violations: Doctrine\ORM\PersistentCollection {#11034 …}
      +notifications: Doctrine\ORM\PersistentCollection {#11036 …}
      +awards: Doctrine\ORM\PersistentCollection {#11038 …}
      +subscribedCategories: Doctrine\ORM\PersistentCollection {#11040 …}
      +categories: Doctrine\ORM\PersistentCollection {#11042 …}
      -id: 5708
      -password: "$2y$13$uYbHZw22lOPlXqaa5mL5TO2OsA/t7Bd6yN4/EahwJ8rrf.1NPVRge"
      -totpSecret: null
      -totpBackupCodes: []
      -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#11044 …}
      +apId: "HewlettHackard@lemmy.ca"
      +apProfileId: "https://lemmy.ca/u/HewlettHackard"
      +apPublicUrl: "https://lemmy.ca/u/HewlettHackard"
      +apFollowersUrl: null
      +apInboxUrl: "https://lemmy.ca/inbox"
      +apDomain: "lemmy.ca"
      +apPreferredUsername: "HewlettHackard"
      +apDiscoverable: true
      +apManuallyApprovesFollowers: false
      +privateKey: null
      +publicKey: null
      +apFetchedAt: DateTime @1719581228 {#10983
        date: 2024-06-28 15:27:08.0 +02:00
      }
      +apDeletedAt: null
      +apTimeoutAt: null
      +visibility: "visible             "
      +createdAt: DateTimeImmutable @1687226897 {#10985
        date: 2023-06-20 04:08:17.0 +02:00
      }
      +__isInitialized__: true
       …2
    }
    +entry: App\Entity\Entry {#2388
      +user: Proxies\__CG__\App\Entity\User {#1943
        +avatar: null
        +cover: null
        +email: "Saigonauticon@voltage.vn"
        +username: "@Saigonauticon@voltage.vn"
        +roles: []
        +followersCount: 0
        +homepage: "front"
        +about: null
        +lastActive: DateTime @1703981706 {#1516
          date: 2023-12-31 01:15:06.0 +01:00
        }
        +markedForDeletionAt: null
        +fields: null
        +oauthGithubId: null
        +oauthGoogleId: null
        +oauthFacebookId: null
        +oauthKeycloakId: null
        +hideAdult: true
        +showSubscribedUsers: true
        +showSubscribedMagazines: true
        +showSubscribedDomains: true
        +preferredLanguages: []
        +featuredMagazines: null
        +showProfileSubscriptions: true
        +showProfileFollowings: true
        +markNewComments: false
        +notifyOnNewEntry: false
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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          Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
          \n
          Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
          \n
          Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
          \n
          You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
          """
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        There are really charging curves that should be followed to avoid damaging the cells.\n
        \n
        You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
        \n
        I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
        \n
        [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
        """
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    +body: "LFP cells have excellent cycle life anyway (2000+ cycles); is it worth worrying about staying at 95%?"
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          Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
          \n
          Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
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          Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
          \n
          You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
          """
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        There are really charging curves that should be followed to avoid damaging the cells.\n
        \n
        You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
        \n
        I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
        \n
        [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
        """
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    +body: "LFP cells have excellent cycle life anyway (2000+ cycles); is it worth worrying about staying at 95%?"
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
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        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
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        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
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        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
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        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
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          Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
          \n
          Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
          \n
          Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
          \n
          You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
          """
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        There are really charging curves that should be followed to avoid damaging the cells.\n
        \n
        You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
        \n
        I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
        \n
        [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
        """
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    +body: "LFP cells have excellent cycle life anyway (2000+ cycles); is it worth worrying about staying at 95%?"
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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          Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
          \n
          Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
          \n
          Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
          \n
          You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
          """
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        There are really charging curves that should be followed to avoid damaging the cells.\n
        \n
        You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
        \n
        I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
        \n
        [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
        """
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    +body: "LFP cells have excellent cycle life anyway (2000+ cycles); is it worth worrying about staying at 95%?"
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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          Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
          \n
          Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
          \n
          Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
          \n
          You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
          """
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        There are really charging curves that should be followed to avoid damaging the cells.\n
        \n
        You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
        \n
        I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
        \n
        [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
        """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
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        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
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          Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
          \n
          Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
          \n
          Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
          \n
          You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
          """
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      +body: """
        There are really charging curves that should be followed to avoid damaging the cells.\n
        \n
        You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
        \n
        I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
        \n
        [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
        """
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    +body: "LFP cells have excellent cycle life anyway (2000+ cycles); is it worth worrying about staying at 95%?"
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      +slug: "Sanity-check-for-LiFePO4-Charger-Design"
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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            Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
            \n
            Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
            \n
            Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
            \n
            You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
            """
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          There are really charging curves that should be followed to avoid damaging the cells.\n
          \n
          You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
          \n
          I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
          \n
          [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
          """
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      +body: "LFP cells have excellent cycle life anyway (2000+ cycles); is it worth worrying about staying at 95%?"
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    +body: "It’s just that it’s really tricky to charge the final bit because the middle 80% is such a flat voltage curve. They have a 1000x life when they’re taken care of."
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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            Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
            \n
            Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
            \n
            Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
            \n
            You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
            """
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          There are really charging curves that should be followed to avoid damaging the cells.\n
          \n
          You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
          \n
          I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
          \n
          [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
          """
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        +createdAt: DateTimeImmutable @1701353331 {#4246
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      }
      +root: App\Entity\EntryComment {#4149}
      +body: "LFP cells have excellent cycle life anyway (2000+ cycles); is it worth worrying about staying at 95%?"
      +lang: "en"
      +isAdult: false
      +favouriteCount: 1
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      +ip: null
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        "@ignotum@lemmy.world"
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      +children: Doctrine\ORM\PersistentCollection {#4318 …}
      +nested: Doctrine\ORM\PersistentCollection {#4320 …}
      +votes: Doctrine\ORM\PersistentCollection {#4322 …}
      +reports: Doctrine\ORM\PersistentCollection {#4324 …}
      +favourites: Doctrine\ORM\PersistentCollection {#4326 …}
      +notifications: Doctrine\ORM\PersistentCollection {#4328 …}
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      -bodyTs: "'2000':8 '95':17 'anyway':7 'cell':2 'cycl':5,9 'excel':4 'lfp':1 'life':6 'stay':15 'worri':13 'worth':12"
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      +createdAt: DateTimeImmutable @1701443160 {#4315
        date: 2023-12-01 16:06:00.0 +01:00
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    }
    +root: App\Entity\EntryComment {#4149}
    +body: "It’s just that it’s really tricky to charge the final bit because the middle 80% is such a flat voltage curve. They have a 1000x life when they’re taken care of."
    +lang: "en"
    +isAdult: false
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    +lastActive: DateTime @1701452810 {#4387
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    +ip: null
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      "@ignotum@lemmy.world"
      "@nilloc@discuss.tchncs.de"
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    +children: Doctrine\ORM\PersistentCollection {#4382 …}
    +nested: Doctrine\ORM\PersistentCollection {#4377 …}
    +votes: Doctrine\ORM\PersistentCollection {#4381 …}
    +reports: Doctrine\ORM\PersistentCollection {#4391 …}
    +favourites: Doctrine\ORM\PersistentCollection {#4393 …}
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      date: 2023-12-01 18:46:50.0 +01:00
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  +showMagazineName: false
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  +showNested: true
  +level: 4
  +canSeeTrash: false
  +dateAsUrl: false
  -requestStack: Symfony\Component\HttpFoundation\RequestStack {#1328 …}
  -authorizationChecker: Symfony\Component\Security\Core\Authorization\AuthorizationChecker {#931 …}
}
user_inline App\Twig\Components\UserInlineComponent 12.0 MiB 0.13 ms
Input props 
[
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    +avatar: null
    +cover: null
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    +roles: []
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    +about: null
    +lastActive: DateTime @1729522216 {#9575
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    +notifyOnNewPostReply: false
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    +isBot: false
    +spamProtection: true
    +customCss: null
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    +moderatorTokens: Doctrine\ORM\PersistentCollection {#9580 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#9583 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#9585 …}
    +entries: Doctrine\ORM\PersistentCollection {#9587 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#9589 …}
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]
Attributes 
[]
Component 
App\Twig\Components\UserInlineComponent {#11638
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    +customCss: null
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    +moderatorTokens: Doctrine\ORM\PersistentCollection {#9580 …}
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date App\Twig\Components\DateComponent 12.0 MiB 0.13 ms
Input props 
[
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    date: 2023-12-01 18:46:50.0 +01:00
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]
Attributes 
[]
Component 
App\Twig\Components\DateComponent {#11693
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    date: 2023-12-01 18:46:50.0 +01:00
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}
date_edited App\Twig\Components\DateEditedComponent 12.0 MiB 0.08 ms
Input props 
[
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    date: 2023-12-01 18:46:50.0 +01:00
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  "editedAt" => null
]
Attributes 
[]
Component 
App\Twig\Components\DateEditedComponent {#11747
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    date: 2023-12-01 18:46:50.0 +01:00
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  +editedAt: null
}
user_avatar App\Twig\Components\UserAvatarComponent 12.0 MiB 0.23 ms
Input props 
[
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    +avatar: null
    +cover: null
    +email: "nilloc@discuss.tchncs.de"
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     …2
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  "width" => 40
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  "asLink" => true
]
Attributes 
[]
Component 
App\Twig\Components\UserAvatarComponent {#11801
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vote App\Twig\Components\VoteComponent 12.0 MiB 0.50 ms
Input props 
[
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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            Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
            \n
            Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
            \n
            Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
            \n
            You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
            """
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          There are really charging curves that should be followed to avoid damaging the cells.\n
          \n
          You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
          \n
          I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
          \n
          [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
          """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
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        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
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        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
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        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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            Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
            \n
            Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
            \n
            Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
            \n
            You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
            """
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          There are really charging curves that should be followed to avoid damaging the cells.\n
          \n
          You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
          \n
          I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
          \n
          [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
          """
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      +body: "LFP cells have excellent cycle life anyway (2000+ cycles); is it worth worrying about staying at 95%?"
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    +body: "It’s just that it’s really tricky to charge the final bit because the middle 80% is such a flat voltage curve. They have a 1000x life when they’re taken care of."
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      +slug: "Sanity-check-for-LiFePO4-Charger-Design"
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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          +body: """
            Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
            \n
            Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
            \n
            Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
            \n
            You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
            """
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          There are really charging curves that should be followed to avoid damaging the cells.\n
          \n
          You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
          \n
          I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
          \n
          [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
          """
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      +body: "LFP cells have excellent cycle life anyway (2000+ cycles); is it worth worrying about staying at 95%?"
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    +body: "It’s just that it’s really tricky to charge the final bit because the middle 80% is such a flat voltage curve. They have a 1000x life when they’re taken care of."
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            Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
            \n
            Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
            \n
            Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
            \n
            You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
            """
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          There are really charging curves that should be followed to avoid damaging the cells.\n
          \n
          You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
          \n
          I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
          \n
          [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
          """
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    +body: "It’s just that it’s really tricky to charge the final bit because the middle 80% is such a flat voltage curve. They have a 1000x life when they’re taken care of."
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
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        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
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        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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            Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
            \n
            Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
            \n
            Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
            \n
            You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
            """
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          There are really charging curves that should be followed to avoid damaging the cells.\n
          \n
          You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
          \n
          I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
          \n
          [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
          """
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      +body: "LFP cells have excellent cycle life anyway (2000+ cycles); is it worth worrying about staying at 95%?"
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    +body: "It’s just that it’s really tricky to charge the final bit because the middle 80% is such a flat voltage curve. They have a 1000x life when they’re taken care of."
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      +slug: "Sanity-check-for-LiFePO4-Charger-Design"
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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          +body: """
            Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
            \n
            Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
            \n
            Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
            \n
            You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
            """
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          There are really charging curves that should be followed to avoid damaging the cells.\n
          \n
          You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
          \n
          I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
          \n
          [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
          """
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      +body: "LFP cells have excellent cycle life anyway (2000+ cycles); is it worth worrying about staying at 95%?"
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entry_comment App\Twig\Components\EntryCommentComponent 14.0 MiB 13.86 ms
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
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        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
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              Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
              \n
              Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
              \n
              Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
              \n
              You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
              """
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            There are really charging curves that should be followed to avoid damaging the cells.\n
            \n
            You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
            \n
            I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
            \n
            [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
            """
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        +body: "LFP cells have excellent cycle life anyway (2000+ cycles); is it worth worrying about staying at 95%?"
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      +body: "It’s just that it’s really tricky to charge the final bit because the middle 80% is such a flat voltage curve. They have a 1000x life when they’re taken care of."
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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              Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
              \n
              Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
              \n
              Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
              \n
              You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
              """
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            There are really charging curves that should be followed to avoid damaging the cells.\n
            \n
            You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
            \n
            I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
            \n
            [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
            """
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          +reports: Doctrine\ORM\PersistentCollection {#4255 …}
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        +children: Doctrine\ORM\PersistentCollection {#4318 …}
        +nested: Doctrine\ORM\PersistentCollection {#4320 …}
        +votes: Doctrine\ORM\PersistentCollection {#4322 …}
        +reports: Doctrine\ORM\PersistentCollection {#4324 …}
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        +notifications: Doctrine\ORM\PersistentCollection {#4328 …}
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      }
      +root: App\Entity\EntryComment {#4149}
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      +lang: "en"
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      +children: Doctrine\ORM\PersistentCollection {#4382 …}
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    }
    +root: App\Entity\EntryComment {#4149}
    +body: "It is in no way tricky. Simply apply a constant voltage."
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    +children: Doctrine\ORM\PersistentCollection {#4404 …}
    +nested: Doctrine\ORM\PersistentCollection {#4401 …}
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  +level: 5
  +canSeeTrash: false
  +dateAsUrl: false
  -requestStack: Symfony\Component\HttpFoundation\RequestStack {#1328 …}
  -authorizationChecker: Symfony\Component\Security\Core\Authorization\AuthorizationChecker {#931 …}
}
user_inline App\Twig\Components\UserInlineComponent 12.0 MiB 0.14 ms
Input props 
[
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    +avatar: null
    +cover: null
    +email: "Eheran@lemmy.world"
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    +roles: []
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    +customCss: null
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Attributes 
[]
Component 
App\Twig\Components\UserInlineComponent {#12267
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date App\Twig\Components\DateComponent 12.0 MiB 0.13 ms
Input props 
[
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    date: 2023-12-09 22:52:45.0 +01:00
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]
Attributes 
[]
Component 
App\Twig\Components\DateComponent {#12322
  +date: DateTimeImmutable @1702158765 {#4410
    date: 2023-12-09 22:52:45.0 +01:00
  }
}
date_edited App\Twig\Components\DateEditedComponent 12.0 MiB 0.09 ms
Input props 
[
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  "editedAt" => null
]
Attributes 
[]
Component 
App\Twig\Components\DateEditedComponent {#12376
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  +editedAt: null
}
user_avatar App\Twig\Components\UserAvatarComponent 12.0 MiB 0.14 ms
Input props 
[
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  "asLink" => true
]
Attributes 
[]
Component 
App\Twig\Components\UserAvatarComponent {#12430
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vote App\Twig\Components\VoteComponent 12.0 MiB 0.54 ms
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              Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
              \n
              Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
              \n
              Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
              \n
              You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
              """
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            There are really charging curves that should be followed to avoid damaging the cells.\n
            \n
            You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
            \n
            I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
            \n
            [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
            """
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        +body: "LFP cells have excellent cycle life anyway (2000+ cycles); is it worth worrying about staying at 95%?"
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      +body: "It’s just that it’s really tricky to charge the final bit because the middle 80% is such a flat voltage curve. They have a 1000x life when they’re taken care of."
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    +body: "It is in no way tricky. Simply apply a constant voltage."
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      +title: "Sanity check for LiFePO4 Charger Design"
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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              Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
              \n
              Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
              \n
              Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
              \n
              You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
              """
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            There are really charging curves that should be followed to avoid damaging the cells.\n
            \n
            You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
            \n
            I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
            \n
            [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
            """
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boost App\Twig\Components\BoostComponent 12.0 MiB 0.77 ms
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
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        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
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        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
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              Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
              \n
              Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
              \n
              Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
              \n
              You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
              """
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            There are really charging curves that should be followed to avoid damaging the cells.\n
            \n
            You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
            \n
            I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
            \n
            [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
            """
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        +body: "LFP cells have excellent cycle life anyway (2000+ cycles); is it worth worrying about staying at 95%?"
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      +body: "It’s just that it’s really tricky to charge the final bit because the middle 80% is such a flat voltage curve. They have a 1000x life when they’re taken care of."
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    +body: "It is in no way tricky. Simply apply a constant voltage."
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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              Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
              \n
              Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
              \n
              Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
              \n
              You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
              """
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            There are really charging curves that should be followed to avoid damaging the cells.\n
            \n
            You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
            \n
            I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
            \n
            [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
            """
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        +body: "LFP cells have excellent cycle life anyway (2000+ cycles); is it worth worrying about staying at 95%?"
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      +body: "It’s just that it’s really tricky to charge the final bit because the middle 80% is such a flat voltage curve. They have a 1000x life when they’re taken care of."
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    +body: "It is in no way tricky. Simply apply a constant voltage."
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
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        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
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        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
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        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
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              Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
              \n
              Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
              \n
              Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
              \n
              You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
              """
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            There are really charging curves that should be followed to avoid damaging the cells.\n
            \n
            You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
            \n
            I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
            \n
            [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
            """
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        +body: "LFP cells have excellent cycle life anyway (2000+ cycles); is it worth worrying about staying at 95%?"
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      +body: "It’s just that it’s really tricky to charge the final bit because the middle 80% is such a flat voltage curve. They have a 1000x life when they’re taken care of."
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    +body: "It is in no way tricky. Simply apply a constant voltage."
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
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              Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
              \n
              Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
              \n
              Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
              \n
              You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
              """
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            There are really charging curves that should be followed to avoid damaging the cells.\n
            \n
            You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
            \n
            I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
            \n
            [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
            """
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        +body: "LFP cells have excellent cycle life anyway (2000+ cycles); is it worth worrying about staying at 95%?"
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      +body: "It’s just that it’s really tricky to charge the final bit because the middle 80% is such a flat voltage curve. They have a 1000x life when they’re taken care of."
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    +body: "It is in no way tricky. Simply apply a constant voltage."
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      +slug: "Sanity-check-for-LiFePO4-Charger-Design"
      +title: "Sanity check for LiFePO4 Charger Design"
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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              +body: """
                Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
                \n
                Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
                \n
                Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
                \n
                You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
                """
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              There are really charging curves that should be followed to avoid damaging the cells.\n
              \n
              You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
              \n
              I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
              \n
              [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
              """
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          +body: "LFP cells have excellent cycle life anyway (2000+ cycles); is it worth worrying about staying at 95%?"
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                Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
                \n
                Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
                \n
                Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
                \n
                You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
                """
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              There are really charging curves that should be followed to avoid damaging the cells.\n
              \n
              You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
              \n
              I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
              \n
              [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
              """
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          +body: "LFP cells have excellent cycle life anyway (2000+ cycles); is it worth worrying about staying at 95%?"
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        +body: "It’s just that it’s really tricky to charge the final bit because the middle 80% is such a flat voltage curve. They have a 1000x life when they’re taken care of."
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      +body: "It is in no way tricky. Simply apply a constant voltage."
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    +postVotes: Doctrine\ORM\PersistentCollection {#9597 …}
    +postComments: Doctrine\ORM\PersistentCollection {#9599 …}
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    +follows: Doctrine\ORM\PersistentCollection {#9607 …}
    +followers: Doctrine\ORM\PersistentCollection {#9609 …}
    +blocks: Doctrine\ORM\PersistentCollection {#9611 …}
    +blockers: Doctrine\ORM\PersistentCollection {#9613 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#9615 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#9617 …}
    +reports: Doctrine\ORM\PersistentCollection {#9619 …}
    +favourites: Doctrine\ORM\PersistentCollection {#9621 …}
    +violations: Doctrine\ORM\PersistentCollection {#9623 …}
    +notifications: Doctrine\ORM\PersistentCollection {#9625 …}
    +awards: Doctrine\ORM\PersistentCollection {#9627 …}
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    +apFollowersUrl: null
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    +privateKey: null
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      date: 2023-07-07 08:32:02.0 +02:00
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  "showAvatar" => false
]
Attributes 
[]
Component 
App\Twig\Components\UserInlineComponent {#12896
  +user: Proxies\__CG__\App\Entity\User {#4248
    +avatar: null
    +cover: null
    +email: "nilloc@discuss.tchncs.de"
    +username: "@nilloc@discuss.tchncs.de"
    +roles: []
    +followersCount: 0
    +homepage: "front"
    +about: null
    +lastActive: DateTime @1729522216 {#9575
      date: 2024-10-21 16:50:16.0 +02:00
    }
    +markedForDeletionAt: null
    +fields: null
    +oauthGithubId: null
    +oauthGoogleId: null
    +oauthFacebookId: null
    +oauthKeycloakId: null
    +hideAdult: true
    +showSubscribedUsers: true
    +showSubscribedMagazines: true
    +showSubscribedDomains: true
    +preferredLanguages: []
    +featuredMagazines: null
    +showProfileSubscriptions: true
    +showProfileFollowings: true
    +markNewComments: false
    +notifyOnNewEntry: false
    +notifyOnNewEntryReply: false
    +notifyOnNewEntryCommentReply: false
    +notifyOnNewPost: false
    +notifyOnNewPostReply: false
    +notifyOnNewPostCommentReply: false
    +addMentionsEntries: false
    +addMentionsPosts: true
    +isBanned: false
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    +isDeleted: false
    +isBot: false
    +spamProtection: true
    +customCss: null
    +ignoreMagazinesCustomCss: false
    +moderatorTokens: Doctrine\ORM\PersistentCollection {#9580 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#9583 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#9585 …}
    +entries: Doctrine\ORM\PersistentCollection {#9587 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#9589 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#9591 …}
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    +posts: Doctrine\ORM\PersistentCollection {#9595 …}
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    +postComments: Doctrine\ORM\PersistentCollection {#9599 …}
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    +follows: Doctrine\ORM\PersistentCollection {#9607 …}
    +followers: Doctrine\ORM\PersistentCollection {#9609 …}
    +blocks: Doctrine\ORM\PersistentCollection {#9611 …}
    +blockers: Doctrine\ORM\PersistentCollection {#9613 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#9615 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#9617 …}
    +reports: Doctrine\ORM\PersistentCollection {#9619 …}
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    +violations: Doctrine\ORM\PersistentCollection {#9623 …}
    +notifications: Doctrine\ORM\PersistentCollection {#9625 …}
    +awards: Doctrine\ORM\PersistentCollection {#9627 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#9629 …}
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    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#9633 …}
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    +apFollowersUrl: null
    +apInboxUrl: "https://discuss.tchncs.de/inbox"
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    +apPreferredUsername: "nilloc"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: false
    +privateKey: null
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    +apFetchedAt: DateTime @1728223342 {#9572
      date: 2024-10-06 16:02:22.0 +02:00
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    +apDeletedAt: null
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    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1688711522 {#9574
      date: 2023-07-07 08:32:02.0 +02:00
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date App\Twig\Components\DateComponent 14.0 MiB 0.14 ms
Input props 
[
  "date" => DateTimeImmutable @1702165552 {#4432
    date: 2023-12-10 00:45:52.0 +01:00
  }
]
Attributes 
[]
Component 
App\Twig\Components\DateComponent {#12951
  +date: DateTimeImmutable @1702165552 {#4432
    date: 2023-12-10 00:45:52.0 +01:00
  }
}
date_edited App\Twig\Components\DateEditedComponent 14.0 MiB 0.09 ms
Input props 
[
  "createdAt" => DateTimeImmutable @1702165552 {#4432
    date: 2023-12-10 00:45:52.0 +01:00
  }
  "editedAt" => null
]
Attributes 
[]
Component 
App\Twig\Components\DateEditedComponent {#13005
  +createdAt: DateTimeImmutable @1702165552 {#4432
    date: 2023-12-10 00:45:52.0 +01:00
  }
  +editedAt: null
}
user_avatar App\Twig\Components\UserAvatarComponent 14.0 MiB 0.13 ms
Input props 
[
  "user" => Proxies\__CG__\App\Entity\User {#4248
    +avatar: null
    +cover: null
    +email: "nilloc@discuss.tchncs.de"
    +username: "@nilloc@discuss.tchncs.de"
    +roles: []
    +followersCount: 0
    +homepage: "front"
    +about: null
    +lastActive: DateTime @1729522216 {#9575
      date: 2024-10-21 16:50:16.0 +02:00
    }
    +markedForDeletionAt: null
    +fields: null
    +oauthGithubId: null
    +oauthGoogleId: null
    +oauthFacebookId: null
    +oauthKeycloakId: null
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    +showSubscribedUsers: true
    +showSubscribedMagazines: true
    +showSubscribedDomains: true
    +preferredLanguages: []
    +featuredMagazines: null
    +showProfileSubscriptions: true
    +showProfileFollowings: true
    +markNewComments: false
    +notifyOnNewEntry: false
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    +isDeleted: false
    +isBot: false
    +spamProtection: true
    +customCss: null
    +ignoreMagazinesCustomCss: false
    +moderatorTokens: Doctrine\ORM\PersistentCollection {#9580 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#9583 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#9585 …}
    +entries: Doctrine\ORM\PersistentCollection {#9587 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#9589 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#9591 …}
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    +postVotes: Doctrine\ORM\PersistentCollection {#9597 …}
    +postComments: Doctrine\ORM\PersistentCollection {#9599 …}
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    +blockers: Doctrine\ORM\PersistentCollection {#9613 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#9615 …}
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    +reports: Doctrine\ORM\PersistentCollection {#9619 …}
    +favourites: Doctrine\ORM\PersistentCollection {#9621 …}
    +violations: Doctrine\ORM\PersistentCollection {#9623 …}
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    +awards: Doctrine\ORM\PersistentCollection {#9627 …}
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    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#9633 …}
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      date: 2023-07-07 08:32:02.0 +02:00
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     …2
  }
  "width" => 40
  "height" => 40
  "asLink" => true
]
Attributes 
[]
Component 
App\Twig\Components\UserAvatarComponent {#13059
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    +avatar: null
    +cover: null
    +email: "nilloc@discuss.tchncs.de"
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    +roles: []
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      date: 2024-10-21 16:50:16.0 +02:00
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    +markedForDeletionAt: null
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    +isDeleted: false
    +isBot: false
    +spamProtection: true
    +customCss: null
    +ignoreMagazinesCustomCss: false
    +moderatorTokens: Doctrine\ORM\PersistentCollection {#9580 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#9583 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#9585 …}
    +entries: Doctrine\ORM\PersistentCollection {#9587 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#9589 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#9591 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#9593 …}
    +posts: Doctrine\ORM\PersistentCollection {#9595 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#9597 …}
    +postComments: Doctrine\ORM\PersistentCollection {#9599 …}
    +postCommentVotes: Doctrine\ORM\PersistentCollection {#9601 …}
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    +subscribedDomains: Doctrine\ORM\PersistentCollection {#9605 …}
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    +blockers: Doctrine\ORM\PersistentCollection {#9613 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#9615 …}
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    +awards: Doctrine\ORM\PersistentCollection {#9627 …}
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vote App\Twig\Components\VoteComponent 14.0 MiB 0.57 ms
Input props 
[
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      +customCss: null
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      +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#9583 …}
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      +entries: Doctrine\ORM\PersistentCollection {#9587 …}
      +entryVotes: Doctrine\ORM\PersistentCollection {#9589 …}
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      +blockers: Doctrine\ORM\PersistentCollection {#9613 …}
      +blockedMagazines: Doctrine\ORM\PersistentCollection {#9615 …}
      +blockedDomains: Doctrine\ORM\PersistentCollection {#9617 …}
      +reports: Doctrine\ORM\PersistentCollection {#9619 …}
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      +awards: Doctrine\ORM\PersistentCollection {#9627 …}
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      -totpSecret: null
      -totpBackupCodes: []
      -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#9633 …}
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      +apDeletedAt: null
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      +visibility: "visible             "
      +createdAt: DateTimeImmutable @1688711522 {#9574
        date: 2023-07-07 08:32:02.0 +02:00
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      +__isInitialized__: true
       …2
    }
    +entry: App\Entity\Entry {#2388
      +user: Proxies\__CG__\App\Entity\User {#1943
        +avatar: null
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        +username: "@Saigonauticon@voltage.vn"
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        +markedForDeletionAt: null
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        +spamProtection: true
        +customCss: null
        +ignoreMagazinesCustomCss: false
        +moderatorTokens: Doctrine\ORM\PersistentCollection {#1632 …}
        +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#1406 …}
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        +entries: Doctrine\ORM\PersistentCollection {#1710 …}
        +entryVotes: Doctrine\ORM\PersistentCollection {#1742 …}
        +entryComments: Doctrine\ORM\PersistentCollection {#1659 …}
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        +subscriptions: Doctrine\ORM\PersistentCollection {#1758 …}
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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                Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
                \n
                Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
                \n
                Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
                \n
                You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
                """
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              There are really charging curves that should be followed to avoid damaging the cells.\n
              \n
              You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
              \n
              I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
              \n
              [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
              """
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                Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
                \n
                Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
                \n
                Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
                \n
                You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
                """
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              There are really charging curves that should be followed to avoid damaging the cells.\n
              \n
              You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
              \n
              I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
              \n
              [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
              """
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          +body: "LFP cells have excellent cycle life anyway (2000+ cycles); is it worth worrying about staying at 95%?"
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        +body: "It’s just that it’s really tricky to charge the final bit because the middle 80% is such a flat voltage curve. They have a 1000x life when they’re taken care of."
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      +body: "It is in no way tricky. Simply apply a constant voltage."
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    +body: "It’s tricky to stop at the right point, because lithium iron only have a very small voltage increase between like 40% and 90% and they ramp up to full voltage right near the limit of their capacity."
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
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        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
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        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
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                Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
                \n
                Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
                \n
                Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
                \n
                You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
                """
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              There are really charging curves that should be followed to avoid damaging the cells.\n
              \n
              You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
              \n
              I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
              \n
              [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
              """
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          +body: "LFP cells have excellent cycle life anyway (2000+ cycles); is it worth worrying about staying at 95%?"
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        +body: "It’s just that it’s really tricky to charge the final bit because the middle 80% is such a flat voltage curve. They have a 1000x life when they’re taken care of."
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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                Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
                \n
                Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
                \n
                Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
                \n
                You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
                """
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              There are really charging curves that should be followed to avoid damaging the cells.\n
              \n
              You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
              \n
              I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
              \n
              [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
              """
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                Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
                \n
                Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
                \n
                Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
                \n
                You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
                """
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              There are really charging curves that should be followed to avoid damaging the cells.\n
              \n
              You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
              \n
              I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
              \n
              [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
              """
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          +body: "LFP cells have excellent cycle life anyway (2000+ cycles); is it worth worrying about staying at 95%?"
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        +body: "It’s just that it’s really tricky to charge the final bit because the middle 80% is such a flat voltage curve. They have a 1000x life when they’re taken care of."
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      +body: "It is in no way tricky. Simply apply a constant voltage."
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    +body: "It’s tricky to stop at the right point, because lithium iron only have a very small voltage increase between like 40% and 90% and they ramp up to full voltage right near the limit of their capacity."
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                Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
                \n
                Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
                \n
                Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
                \n
                You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
                """
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              There are really charging curves that should be followed to avoid damaging the cells.\n
              \n
              You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
              \n
              I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
              \n
              [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
              """
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          +body: "LFP cells have excellent cycle life anyway (2000+ cycles); is it worth worrying about staying at 95%?"
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        +body: "It’s just that it’s really tricky to charge the final bit because the middle 80% is such a flat voltage curve. They have a 1000x life when they’re taken care of."
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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          Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
          \n
          Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
          \n
          Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
          \n
          You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
          """
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        There are really charging curves that should be followed to avoid damaging the cells.\n
        \n
        You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
        \n
        I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
        \n
        [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
        """
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    +body: "What you are talking about is nothing special at all and not following a charging curve. The curve automatically looks the way it does when charging CCCV. Constant Current -> Constant Voltage."
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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          Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
          \n
          Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
          \n
          Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
          \n
          You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
          """
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          date: 2023-11-30 13:19:35.0 +01:00
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      +body: """
        There are really charging curves that should be followed to avoid damaging the cells.\n
        \n
        You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
        \n
        I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
        \n
        [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
        """
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    +body: "What you are talking about is nothing special at all and not following a charging curve. The curve automatically looks the way it does when charging CCCV. Constant Current -> Constant Voltage."
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user_inline App\Twig\Components\UserInlineComponent 14.0 MiB 0.22 ms
Input props 
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Attributes 
[]
Component 
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App\Twig\Components\UserAvatarComponent {#13732
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vote App\Twig\Components\VoteComponent 14.0 MiB 0.54 ms
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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          Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
          \n
          Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
          \n
          Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
          \n
          You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
          """
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        There are really charging curves that should be followed to avoid damaging the cells.\n
        \n
        You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
        \n
        I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
        \n
        [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
        """
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    +body: "What you are talking about is nothing special at all and not following a charging curve. The curve automatically looks the way it does when charging CCCV. Constant Current -> Constant Voltage."
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
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        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
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        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
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        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
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          Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
          \n
          Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
          \n
          Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
          \n
          You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
          """
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        There are really charging curves that should be followed to avoid damaging the cells.\n
        \n
        You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
        \n
        I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
        \n
        [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
        """
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    +body: "What you are talking about is nothing special at all and not following a charging curve. The curve automatically looks the way it does when charging CCCV. Constant Current -> Constant Voltage."
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      +title: "Sanity check for LiFePO4 Charger Design"
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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          Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
          \n
          Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
          \n
          Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
          \n
          You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
          """
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        There are really charging curves that should be followed to avoid damaging the cells.\n
        \n
        You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
        \n
        I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
        \n
        [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
        """
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    +body: "What you are talking about is nothing special at all and not following a charging curve. The curve automatically looks the way it does when charging CCCV. Constant Current -> Constant Voltage."
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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          Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
          \n
          Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
          \n
          Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
          \n
          You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
          """
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        There are really charging curves that should be followed to avoid damaging the cells.\n
        \n
        You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
        \n
        I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
        \n
        [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
        """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
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        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
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          Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
          \n
          Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
          \n
          Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
          \n
          You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
          """
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        There are really charging curves that should be followed to avoid damaging the cells.\n
        \n
        You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
        \n
        I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
        \n
        [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
        """
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    +body: "What you are talking about is nothing special at all and not following a charging curve. The curve automatically looks the way it does when charging CCCV. Constant Current -> Constant Voltage."
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
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        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
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        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
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        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
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        +body: """
          Just based on my experience and knowledge of these batteries, which is not that much really, don’t take any of this as gospel.\n
          \n
          Constant voltage current-limited power supply is probably the easiest way to charge it, a regulator + current limited supply like you mention would be one way of achieving that, will waste a lot of the power and charging speed will be limited by how much heat the regulator is able to dump (which for a typical TO-220 regulator without heatsink is like a watt or two? So you’d have a max charge current of like 0.5-1.0 amp)\n
          \n
          Your current approach probably also works just fine, but i’m not sure how good it is for the batteries in the long run\n
          \n
          You can find charger for sale online though, at least modules that you can solder up to a battery holder or whatever, i would go for one of those if you plan to use these batteries for a longer period of time
          """
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          date: 2023-11-30 13:19:35.0 +01:00
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      +body: """
        There are really charging curves that should be followed to avoid damaging the cells.\n
        \n
        You want to charge up to a certain voltage at a current (related to the battery capacity I believe) and when the cutoff voltage is hit, you switch to constant voltage (the max voltage of the cell) and then slowly drop the amperage as the battery is topped off.\n
        \n
        I’m not sure about your cells, but some LiFe are 95-98% full at 3.45-3.5 volts, but the problem is that the voltage curve is really flat from 40-50% charged up to 95%. So you need really accurate measurement if you want to charge to 95%. The last 3-5% is when the battery ramps up to 3.65v and really is the riskiest part of the charge. It’s also the highest wear part of the battery use, if you can avoid charging it all the way up to that your cells will last much longer.\n
        \n
        [Decent video explaining charge/discharge here](https://youtu.be/uNFIkNtsd1c), though he’s using big LiFe prismatic cells.
        """
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    +body: "What you are talking about is nothing special at all and not following a charging curve. The curve automatically looks the way it does when charging CCCV. Constant Current -> Constant Voltage."
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Component 
App\Twig\Components\SettingsRowEnumComponent {#14240
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[]
Component 
App\Twig\Components\SettingsRowSwitchComponent {#14304
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Component 
App\Twig\Components\SettingsRowSwitchComponent {#9820
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Component 
App\Twig\Components\SettingsRowSwitchComponent {#7899
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Component 
App\Twig\Components\SettingsRowSwitchComponent {#11233
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Component 
App\Twig\Components\SettingsRowSwitchComponent {#13836
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Component 
App\Twig\Components\SettingsRowSwitchComponent {#14379
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Component 
App\Twig\Components\UserSettingsRowSwitchComponent {#14437
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App\Twig\Components\SettingsRowSwitchComponent {#14500
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App\Twig\Components\UserSettingsRowSwitchComponent {#14558
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user_settings_row_switch App\Twig\Components\UserSettingsRowSwitchComponent 14.0 MiB 0.17 ms
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App\Twig\Components\UserSettingsRowSwitchComponent {#14614
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App\Twig\Components\UserSettingsRowSwitchComponent {#14670
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Component 
App\Twig\Components\SettingsRowSwitchComponent {#14726
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settings_row_switch App\Twig\Components\SettingsRowSwitchComponent 14.0 MiB 0.14 ms
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Component 
App\Twig\Components\SettingsRowSwitchComponent {#14782
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App\Twig\Components\SettingsRowSwitchComponent {#14838
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Component 
App\Twig\Components\SettingsRowSwitchComponent {#14894
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Component 
App\Twig\Components\SettingsRowSwitchComponent {#14950
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Input props 
[
  "label" => "Auto media preview"
  "help" => "Automatically expand media previews."
  "settingsKey" => "KBIN_POSTS_SHOW_PREVIEW"
]
Attributes 
[]
Component 
App\Twig\Components\SettingsRowSwitchComponent {#15006
  +label: "Auto media preview"
  +help: "Automatically expand media previews."
  +settingsKey: "KBIN_POSTS_SHOW_PREVIEW"
  +defaultValue: false
  +reloadRequired: true
}
settings_row_switch App\Twig\Components\SettingsRowSwitchComponent 14.0 MiB 0.14 ms
Input props 
[
  "label" => "Show users’ avatars"
  "settingsKey" => "KBIN_POSTS_SHOW_USERS_AVATARS"
  "defaultValue" => true
]
Attributes 
[]
Component 
App\Twig\Components\SettingsRowSwitchComponent {#15062
  +label: "Show users’ avatars"
  +help: ""
  +settingsKey: "KBIN_POSTS_SHOW_USERS_AVATARS"
  +defaultValue: true
  +reloadRequired: true
}
settings_row_enum App\Twig\Components\SettingsRowEnumComponent 14.0 MiB 0.16 ms
Input props 
[
  "label" => "Comment reply position"
  "help" => "Display the comment reply form either at the top or bottom of the page. When 'infinite scroll' is enabled the position will always appear at the top."
  "settingsKey" => "KBIN_COMMENTS_REPLY_POSITION"
  "values" => [
    [
      "name" => "top"
      "value" => "TOP"
    ]
    [
      "name" => "bottom"
      "value" => "BOTTOM"
    ]
  ]
  "defaultValue" => "TOP"
]
Attributes 
[]
Component 
App\Twig\Components\SettingsRowEnumComponent {#15118
  +label: "Comment reply position"
  +help: "Display the comment reply form either at the top or bottom of the page. When 'infinite scroll' is enabled the position will always appear at the top."
  +settingsKey: "KBIN_COMMENTS_REPLY_POSITION"
  +values: [
    [
      "name" => "top"
      "value" => "TOP"
    ]
    [
      "name" => "bottom"
      "value" => "BOTTOM"
    ]
  ]
  +defaultValue: "TOP"
  +reloadRequired: true
}
settings_row_switch App\Twig\Components\SettingsRowSwitchComponent 14.0 MiB 0.15 ms
Input props 
[
  "label" => "Show Comment Avatars"
  "help" => "Display/hide user avatars when viewing comments on a single thread or post."
  "settingsKey" => "KBIN_COMMENTS_SHOW_USER_AVATAR"
  "defaultValue" => true
]
Attributes 
[]
Component 
App\Twig\Components\SettingsRowSwitchComponent {#15176
  +label: "Show Comment Avatars"
  +help: "Display/hide user avatars when viewing comments on a single thread or post."
  +settingsKey: "KBIN_COMMENTS_SHOW_USER_AVATAR"
  +defaultValue: true
  +reloadRequired: true
}
user_actions App\Twig\Components\UserActionsComponent 14.0 MiB 0.45 ms
Input props 
[
  "user" => Proxies\__CG__\App\Entity\User {#1943
    +avatar: null
    +cover: null
    +email: "Saigonauticon@voltage.vn"
    +username: "@Saigonauticon@voltage.vn"
    +roles: []
    +followersCount: 0
    +homepage: "front"
    +about: null
    +lastActive: DateTime @1703981706 {#1516
      date: 2023-12-31 01:15:06.0 +01:00
    }
    +markedForDeletionAt: null
    +fields: null
    +oauthGithubId: null
    +oauthGoogleId: null
    +oauthFacebookId: null
    +oauthKeycloakId: null
    +hideAdult: true
    +showSubscribedUsers: true
    +showSubscribedMagazines: true
    +showSubscribedDomains: true
    +preferredLanguages: []
    +featuredMagazines: null
    +showProfileSubscriptions: true
    +showProfileFollowings: true
    +markNewComments: false
    +notifyOnNewEntry: false
    +notifyOnNewEntryReply: false
    +notifyOnNewEntryCommentReply: false
    +notifyOnNewPost: false
    +notifyOnNewPostReply: false
    +notifyOnNewPostCommentReply: false
    +addMentionsEntries: false
    +addMentionsPosts: true
    +isBanned: false
    +isVerified: false
    +isDeleted: false
    +isBot: false
    +spamProtection: true
    +customCss: null
    +ignoreMagazinesCustomCss: false
    +moderatorTokens: Doctrine\ORM\PersistentCollection {#1632 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#1406 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#1713 …}
    +entries: Doctrine\ORM\PersistentCollection {#1710 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#1742 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#1659 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#1470 …}
    +posts: Doctrine\ORM\PersistentCollection {#1746 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#1490 …}
    +postComments: Doctrine\ORM\PersistentCollection {#1772 …}
    +postCommentVotes: Doctrine\ORM\PersistentCollection {#1622 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#1758 …}
    +subscribedDomains: Doctrine\ORM\PersistentCollection {#1450 …}
    +follows: Doctrine\ORM\PersistentCollection {#1422 …}
    +followers: Doctrine\ORM\PersistentCollection {#1660 …}
    +blocks: Doctrine\ORM\PersistentCollection {#1454 …}
    +blockers: Doctrine\ORM\PersistentCollection {#1425 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#1439 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#1428 …}
    +reports: Doctrine\ORM\PersistentCollection {#1461 …}
    +favourites: Doctrine\ORM\PersistentCollection {#1438 …}
    +violations: Doctrine\ORM\PersistentCollection {#1697 …}
    +notifications: Doctrine\ORM\PersistentCollection {#1690 …}
    +awards: Doctrine\ORM\PersistentCollection {#1429 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#1612 …}
    +categories: Doctrine\ORM\PersistentCollection {#1675 …}
    -id: 269
    -password: "$2y$13$UYqaD7bZp4O.OwB02SlMIeKWP1aeHwuKf.UMqd1I/0STqvflxyU5K"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#1668 …}
    +apId: "Saigonauticon@voltage.vn"
    +apProfileId: "https://voltage.vn/u/Saigonauticon"
    +apPublicUrl: "https://voltage.vn/u/Saigonauticon"
    +apFollowersUrl: null
    +apInboxUrl: "https://voltage.vn/inbox"
    +apDomain: "voltage.vn"
    +apPreferredUsername: "Saigonauticon"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: false
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1709584336 {#1537
      date: 2024-03-04 21:32:16.0 +01:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1686890246 {#1515
      date: 2023-06-16 06:37:26.0 +02:00
    }
    +__isInitialized__: true
     …2
  }
]
Attributes 
[]
Component 
App\Twig\Components\UserActionsComponent {#15253
  +user: Proxies\__CG__\App\Entity\User {#1943
    +avatar: null
    +cover: null
    +email: "Saigonauticon@voltage.vn"
    +username: "@Saigonauticon@voltage.vn"
    +roles: []
    +followersCount: 0
    +homepage: "front"
    +about: null
    +lastActive: DateTime @1703981706 {#1516
      date: 2023-12-31 01:15:06.0 +01:00
    }
    +markedForDeletionAt: null
    +fields: null
    +oauthGithubId: null
    +oauthGoogleId: null
    +oauthFacebookId: null
    +oauthKeycloakId: null
    +hideAdult: true
    +showSubscribedUsers: true
    +showSubscribedMagazines: true
    +showSubscribedDomains: true
    +preferredLanguages: []
    +featuredMagazines: null
    +showProfileSubscriptions: true
    +showProfileFollowings: true
    +markNewComments: false
    +notifyOnNewEntry: false
    +notifyOnNewEntryReply: false
    +notifyOnNewEntryCommentReply: false
    +notifyOnNewPost: false
    +notifyOnNewPostReply: false
    +notifyOnNewPostCommentReply: false
    +addMentionsEntries: false
    +addMentionsPosts: true
    +isBanned: false
    +isVerified: false
    +isDeleted: false
    +isBot: false
    +spamProtection: true
    +customCss: null
    +ignoreMagazinesCustomCss: false
    +moderatorTokens: Doctrine\ORM\PersistentCollection {#1632 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#1406 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#1713 …}
    +entries: Doctrine\ORM\PersistentCollection {#1710 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#1742 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#1659 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#1470 …}
    +posts: Doctrine\ORM\PersistentCollection {#1746 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#1490 …}
    +postComments: Doctrine\ORM\PersistentCollection {#1772 …}
    +postCommentVotes: Doctrine\ORM\PersistentCollection {#1622 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#1758 …}
    +subscribedDomains: Doctrine\ORM\PersistentCollection {#1450 …}
    +follows: Doctrine\ORM\PersistentCollection {#1422 …}
    +followers: Doctrine\ORM\PersistentCollection {#1660 …}
    +blocks: Doctrine\ORM\PersistentCollection {#1454 …}
    +blockers: Doctrine\ORM\PersistentCollection {#1425 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#1439 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#1428 …}
    +reports: Doctrine\ORM\PersistentCollection {#1461 …}
    +favourites: Doctrine\ORM\PersistentCollection {#1438 …}
    +violations: Doctrine\ORM\PersistentCollection {#1697 …}
    +notifications: Doctrine\ORM\PersistentCollection {#1690 …}
    +awards: Doctrine\ORM\PersistentCollection {#1429 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#1612 …}
    +categories: Doctrine\ORM\PersistentCollection {#1675 …}
    -id: 269
    -password: "$2y$13$UYqaD7bZp4O.OwB02SlMIeKWP1aeHwuKf.UMqd1I/0STqvflxyU5K"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#1668 …}
    +apId: "Saigonauticon@voltage.vn"
    +apProfileId: "https://voltage.vn/u/Saigonauticon"
    +apPublicUrl: "https://voltage.vn/u/Saigonauticon"
    +apFollowersUrl: null
    +apInboxUrl: "https://voltage.vn/inbox"
    +apDomain: "voltage.vn"
    +apPreferredUsername: "Saigonauticon"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: false
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1709584336 {#1537
      date: 2024-03-04 21:32:16.0 +01:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1686890246 {#1515
      date: 2023-06-16 06:37:26.0 +02:00
    }
    +__isInitialized__: true
     …2
  }
}
date App\Twig\Components\DateComponent 14.0 MiB 0.14 ms
Input props 
[
  "date" => DateTimeImmutable @1701339304 {#1850
    date: 2023-11-30 11:15:04.0 +01:00
  }
]
Attributes 
[]
Component 
App\Twig\Components\DateComponent {#15314
  +date: DateTimeImmutable @1701339304 {#1850
    date: 2023-11-30 11:15:04.0 +01:00
  }
}
magazine_box App\Twig\Components\MagazineBoxComponent 14.0 MiB 25.56 ms
Input props 
[
  "magazine" => App\Entity\Magazine {#266
    +icon: Proxies\__CG__\App\Entity\Image {#247 …}
    +name: "askelectronics@discuss.tchncs.de"
    +title: "askelectronics"
    +description: """
      **For questions about component-level electronic circuits, tools and equipment.**\n
      \n
      Rules\n
      -----\n
      \n
      1: Be nice.\n
      \n
      2: Be on-topic (eg: *Electronic*, not *electrical*).\n
      \n
      3: No commercial stuff, buying, selling or valuations.\n
      \n
      4: Be safe.\n
      \n
      ---
      """
    +rules: null
    +subscriptionsCount: 1
    +entryCount: 154
    +entryCommentCount: 1230
    +postCount: 1
    +postCommentCount: 4
    +isAdult: false
    +customCss: null
    +lastActive: DateTime @1729413608 {#276
      date: 2024-10-20 10:40:08.0 +02:00
    }
    +markedForDeletionAt: null
    +tags: null
    +moderators: Doctrine\ORM\PersistentCollection {#238 …}
    +ownershipRequests: Doctrine\ORM\PersistentCollection {#234 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#223 …}
    +entries: Doctrine\ORM\PersistentCollection {#181 …}
    +posts: Doctrine\ORM\PersistentCollection {#139 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#201 …}
    +bans: Doctrine\ORM\PersistentCollection {#118 …}
    +reports: Doctrine\ORM\PersistentCollection {#104 …}
    +badges: Doctrine\ORM\PersistentCollection {#82 …}
    +logs: Doctrine\ORM\PersistentCollection {#72 …}
    +awards: Doctrine\ORM\PersistentCollection {#61 …}
    +categories: Doctrine\ORM\PersistentCollection {#1820 …}
    -id: 11
    +apId: "askelectronics@discuss.tchncs.de"
    +apProfileId: "https://discuss.tchncs.de/c/askelectronics"
    +apPublicUrl: "https://discuss.tchncs.de/c/askelectronics"
    +apFollowersUrl: "https://discuss.tchncs.de/c/askelectronics/followers"
    +apInboxUrl: "https://discuss.tchncs.de/inbox"
    +apDomain: "discuss.tchncs.de"
    +apPreferredUsername: "askelectronics"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: null
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1727247714 {#270
      date: 2024-09-25 09:01:54.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1687144409 {#272
      date: 2023-06-19 05:13:29.0 +02:00
    }
  }
  "showSectionTitle" => true
]
Attributes 
[]
Component 
App\Twig\Components\MagazineBoxComponent {#15370
  +magazine: App\Entity\Magazine {#266
    +icon: Proxies\__CG__\App\Entity\Image {#247 …}
    +name: "askelectronics@discuss.tchncs.de"
    +title: "askelectronics"
    +description: """
      **For questions about component-level electronic circuits, tools and equipment.**\n
      \n
      Rules\n
      -----\n
      \n
      1: Be nice.\n
      \n
      2: Be on-topic (eg: *Electronic*, not *electrical*).\n
      \n
      3: No commercial stuff, buying, selling or valuations.\n
      \n
      4: Be safe.\n
      \n
      ---
      """
    +rules: null
    +subscriptionsCount: 1
    +entryCount: 154
    +entryCommentCount: 1230
    +postCount: 1
    +postCommentCount: 4
    +isAdult: false
    +customCss: null
    +lastActive: DateTime @1729413608 {#276
      date: 2024-10-20 10:40:08.0 +02:00
    }
    +markedForDeletionAt: null
    +tags: null
    +moderators: Doctrine\ORM\PersistentCollection {#238 …}
    +ownershipRequests: Doctrine\ORM\PersistentCollection {#234 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#223 …}
    +entries: Doctrine\ORM\PersistentCollection {#181 …}
    +posts: Doctrine\ORM\PersistentCollection {#139 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#201 …}
    +bans: Doctrine\ORM\PersistentCollection {#118 …}
    +reports: Doctrine\ORM\PersistentCollection {#104 …}
    +badges: Doctrine\ORM\PersistentCollection {#82 …}
    +logs: Doctrine\ORM\PersistentCollection {#72 …}
    +awards: Doctrine\ORM\PersistentCollection {#61 …}
    +categories: Doctrine\ORM\PersistentCollection {#1820 …}
    -id: 11
    +apId: "askelectronics@discuss.tchncs.de"
    +apProfileId: "https://discuss.tchncs.de/c/askelectronics"
    +apPublicUrl: "https://discuss.tchncs.de/c/askelectronics"
    +apFollowersUrl: "https://discuss.tchncs.de/c/askelectronics/followers"
    +apInboxUrl: "https://discuss.tchncs.de/inbox"
    +apDomain: "discuss.tchncs.de"
    +apPreferredUsername: "askelectronics"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: null
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1727247714 {#270
      date: 2024-09-25 09:01:54.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1687144409 {#272
      date: 2023-06-19 05:13:29.0 +02:00
    }
  }
  +showCover: true
  +showDescription: true
  +showRules: true
  +showSubscribeButton: true
  +showInfo: true
  +showMeta: true
  +showSectionTitle: true
  +stretchedLink: true
}
magazine_sub App\Twig\Components\MagazineSubComponent 14.0 MiB 0.47 ms
Input props 
[
  "magazine" => App\Entity\Magazine {#266
    +icon: Proxies\__CG__\App\Entity\Image {#247 …}
    +name: "askelectronics@discuss.tchncs.de"
    +title: "askelectronics"
    +description: """
      **For questions about component-level electronic circuits, tools and equipment.**\n
      \n
      Rules\n
      -----\n
      \n
      1: Be nice.\n
      \n
      2: Be on-topic (eg: *Electronic*, not *electrical*).\n
      \n
      3: No commercial stuff, buying, selling or valuations.\n
      \n
      4: Be safe.\n
      \n
      ---
      """
    +rules: null
    +subscriptionsCount: 1
    +entryCount: 154
    +entryCommentCount: 1230
    +postCount: 1
    +postCommentCount: 4
    +isAdult: false
    +customCss: null
    +lastActive: DateTime @1729413608 {#276
      date: 2024-10-20 10:40:08.0 +02:00
    }
    +markedForDeletionAt: null
    +tags: null
    +moderators: Doctrine\ORM\PersistentCollection {#238 …}
    +ownershipRequests: Doctrine\ORM\PersistentCollection {#234 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#223 …}
    +entries: Doctrine\ORM\PersistentCollection {#181 …}
    +posts: Doctrine\ORM\PersistentCollection {#139 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#201 …}
    +bans: Doctrine\ORM\PersistentCollection {#118 …}
    +reports: Doctrine\ORM\PersistentCollection {#104 …}
    +badges: Doctrine\ORM\PersistentCollection {#82 …}
    +logs: Doctrine\ORM\PersistentCollection {#72 …}
    +awards: Doctrine\ORM\PersistentCollection {#61 …}
    +categories: Doctrine\ORM\PersistentCollection {#1820 …}
    -id: 11
    +apId: "askelectronics@discuss.tchncs.de"
    +apProfileId: "https://discuss.tchncs.de/c/askelectronics"
    +apPublicUrl: "https://discuss.tchncs.de/c/askelectronics"
    +apFollowersUrl: "https://discuss.tchncs.de/c/askelectronics/followers"
    +apInboxUrl: "https://discuss.tchncs.de/inbox"
    +apDomain: "discuss.tchncs.de"
    +apPreferredUsername: "askelectronics"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: null
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1727247714 {#270
      date: 2024-09-25 09:01:54.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1687144409 {#272
      date: 2023-06-19 05:13:29.0 +02:00
    }
  }
]
Attributes 
[]
Component 
App\Twig\Components\MagazineSubComponent {#15428
  +magazine: App\Entity\Magazine {#266
    +icon: Proxies\__CG__\App\Entity\Image {#247 …}
    +name: "askelectronics@discuss.tchncs.de"
    +title: "askelectronics"
    +description: """
      **For questions about component-level electronic circuits, tools and equipment.**\n
      \n
      Rules\n
      -----\n
      \n
      1: Be nice.\n
      \n
      2: Be on-topic (eg: *Electronic*, not *electrical*).\n
      \n
      3: No commercial stuff, buying, selling or valuations.\n
      \n
      4: Be safe.\n
      \n
      ---
      """
    +rules: null
    +subscriptionsCount: 1
    +entryCount: 154
    +entryCommentCount: 1230
    +postCount: 1
    +postCommentCount: 4
    +isAdult: false
    +customCss: null
    +lastActive: DateTime @1729413608 {#276
      date: 2024-10-20 10:40:08.0 +02:00
    }
    +markedForDeletionAt: null
    +tags: null
    +moderators: Doctrine\ORM\PersistentCollection {#238 …}
    +ownershipRequests: Doctrine\ORM\PersistentCollection {#234 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#223 …}
    +entries: Doctrine\ORM\PersistentCollection {#181 …}
    +posts: Doctrine\ORM\PersistentCollection {#139 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#201 …}
    +bans: Doctrine\ORM\PersistentCollection {#118 …}
    +reports: Doctrine\ORM\PersistentCollection {#104 …}
    +badges: Doctrine\ORM\PersistentCollection {#82 …}
    +logs: Doctrine\ORM\PersistentCollection {#72 …}
    +awards: Doctrine\ORM\PersistentCollection {#61 …}
    +categories: Doctrine\ORM\PersistentCollection {#1820 …}
    -id: 11
    +apId: "askelectronics@discuss.tchncs.de"
    +apProfileId: "https://discuss.tchncs.de/c/askelectronics"
    +apPublicUrl: "https://discuss.tchncs.de/c/askelectronics"
    +apFollowersUrl: "https://discuss.tchncs.de/c/askelectronics/followers"
    +apInboxUrl: "https://discuss.tchncs.de/inbox"
    +apDomain: "discuss.tchncs.de"
    +apPreferredUsername: "askelectronics"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: null
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1727247714 {#270
      date: 2024-09-25 09:01:54.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1687144409 {#272
      date: 2023-06-19 05:13:29.0 +02:00
    }
  }
}
date App\Twig\Components\DateComponent 14.0 MiB 0.11 ms
Input props 
[
  "date" => DateTimeImmutable @1687144409 {#272
    date: 2023-06-19 05:13:29.0 +02:00
  }
]
Attributes 
[]
Component 
App\Twig\Components\DateComponent {#15540
  +date: DateTimeImmutable @1687144409 {#272
    date: 2023-06-19 05:13:29.0 +02:00
  }
}
user_inline App\Twig\Components\UserInlineComponent 14.0 MiB 0.55 ms
Input props 
[
  "user" => Proxies\__CG__\App\Entity\User {#15599
    +avatar: null
    +cover: null
    +email: "kbin@j0h.nl"
    +username: "Sprite_tm"
    +roles: [
      "ROLE_ADMIN"
    ]
    +followersCount: 0
    +homepage: "front"
    +about: "Hi! I'm Sprite_tm. You may know me from sites like https://spritesmods.com."
    +lastActive: DateTime @1707547382 {#15646
      date: 2024-02-10 07:43:02.0 +01:00
    }
    +markedForDeletionAt: null
    +fields: null
    +oauthGithubId: null
    +oauthGoogleId: null
    +oauthFacebookId: null
    +oauthKeycloakId: null
    +hideAdult: true
    +showSubscribedUsers: true
    +showSubscribedMagazines: true
    +showSubscribedDomains: true
    +preferredLanguages: []
    +featuredMagazines: null
    +showProfileSubscriptions: true
    +showProfileFollowings: true
    +markNewComments: false
    +notifyOnNewEntry: false
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     …2
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]
Attributes 
[]
Component 
App\Twig\Components\UserInlineComponent {#15617
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      pEFV/aodP9X7XFuQD0iGTOTGDXiMSLPOLI/ifmwbT41rgIN9x14MpU2EtWeVz7sx\r\n
      ZIFMt98rHx6BsZx/DnSFDQ8iqrKF3u+OOv7s6j+8odz4Rq53+16vMev5VUMOPq+E\r\n
      aQn8SDKkOjZzwb9QGB9bXS5s9yyj4pLyggQ0O5S2ugZjUcmCecNpktN8bUR3I9VQ\r\n
      KWkcQa9yCpidp/JYrQtlbqAPiIzptA4T4RNh+F6pKbmw7hNMIPipPzbQezEMaBOn\r\n
      Cgb38EldyAVGjCzRGfhu9SNU9B03bg==\r\n
      -----END PRIVATE KEY-----
      """
    +publicKey: """
      -----BEGIN PUBLIC KEY-----\r\n
      MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA5XnqLc+UwYjJQmLCWCR1\r\n
      TcY7577dKrEANvNge73agU2wEXw+PYij4jCMIFNsoQiNKE0kMHNmcvQEPt9a8Jrw\r\n
      cfFb3C4ELyqTcz1YTEI3pSu5OYj4j3P1tbKGmrnqat2MECoBqHeHOVYfXzCJ0gDX\r\n
      zizlEqN6VM32kGhhL0HOQ2yow4CI7L/ziiNWnG87tOuykMyE4bvtQb3KkGKaNlMe\r\n
      Vtt5zapK0Wfvs/69TCNo0t78IuTksM+H1oSzyVxOpcKJHOm/7gGXu7C0+kELY3ry\r\n
      55jMkSFZ5sW7RzzEn4S3c/LLEIaDQnwJDJwYw1F99UkrOu6VPL+TtxZ9h3fqhVgo\r\n
      60RMEqQQHduCDSairI0muo96Cy/F8PB2X/sekETyXIf3NxTVkbTNm/Z/FbAEIg/f\r\n
      OaWn8nkNU6iHuIkoyNIlIMtloMDtAtWdDzW0M0JkZNBDgJcSF4z5gdtvT1ePjnGc\r\n
      S0/aYT/64ndULfUaPti3ZEvWanvHNiR3iSnOTb//Djl+bkPwfNiV57l2Iv6FRCW+\r\n
      beNhvLtyCJGDORvxrdN91lOnW8ijgZnZ212j8PSwtzO6KKd8sgm91Ay34IP152Vb\r\n
      2cUjwj5YeRtS29K+O7Iiqv9JPWEbmtABbFYNHYan7sLG+hvR8eRInLj7LjiI1yDQ\r\n
      U45ZxOEnTM9GSbe2y48JSnUCAwEAAQ==\r\n
      -----END PUBLIC KEY-----
      """
    +apFetchedAt: null
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1686560440 {#15647
      date: 2023-06-12 11:00:40.0 +02:00
    }
    +__isInitialized__: true
     …2
  }
  +showAvatar: true
}
related_magazines App\Twig\Components\RelatedMagazinesComponent 16.0 MiB 12.40 ms
Input props 
[
  "magazine" => "askelectronics@discuss.tchncs.de"
  "tag" => null
]
Attributes 
[]
Component 
App\Twig\Components\RelatedMagazinesComponent {#15808
  +limit: 4
  +tag: null
  +magazine: "askelectronics@discuss.tchncs.de"
  +type: "magazine"
  +title: "related_magazines"
  +refreshedRandom: false
  -repository: App\Repository\MagazineRepository {#334 …}
  -cache: Symfony\Component\Cache\Adapter\TraceableTagAwareAdapter {#600 …}
  -twig: Twig\Environment {#1252 …}
  -requestStack: Symfony\Component\HttpFoundation\RequestStack {#1328 …}
}
active_users App\Twig\Components\ActiveUsersComponent 16.0 MiB 35.17 ms
Input props 
[
  "magazine" => App\Entity\Magazine {#266
    +icon: Proxies\__CG__\App\Entity\Image {#247 …}
    +name: "askelectronics@discuss.tchncs.de"
    +title: "askelectronics"
    +description: """
      **For questions about component-level electronic circuits, tools and equipment.**\n
      \n
      Rules\n
      -----\n
      \n
      1: Be nice.\n
      \n
      2: Be on-topic (eg: *Electronic*, not *electrical*).\n
      \n
      3: No commercial stuff, buying, selling or valuations.\n
      \n
      4: Be safe.\n
      \n
      ---
      """
    +rules: null
    +subscriptionsCount: 1
    +entryCount: 154
    +entryCommentCount: 1230
    +postCount: 1
    +postCommentCount: 4
    +isAdult: false
    +customCss: null
    +lastActive: DateTime @1729413608 {#276
      date: 2024-10-20 10:40:08.0 +02:00
    }
    +markedForDeletionAt: null
    +tags: null
    +moderators: Doctrine\ORM\PersistentCollection {#238 …}
    +ownershipRequests: Doctrine\ORM\PersistentCollection {#234 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#223 …}
    +entries: Doctrine\ORM\PersistentCollection {#181 …}
    +posts: Doctrine\ORM\PersistentCollection {#139 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#201 …}
    +bans: Doctrine\ORM\PersistentCollection {#118 …}
    +reports: Doctrine\ORM\PersistentCollection {#104 …}
    +badges: Doctrine\ORM\PersistentCollection {#82 …}
    +logs: Doctrine\ORM\PersistentCollection {#72 …}
    +awards: Doctrine\ORM\PersistentCollection {#61 …}
    +categories: Doctrine\ORM\PersistentCollection {#1820 …}
    -id: 11
    +apId: "askelectronics@discuss.tchncs.de"
    +apProfileId: "https://discuss.tchncs.de/c/askelectronics"
    +apPublicUrl: "https://discuss.tchncs.de/c/askelectronics"
    +apFollowersUrl: "https://discuss.tchncs.de/c/askelectronics/followers"
    +apInboxUrl: "https://discuss.tchncs.de/inbox"
    +apDomain: "discuss.tchncs.de"
    +apPreferredUsername: "askelectronics"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: null
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1727247714 {#270
      date: 2024-09-25 09:01:54.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1687144409 {#272
      date: 2023-06-19 05:13:29.0 +02:00
    }
  }
]
Attributes 
[]
Component 
App\Twig\Components\ActiveUsersComponent {#15934
  +magazine: App\Entity\Magazine {#266
    +icon: Proxies\__CG__\App\Entity\Image {#247 …}
    +name: "askelectronics@discuss.tchncs.de"
    +title: "askelectronics"
    +description: """
      **For questions about component-level electronic circuits, tools and equipment.**\n
      \n
      Rules\n
      -----\n
      \n
      1: Be nice.\n
      \n
      2: Be on-topic (eg: *Electronic*, not *electrical*).\n
      \n
      3: No commercial stuff, buying, selling or valuations.\n
      \n
      4: Be safe.\n
      \n
      ---
      """
    +rules: null
    +subscriptionsCount: 1
    +entryCount: 154
    +entryCommentCount: 1230
    +postCount: 1
    +postCommentCount: 4
    +isAdult: false
    +customCss: null
    +lastActive: DateTime @1729413608 {#276
      date: 2024-10-20 10:40:08.0 +02:00
    }
    +markedForDeletionAt: null
    +tags: null
    +moderators: Doctrine\ORM\PersistentCollection {#238 …}
    +ownershipRequests: Doctrine\ORM\PersistentCollection {#234 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#223 …}
    +entries: Doctrine\ORM\PersistentCollection {#181 …}
    +posts: Doctrine\ORM\PersistentCollection {#139 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#201 …}
    +bans: Doctrine\ORM\PersistentCollection {#118 …}
    +reports: Doctrine\ORM\PersistentCollection {#104 …}
    +badges: Doctrine\ORM\PersistentCollection {#82 …}
    +logs: Doctrine\ORM\PersistentCollection {#72 …}
    +awards: Doctrine\ORM\PersistentCollection {#61 …}
    +categories: Doctrine\ORM\PersistentCollection {#1820 …}
    -id: 11
    +apId: "askelectronics@discuss.tchncs.de"
    +apProfileId: "https://discuss.tchncs.de/c/askelectronics"
    +apPublicUrl: "https://discuss.tchncs.de/c/askelectronics"
    +apFollowersUrl: "https://discuss.tchncs.de/c/askelectronics/followers"
    +apInboxUrl: "https://discuss.tchncs.de/inbox"
    +apDomain: "discuss.tchncs.de"
    +apPreferredUsername: "askelectronics"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: null
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1727247714 {#270
      date: 2024-09-25 09:01:54.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1687144409 {#272
      date: 2023-06-19 05:13:29.0 +02:00
    }
  }
  -userRepository: App\Repository\UserRepository {#603 …}
  -cache: Symfony\Component\Cache\Adapter\TraceableTagAwareAdapter {#600 …}
  -twig: Twig\Environment {#1252 …}
  -requestStack: Symfony\Component\HttpFoundation\RequestStack {#1328 …}
}
user_avatar App\Twig\Components\UserAvatarComponent 16.0 MiB 0.53 ms
Input props 
[
  "user" => App\Entity\User {#16184
    +avatar: Proxies\__CG__\App\Entity\Image {#16183 …}
    +cover: null
    +email: "jarrodsfarrell@hoosier.social"
    +username: "@jarrodsfarrell@hoosier.social"
    +roles: []
    +followersCount: 0
    +homepage: "front"
    +about: """
      Grounded tech enthusiast, Linux enjoyer, and Indy 500 wannabe that lives in south-east Indiana.  \n
      Go pride. [#LGBTQ](https://hoosier.social/tags/LGBTQ)
      """
    +lastActive: DateTime @1690728142 {#16187
      date: 2023-07-30 16:42:22.0 +02:00
    }
    +markedForDeletionAt: null
    +fields: null
    +oauthGithubId: null
    +oauthGoogleId: null
    +oauthFacebookId: null
    +oauthKeycloakId: null
    +hideAdult: true
    +showSubscribedUsers: true
    +showSubscribedMagazines: true
    +showSubscribedDomains: true
    +preferredLanguages: []
    +featuredMagazines: null
    +showProfileSubscriptions: true
    +showProfileFollowings: true
    +markNewComments: false
    +notifyOnNewEntry: false
    +notifyOnNewEntryReply: false
    +notifyOnNewEntryCommentReply: false
    +notifyOnNewPost: false
    +notifyOnNewPostReply: false
    +notifyOnNewPostCommentReply: false
    +addMentionsEntries: false
    +addMentionsPosts: true
    +isBanned: false
    +isVerified: false
    +isDeleted: false
    +isBot: false
    +spamProtection: true
    +customCss: null
    +ignoreMagazinesCustomCss: false
    +moderatorTokens: Doctrine\ORM\PersistentCollection {#16182 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#16180 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#16178 …}
    +entries: Doctrine\ORM\PersistentCollection {#16176 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#16174 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#16172 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#16170 …}
    +posts: Doctrine\ORM\PersistentCollection {#16168 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#16166 …}
    +postComments: Doctrine\ORM\PersistentCollection {#16164 …}
    +postCommentVotes: Doctrine\ORM\PersistentCollection {#16162 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#16160 …}
    +subscribedDomains: Doctrine\ORM\PersistentCollection {#16158 …}
    +follows: Doctrine\ORM\PersistentCollection {#16156 …}
    +followers: Doctrine\ORM\PersistentCollection {#16154 …}
    +blocks: Doctrine\ORM\PersistentCollection {#16152 …}
    +blockers: Doctrine\ORM\PersistentCollection {#16150 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#16148 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#16146 …}
    +reports: Doctrine\ORM\PersistentCollection {#16144 …}
    +favourites: Doctrine\ORM\PersistentCollection {#16142 …}
    +violations: Doctrine\ORM\PersistentCollection {#16140 …}
    +notifications: Doctrine\ORM\PersistentCollection {#16138 …}
    +awards: Doctrine\ORM\PersistentCollection {#16136 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#16134 …}
    +categories: Doctrine\ORM\PersistentCollection {#16132 …}
    -id: 20657
    -password: "$2y$13$XNERcrvg1/EZkZQbKQ6R6efd5bjo3rlAJRSz0lDRnfkNCV76hr5Me"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#16130 …}
    +apId: "jarrodsfarrell@hoosier.social"
    +apProfileId: "https://hoosier.social/users/jarrodsfarrell"
    +apPublicUrl: "https://hoosier.social/@jarrodsfarrell"
    +apFollowersUrl: "https://hoosier.social/users/jarrodsfarrell/followers"
    +apInboxUrl: "https://hoosier.social/inbox"
    +apDomain: "hoosier.social"
    +apPreferredUsername: "jarrodsfarrell"
    +apDiscoverable: false
    +apManuallyApprovesFollowers: false
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1690726862 {#16186
      date: 2023-07-30 16:21:02.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1688878027 {#16185
      date: 2023-07-09 06:47:07.0 +02:00
    }
  }
  "width" => 65
  "height" => 65
  "asLink" => true
]
Attributes 
[]
Component 
App\Twig\Components\UserAvatarComponent {#15990
  +width: 65
  +height: 65
  +user: App\Entity\User {#16184
    +avatar: Proxies\__CG__\App\Entity\Image {#16183 …}
    +cover: null
    +email: "jarrodsfarrell@hoosier.social"
    +username: "@jarrodsfarrell@hoosier.social"
    +roles: []
    +followersCount: 0
    +homepage: "front"
    +about: """
      Grounded tech enthusiast, Linux enjoyer, and Indy 500 wannabe that lives in south-east Indiana.  \n
      Go pride. [#LGBTQ](https://hoosier.social/tags/LGBTQ)
      """
    +lastActive: DateTime @1690728142 {#16187
      date: 2023-07-30 16:42:22.0 +02:00
    }
    +markedForDeletionAt: null
    +fields: null
    +oauthGithubId: null
    +oauthGoogleId: null
    +oauthFacebookId: null
    +oauthKeycloakId: null
    +hideAdult: true
    +showSubscribedUsers: true
    +showSubscribedMagazines: true
    +showSubscribedDomains: true
    +preferredLanguages: []
    +featuredMagazines: null
    +showProfileSubscriptions: true
    +showProfileFollowings: true
    +markNewComments: false
    +notifyOnNewEntry: false
    +notifyOnNewEntryReply: false
    +notifyOnNewEntryCommentReply: false
    +notifyOnNewPost: false
    +notifyOnNewPostReply: false
    +notifyOnNewPostCommentReply: false
    +addMentionsEntries: false
    +addMentionsPosts: true
    +isBanned: false
    +isVerified: false
    +isDeleted: false
    +isBot: false
    +spamProtection: true
    +customCss: null
    +ignoreMagazinesCustomCss: false
    +moderatorTokens: Doctrine\ORM\PersistentCollection {#16182 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#16180 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#16178 …}
    +entries: Doctrine\ORM\PersistentCollection {#16176 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#16174 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#16172 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#16170 …}
    +posts: Doctrine\ORM\PersistentCollection {#16168 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#16166 …}
    +postComments: Doctrine\ORM\PersistentCollection {#16164 …}
    +postCommentVotes: Doctrine\ORM\PersistentCollection {#16162 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#16160 …}
    +subscribedDomains: Doctrine\ORM\PersistentCollection {#16158 …}
    +follows: Doctrine\ORM\PersistentCollection {#16156 …}
    +followers: Doctrine\ORM\PersistentCollection {#16154 …}
    +blocks: Doctrine\ORM\PersistentCollection {#16152 …}
    +blockers: Doctrine\ORM\PersistentCollection {#16150 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#16148 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#16146 …}
    +reports: Doctrine\ORM\PersistentCollection {#16144 …}
    +favourites: Doctrine\ORM\PersistentCollection {#16142 …}
    +violations: Doctrine\ORM\PersistentCollection {#16140 …}
    +notifications: Doctrine\ORM\PersistentCollection {#16138 …}
    +awards: Doctrine\ORM\PersistentCollection {#16136 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#16134 …}
    +categories: Doctrine\ORM\PersistentCollection {#16132 …}
    -id: 20657
    -password: "$2y$13$XNERcrvg1/EZkZQbKQ6R6efd5bjo3rlAJRSz0lDRnfkNCV76hr5Me"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#16130 …}
    +apId: "jarrodsfarrell@hoosier.social"
    +apProfileId: "https://hoosier.social/users/jarrodsfarrell"
    +apPublicUrl: "https://hoosier.social/@jarrodsfarrell"
    +apFollowersUrl: "https://hoosier.social/users/jarrodsfarrell/followers"
    +apInboxUrl: "https://hoosier.social/inbox"
    +apDomain: "hoosier.social"
    +apPreferredUsername: "jarrodsfarrell"
    +apDiscoverable: false
    +apManuallyApprovesFollowers: false
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1690726862 {#16186
      date: 2023-07-30 16:21:02.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1688878027 {#16185
      date: 2023-07-09 06:47:07.0 +02:00
    }
  }
  +asLink: true
}
user_avatar App\Twig\Components\UserAvatarComponent 16.0 MiB 0.64 ms
Input props 
[
  "user" => App\Entity\User {#16066
    +avatar: Proxies\__CG__\App\Entity\Image {#16065 …}
    +cover: null
    +email: "skillissuer@discuss.tchncs.de"
    +username: "@skillissuer@discuss.tchncs.de"
    +roles: []
    +followersCount: 0
    +homepage: "front"
    +about: "i should be writing"
    +lastActive: DateTime @1721044672 {#16069
      date: 2024-07-15 13:57:52.0 +02:00
    }
    +markedForDeletionAt: null
    +fields: null
    +oauthGithubId: null
    +oauthGoogleId: null
    +oauthFacebookId: null
    +oauthKeycloakId: null
    +hideAdult: true
    +showSubscribedUsers: true
    +showSubscribedMagazines: true
    +showSubscribedDomains: true
    +preferredLanguages: []
    +featuredMagazines: null
    +showProfileSubscriptions: false
    +showProfileFollowings: true
    +markNewComments: false
    +notifyOnNewEntry: false
    +notifyOnNewEntryReply: true
    +notifyOnNewEntryCommentReply: true
    +notifyOnNewPost: false
    +notifyOnNewPostReply: true
    +notifyOnNewPostCommentReply: true
    +addMentionsEntries: false
    +addMentionsPosts: true
    +isBanned: false
    +isVerified: false
    +isDeleted: false
    +isBot: false
    +spamProtection: true
    +customCss: null
    +ignoreMagazinesCustomCss: false
    +moderatorTokens: Doctrine\ORM\PersistentCollection {#16064 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#16062 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#16060 …}
    +entries: Doctrine\ORM\PersistentCollection {#16058 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#16056 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#16054 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#16052 …}
    +posts: Doctrine\ORM\PersistentCollection {#16050 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#16048 …}
    +postComments: Doctrine\ORM\PersistentCollection {#16046 …}
    +postCommentVotes: Doctrine\ORM\PersistentCollection {#16044 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#16042 …}
    +subscribedDomains: Doctrine\ORM\PersistentCollection {#16040 …}
    +follows: Doctrine\ORM\PersistentCollection {#16038 …}
    +followers: Doctrine\ORM\PersistentCollection {#16036 …}
    +blocks: Doctrine\ORM\PersistentCollection {#16034 …}
    +blockers: Doctrine\ORM\PersistentCollection {#16032 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#16030 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#16028 …}
    +reports: Doctrine\ORM\PersistentCollection {#16026 …}
    +favourites: Doctrine\ORM\PersistentCollection {#16024 …}
    +violations: Doctrine\ORM\PersistentCollection {#16022 …}
    +notifications: Doctrine\ORM\PersistentCollection {#16020 …}
    +awards: Doctrine\ORM\PersistentCollection {#16018 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#16016 …}
    +categories: Doctrine\ORM\PersistentCollection {#16014 …}
    -id: 39464
    -password: "$2y$13$wQAP4Gif3ESopfZf00xAU.zwr9iTTX.ev3twB9omsse0v00sxuD/G"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#16012 …}
    +apId: "skillissuer@discuss.tchncs.de"
    +apProfileId: "https://discuss.tchncs.de/u/skillissuer"
    +apPublicUrl: "https://discuss.tchncs.de/u/skillissuer"
    +apFollowersUrl: null
    +apInboxUrl: "https://discuss.tchncs.de/inbox"
    +apDomain: "discuss.tchncs.de"
    +apPreferredUsername: "skillissuer"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: false
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1728245617 {#16068
      date: 2024-10-06 22:13:37.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1691480767 {#16067
      date: 2023-08-08 09:46:07.0 +02:00
    }
  }
  "width" => 65
  "height" => 65
  "asLink" => true
]
Attributes 
[]
Component 
App\Twig\Components\UserAvatarComponent {#16270
  +width: 65
  +height: 65
  +user: App\Entity\User {#16066
    +avatar: Proxies\__CG__\App\Entity\Image {#16065 …}
    +cover: null
    +email: "skillissuer@discuss.tchncs.de"
    +username: "@skillissuer@discuss.tchncs.de"
    +roles: []
    +followersCount: 0
    +homepage: "front"
    +about: "i should be writing"
    +lastActive: DateTime @1721044672 {#16069
      date: 2024-07-15 13:57:52.0 +02:00
    }
    +markedForDeletionAt: null
    +fields: null
    +oauthGithubId: null
    +oauthGoogleId: null
    +oauthFacebookId: null
    +oauthKeycloakId: null
    +hideAdult: true
    +showSubscribedUsers: true
    +showSubscribedMagazines: true
    +showSubscribedDomains: true
    +preferredLanguages: []
    +featuredMagazines: null
    +showProfileSubscriptions: false
    +showProfileFollowings: true
    +markNewComments: false
    +notifyOnNewEntry: false
    +notifyOnNewEntryReply: true
    +notifyOnNewEntryCommentReply: true
    +notifyOnNewPost: false
    +notifyOnNewPostReply: true
    +notifyOnNewPostCommentReply: true
    +addMentionsEntries: false
    +addMentionsPosts: true
    +isBanned: false
    +isVerified: false
    +isDeleted: false
    +isBot: false
    +spamProtection: true
    +customCss: null
    +ignoreMagazinesCustomCss: false
    +moderatorTokens: Doctrine\ORM\PersistentCollection {#16064 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#16062 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#16060 …}
    +entries: Doctrine\ORM\PersistentCollection {#16058 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#16056 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#16054 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#16052 …}
    +posts: Doctrine\ORM\PersistentCollection {#16050 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#16048 …}
    +postComments: Doctrine\ORM\PersistentCollection {#16046 …}
    +postCommentVotes: Doctrine\ORM\PersistentCollection {#16044 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#16042 …}
    +subscribedDomains: Doctrine\ORM\PersistentCollection {#16040 …}
    +follows: Doctrine\ORM\PersistentCollection {#16038 …}
    +followers: Doctrine\ORM\PersistentCollection {#16036 …}
    +blocks: Doctrine\ORM\PersistentCollection {#16034 …}
    +blockers: Doctrine\ORM\PersistentCollection {#16032 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#16030 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#16028 …}
    +reports: Doctrine\ORM\PersistentCollection {#16026 …}
    +favourites: Doctrine\ORM\PersistentCollection {#16024 …}
    +violations: Doctrine\ORM\PersistentCollection {#16022 …}
    +notifications: Doctrine\ORM\PersistentCollection {#16020 …}
    +awards: Doctrine\ORM\PersistentCollection {#16018 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#16016 …}
    +categories: Doctrine\ORM\PersistentCollection {#16014 …}
    -id: 39464
    -password: "$2y$13$wQAP4Gif3ESopfZf00xAU.zwr9iTTX.ev3twB9omsse0v00sxuD/G"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#16012 …}
    +apId: "skillissuer@discuss.tchncs.de"
    +apProfileId: "https://discuss.tchncs.de/u/skillissuer"
    +apPublicUrl: "https://discuss.tchncs.de/u/skillissuer"
    +apFollowersUrl: null
    +apInboxUrl: "https://discuss.tchncs.de/inbox"
    +apDomain: "discuss.tchncs.de"
    +apPreferredUsername: "skillissuer"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: false
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1728245617 {#16068
      date: 2024-10-06 22:13:37.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1691480767 {#16067
      date: 2023-08-08 09:46:07.0 +02:00
    }
  }
  +asLink: true
}
user_avatar App\Twig\Components\UserAvatarComponent 16.0 MiB 0.35 ms
Input props 
[
  "user" => App\Entity\User {#16007
    +avatar: Proxies\__CG__\App\Entity\Image {#16006 …}
    +cover: Proxies\__CG__\App\Entity\Image {#16005 …}
    +email: "vfrmedia@social.tchncs.de"
    +username: "@vfrmedia@social.tchncs.de"
    +roles: []
    +followersCount: 0
    +homepage: "front"
    +about: """
      Old roaming Tom Cat (zwerfkater) but still young at heart. Toots EN, (NL,FR,DE). [#DevOpa](https://social.tchncs.de/tags/DevOpa) - interested more in retro tech / culture / aesthetics than new stuff. Also transport and public infrastructure in general (with a UK/European focus)\n
      \n
      Welcome to the secret goose shed!\n
      \n
      Avatar is a tabby point Siamese cat - header picture is a Stentor FM radio transmitter designed in the Netherlands; popular with small pirate radio broadcasters in late 1980s
      """
    +lastActive: DateTime @1692636225 {#16010
      date: 2023-08-21 18:43:45.0 +02:00
    }
    +markedForDeletionAt: null
    +fields: null
    +oauthGithubId: null
    +oauthGoogleId: null
    +oauthFacebookId: null
    +oauthKeycloakId: null
    +hideAdult: true
    +showSubscribedUsers: true
    +showSubscribedMagazines: true
    +showSubscribedDomains: true
    +preferredLanguages: []
    +featuredMagazines: null
    +showProfileSubscriptions: false
    +showProfileFollowings: true
    +markNewComments: false
    +notifyOnNewEntry: false
    +notifyOnNewEntryReply: true
    +notifyOnNewEntryCommentReply: true
    +notifyOnNewPost: false
    +notifyOnNewPostReply: true
    +notifyOnNewPostCommentReply: true
    +addMentionsEntries: false
    +addMentionsPosts: true
    +isBanned: false
    +isVerified: false
    +isDeleted: false
    +isBot: false
    +spamProtection: true
    +customCss: null
    +ignoreMagazinesCustomCss: false
    +moderatorTokens: Doctrine\ORM\PersistentCollection {#16004 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#16002 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#15952 …}
    +entries: Doctrine\ORM\PersistentCollection {#15954 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#15961 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#15962 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#15964 …}
    +posts: Doctrine\ORM\PersistentCollection {#15966 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#15963 …}
    +postComments: Doctrine\ORM\PersistentCollection {#15956 …}
    +postCommentVotes: Doctrine\ORM\PersistentCollection {#15974 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#15971 …}
    +subscribedDomains: Doctrine\ORM\PersistentCollection {#15979 …}
    +follows: Doctrine\ORM\PersistentCollection {#15976 …}
    +followers: Doctrine\ORM\PersistentCollection {#15984 …}
    +blocks: Doctrine\ORM\PersistentCollection {#15986 …}
    +blockers: Doctrine\ORM\PersistentCollection {#15988 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#16396 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#16390 …}
    +reports: Doctrine\ORM\PersistentCollection {#16203 …}
    +favourites: Doctrine\ORM\PersistentCollection {#16192 …}
    +violations: Doctrine\ORM\PersistentCollection {#16398 …}
    +notifications: Doctrine\ORM\PersistentCollection {#16397 …}
    +awards: Doctrine\ORM\PersistentCollection {#16394 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#16391 …}
    +categories: Doctrine\ORM\PersistentCollection {#16388 …}
    -id: 41651
    -password: "$2y$13$MR/jvQLw20snj7dhCUOzrerIeJOUi.vmMEXqlAliA6M/KYuWQH.Sa"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#16387 …}
    +apId: "vfrmedia@social.tchncs.de"
    +apProfileId: "https://social.tchncs.de/users/vfrmedia"
    +apPublicUrl: "https://social.tchncs.de/@vfrmedia"
    +apFollowersUrl: "https://social.tchncs.de/users/vfrmedia/followers"
    +apInboxUrl: "https://social.tchncs.de/inbox"
    +apDomain: "social.tchncs.de"
    +apPreferredUsername: "vfrmedia"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: false
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1692636225 {#16009
      date: 2023-08-21 18:43:45.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1692554254 {#16008
      date: 2023-08-20 19:57:34.0 +02:00
    }
  }
  "width" => 65
  "height" => 65
  "asLink" => true
]
Attributes 
[]
Component 
App\Twig\Components\UserAvatarComponent {#16215
  +width: 65
  +height: 65
  +user: App\Entity\User {#16007
    +avatar: Proxies\__CG__\App\Entity\Image {#16006 …}
    +cover: Proxies\__CG__\App\Entity\Image {#16005 …}
    +email: "vfrmedia@social.tchncs.de"
    +username: "@vfrmedia@social.tchncs.de"
    +roles: []
    +followersCount: 0
    +homepage: "front"
    +about: """
      Old roaming Tom Cat (zwerfkater) but still young at heart. Toots EN, (NL,FR,DE). [#DevOpa](https://social.tchncs.de/tags/DevOpa) - interested more in retro tech / culture / aesthetics than new stuff. Also transport and public infrastructure in general (with a UK/European focus)\n
      \n
      Welcome to the secret goose shed!\n
      \n
      Avatar is a tabby point Siamese cat - header picture is a Stentor FM radio transmitter designed in the Netherlands; popular with small pirate radio broadcasters in late 1980s
      """
    +lastActive: DateTime @1692636225 {#16010
      date: 2023-08-21 18:43:45.0 +02:00
    }
    +markedForDeletionAt: null
    +fields: null
    +oauthGithubId: null
    +oauthGoogleId: null
    +oauthFacebookId: null
    +oauthKeycloakId: null
    +hideAdult: true
    +showSubscribedUsers: true
    +showSubscribedMagazines: true
    +showSubscribedDomains: true
    +preferredLanguages: []
    +featuredMagazines: null
    +showProfileSubscriptions: false
    +showProfileFollowings: true
    +markNewComments: false
    +notifyOnNewEntry: false
    +notifyOnNewEntryReply: true
    +notifyOnNewEntryCommentReply: true
    +notifyOnNewPost: false
    +notifyOnNewPostReply: true
    +notifyOnNewPostCommentReply: true
    +addMentionsEntries: false
    +addMentionsPosts: true
    +isBanned: false
    +isVerified: false
    +isDeleted: false
    +isBot: false
    +spamProtection: true
    +customCss: null
    +ignoreMagazinesCustomCss: false
    +moderatorTokens: Doctrine\ORM\PersistentCollection {#16004 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#16002 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#15952 …}
    +entries: Doctrine\ORM\PersistentCollection {#15954 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#15961 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#15962 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#15964 …}
    +posts: Doctrine\ORM\PersistentCollection {#15966 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#15963 …}
    +postComments: Doctrine\ORM\PersistentCollection {#15956 …}
    +postCommentVotes: Doctrine\ORM\PersistentCollection {#15974 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#15971 …}
    +subscribedDomains: Doctrine\ORM\PersistentCollection {#15979 …}
    +follows: Doctrine\ORM\PersistentCollection {#15976 …}
    +followers: Doctrine\ORM\PersistentCollection {#15984 …}
    +blocks: Doctrine\ORM\PersistentCollection {#15986 …}
    +blockers: Doctrine\ORM\PersistentCollection {#15988 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#16396 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#16390 …}
    +reports: Doctrine\ORM\PersistentCollection {#16203 …}
    +favourites: Doctrine\ORM\PersistentCollection {#16192 …}
    +violations: Doctrine\ORM\PersistentCollection {#16398 …}
    +notifications: Doctrine\ORM\PersistentCollection {#16397 …}
    +awards: Doctrine\ORM\PersistentCollection {#16394 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#16391 …}
    +categories: Doctrine\ORM\PersistentCollection {#16388 …}
    -id: 41651
    -password: "$2y$13$MR/jvQLw20snj7dhCUOzrerIeJOUi.vmMEXqlAliA6M/KYuWQH.Sa"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#16387 …}
    +apId: "vfrmedia@social.tchncs.de"
    +apProfileId: "https://social.tchncs.de/users/vfrmedia"
    +apPublicUrl: "https://social.tchncs.de/@vfrmedia"
    +apFollowersUrl: "https://social.tchncs.de/users/vfrmedia/followers"
    +apInboxUrl: "https://social.tchncs.de/inbox"
    +apDomain: "social.tchncs.de"
    +apPreferredUsername: "vfrmedia"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: false
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1692636225 {#16009
      date: 2023-08-21 18:43:45.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1692554254 {#16008
      date: 2023-08-20 19:57:34.0 +02:00
    }
  }
  +asLink: true
}
user_avatar App\Twig\Components\UserAvatarComponent 16.0 MiB 0.32 ms
Input props 
[
  "user" => App\Entity\User {#16381
    +avatar: Proxies\__CG__\App\Entity\Image {#16378 …}
    +cover: Proxies\__CG__\App\Entity\Image {#16379 …}
    +email: "TCB13@lemmy.world"
    +username: "@TCB13@lemmy.world"
    +roles: []
    +followersCount: 0
    +homepage: "front"
    +about: ""
    +lastActive: DateTime @1729518803 {#16201
      date: 2024-10-21 15:53:23.0 +02:00
    }
    +markedForDeletionAt: null
    +fields: null
    +oauthGithubId: null
    +oauthGoogleId: null
    +oauthFacebookId: null
    +oauthKeycloakId: null
    +hideAdult: true
    +showSubscribedUsers: true
    +showSubscribedMagazines: true
    +showSubscribedDomains: true
    +preferredLanguages: []
    +featuredMagazines: null
    +showProfileSubscriptions: false
    +showProfileFollowings: true
    +markNewComments: false
    +notifyOnNewEntry: false
    +notifyOnNewEntryReply: true
    +notifyOnNewEntryCommentReply: true
    +notifyOnNewPost: false
    +notifyOnNewPostReply: true
    +notifyOnNewPostCommentReply: true
    +addMentionsEntries: false
    +addMentionsPosts: true
    +isBanned: false
    +isVerified: false
    +isDeleted: false
    +isBot: false
    +spamProtection: true
    +customCss: null
    +ignoreMagazinesCustomCss: false
    +moderatorTokens: Doctrine\ORM\PersistentCollection {#16376 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#16374 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#16372 …}
    +entries: Doctrine\ORM\PersistentCollection {#16370 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#16368 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#16366 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#16364 …}
    +posts: Doctrine\ORM\PersistentCollection {#16362 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#16360 …}
    +postComments: Doctrine\ORM\PersistentCollection {#16358 …}
    +postCommentVotes: Doctrine\ORM\PersistentCollection {#16356 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#16354 …}
    +subscribedDomains: Doctrine\ORM\PersistentCollection {#16352 …}
    +follows: Doctrine\ORM\PersistentCollection {#16350 …}
    +followers: Doctrine\ORM\PersistentCollection {#16348 …}
    +blocks: Doctrine\ORM\PersistentCollection {#16346 …}
    +blockers: Doctrine\ORM\PersistentCollection {#16344 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#16342 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#16340 …}
    +reports: Doctrine\ORM\PersistentCollection {#16338 …}
    +favourites: Doctrine\ORM\PersistentCollection {#16336 …}
    +violations: Doctrine\ORM\PersistentCollection {#16334 …}
    +notifications: Doctrine\ORM\PersistentCollection {#16332 …}
    +awards: Doctrine\ORM\PersistentCollection {#16330 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#16328 …}
    +categories: Doctrine\ORM\PersistentCollection {#16326 …}
    -id: 43677
    -password: "$2y$13$67WvGuLt4FPbc4trvxnH0ODZHTvTlMWI7kaafAJZUzYiSsXw.KDqi"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#16324 …}
    +apId: "TCB13@lemmy.world"
    +apProfileId: "https://lemmy.world/u/TCB13"
    +apPublicUrl: "https://lemmy.world/u/TCB13"
    +apFollowersUrl: null
    +apInboxUrl: "https://lemmy.world/inbox"
    +apDomain: "lemmy.world"
    +apPreferredUsername: "TCB13"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: false
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1729566764 {#16382
      date: 2024-10-22 05:12:44.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1693492241 {#16380
      date: 2023-08-31 16:30:41.0 +02:00
    }
  }
  "width" => 65
  "height" => 65
  "asLink" => true
]
Attributes 
[]
Component 
App\Twig\Components\UserAvatarComponent {#16441
  +width: 65
  +height: 65
  +user: App\Entity\User {#16381
    +avatar: Proxies\__CG__\App\Entity\Image {#16378 …}
    +cover: Proxies\__CG__\App\Entity\Image {#16379 …}
    +email: "TCB13@lemmy.world"
    +username: "@TCB13@lemmy.world"
    +roles: []
    +followersCount: 0
    +homepage: "front"
    +about: ""
    +lastActive: DateTime @1729518803 {#16201
      date: 2024-10-21 15:53:23.0 +02:00
    }
    +markedForDeletionAt: null
    +fields: null
    +oauthGithubId: null
    +oauthGoogleId: null
    +oauthFacebookId: null
    +oauthKeycloakId: null
    +hideAdult: true
    +showSubscribedUsers: true
    +showSubscribedMagazines: true
    +showSubscribedDomains: true
    +preferredLanguages: []
    +featuredMagazines: null
    +showProfileSubscriptions: false
    +showProfileFollowings: true
    +markNewComments: false
    +notifyOnNewEntry: false
    +notifyOnNewEntryReply: true
    +notifyOnNewEntryCommentReply: true
    +notifyOnNewPost: false
    +notifyOnNewPostReply: true
    +notifyOnNewPostCommentReply: true
    +addMentionsEntries: false
    +addMentionsPosts: true
    +isBanned: false
    +isVerified: false
    +isDeleted: false
    +isBot: false
    +spamProtection: true
    +customCss: null
    +ignoreMagazinesCustomCss: false
    +moderatorTokens: Doctrine\ORM\PersistentCollection {#16376 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#16374 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#16372 …}
    +entries: Doctrine\ORM\PersistentCollection {#16370 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#16368 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#16366 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#16364 …}
    +posts: Doctrine\ORM\PersistentCollection {#16362 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#16360 …}
    +postComments: Doctrine\ORM\PersistentCollection {#16358 …}
    +postCommentVotes: Doctrine\ORM\PersistentCollection {#16356 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#16354 …}
    +subscribedDomains: Doctrine\ORM\PersistentCollection {#16352 …}
    +follows: Doctrine\ORM\PersistentCollection {#16350 …}
    +followers: Doctrine\ORM\PersistentCollection {#16348 …}
    +blocks: Doctrine\ORM\PersistentCollection {#16346 …}
    +blockers: Doctrine\ORM\PersistentCollection {#16344 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#16342 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#16340 …}
    +reports: Doctrine\ORM\PersistentCollection {#16338 …}
    +favourites: Doctrine\ORM\PersistentCollection {#16336 …}
    +violations: Doctrine\ORM\PersistentCollection {#16334 …}
    +notifications: Doctrine\ORM\PersistentCollection {#16332 …}
    +awards: Doctrine\ORM\PersistentCollection {#16330 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#16328 …}
    +categories: Doctrine\ORM\PersistentCollection {#16326 …}
    -id: 43677
    -password: "$2y$13$67WvGuLt4FPbc4trvxnH0ODZHTvTlMWI7kaafAJZUzYiSsXw.KDqi"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#16324 …}
    +apId: "TCB13@lemmy.world"
    +apProfileId: "https://lemmy.world/u/TCB13"
    +apPublicUrl: "https://lemmy.world/u/TCB13"
    +apFollowersUrl: null
    +apInboxUrl: "https://lemmy.world/inbox"
    +apDomain: "lemmy.world"
    +apPreferredUsername: "TCB13"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: false
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1729566764 {#16382
      date: 2024-10-22 05:12:44.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1693492241 {#16380
      date: 2023-08-31 16:30:41.0 +02:00
    }
  }
  +asLink: true
}
user_avatar App\Twig\Components\UserAvatarComponent 16.0 MiB 0.38 ms
Input props 
[
  "user" => App\Entity\User {#16125
    +avatar: Proxies\__CG__\App\Entity\Image {#16124 …}
    +cover: null
    +email: "birdcat@lemmy.ml"
    +username: "@birdcat@lemmy.ml"
    +roles: []
    +followersCount: 0
    +homepage: "front"
    +about: """
      Appreciate and upvote every reply to my comments/posts if I can detect any effort being put into it; even if I think you completely missed what I tried to say or strongly disagree with your opinion.\n
      \n
      Occasionally I cannot resist shitposting, hyperbolic, ironic, sarcastic or populist rhetoric; no /s
      """
    +lastActive: DateTime @1696696022 {#16128
      date: 2023-10-07 18:27:02.0 +02:00
    }
    +markedForDeletionAt: null
    +fields: null
    +oauthGithubId: null
    +oauthGoogleId: null
    +oauthFacebookId: null
    +oauthKeycloakId: null
    +hideAdult: true
    +showSubscribedUsers: true
    +showSubscribedMagazines: true
    +showSubscribedDomains: true
    +preferredLanguages: []
    +featuredMagazines: null
    +showProfileSubscriptions: true
    +showProfileFollowings: true
    +markNewComments: false
    +notifyOnNewEntry: false
    +notifyOnNewEntryReply: false
    +notifyOnNewEntryCommentReply: false
    +notifyOnNewPost: false
    +notifyOnNewPostReply: false
    +notifyOnNewPostCommentReply: false
    +addMentionsEntries: false
    +addMentionsPosts: true
    +isBanned: false
    +isVerified: false
    +isDeleted: false
    +isBot: false
    +spamProtection: true
    +customCss: null
    +ignoreMagazinesCustomCss: false
    +moderatorTokens: Doctrine\ORM\PersistentCollection {#16123 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#16121 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#16119 …}
    +entries: Doctrine\ORM\PersistentCollection {#16117 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#16115 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#16113 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#16111 …}
    +posts: Doctrine\ORM\PersistentCollection {#16109 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#16107 …}
    +postComments: Doctrine\ORM\PersistentCollection {#16105 …}
    +postCommentVotes: Doctrine\ORM\PersistentCollection {#16103 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#16101 …}
    +subscribedDomains: Doctrine\ORM\PersistentCollection {#16099 …}
    +follows: Doctrine\ORM\PersistentCollection {#16097 …}
    +followers: Doctrine\ORM\PersistentCollection {#16095 …}
    +blocks: Doctrine\ORM\PersistentCollection {#16093 …}
    +blockers: Doctrine\ORM\PersistentCollection {#16091 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#16089 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#16087 …}
    +reports: Doctrine\ORM\PersistentCollection {#16085 …}
    +favourites: Doctrine\ORM\PersistentCollection {#16083 …}
    +violations: Doctrine\ORM\PersistentCollection {#16081 …}
    +notifications: Doctrine\ORM\PersistentCollection {#16079 …}
    +awards: Doctrine\ORM\PersistentCollection {#16077 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#16075 …}
    +categories: Doctrine\ORM\PersistentCollection {#16073 …}
    -id: 21796
    -password: "$2y$13$ACNmoGKWwRgm/Njn146GG.b25O8.XXYtlu6ZukGNMl7KWiROcYuzK"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#16071 …}
    +apId: "birdcat@lemmy.ml"
    +apProfileId: "https://lemmy.ml/u/birdcat"
    +apPublicUrl: "https://lemmy.ml/u/birdcat"
    +apFollowersUrl: null
    +apInboxUrl: "https://lemmy.ml/inbox"
    +apDomain: "lemmy.ml"
    +apPreferredUsername: "birdcat"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: false
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1719824521 {#16127
      date: 2024-07-01 11:02:01.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1689039812 {#16126
      date: 2023-07-11 03:43:32.0 +02:00
    }
  }
  "width" => 65
  "height" => 65
  "asLink" => true
]
Attributes 
[]
Component 
App\Twig\Components\UserAvatarComponent {#16498
  +width: 65
  +height: 65
  +user: App\Entity\User {#16125
    +avatar: Proxies\__CG__\App\Entity\Image {#16124 …}
    +cover: null
    +email: "birdcat@lemmy.ml"
    +username: "@birdcat@lemmy.ml"
    +roles: []
    +followersCount: 0
    +homepage: "front"
    +about: """
      Appreciate and upvote every reply to my comments/posts if I can detect any effort being put into it; even if I think you completely missed what I tried to say or strongly disagree with your opinion.\n
      \n
      Occasionally I cannot resist shitposting, hyperbolic, ironic, sarcastic or populist rhetoric; no /s
      """
    +lastActive: DateTime @1696696022 {#16128
      date: 2023-10-07 18:27:02.0 +02:00
    }
    +markedForDeletionAt: null
    +fields: null
    +oauthGithubId: null
    +oauthGoogleId: null
    +oauthFacebookId: null
    +oauthKeycloakId: null
    +hideAdult: true
    +showSubscribedUsers: true
    +showSubscribedMagazines: true
    +showSubscribedDomains: true
    +preferredLanguages: []
    +featuredMagazines: null
    +showProfileSubscriptions: true
    +showProfileFollowings: true
    +markNewComments: false
    +notifyOnNewEntry: false
    +notifyOnNewEntryReply: false
    +notifyOnNewEntryCommentReply: false
    +notifyOnNewPost: false
    +notifyOnNewPostReply: false
    +notifyOnNewPostCommentReply: false
    +addMentionsEntries: false
    +addMentionsPosts: true
    +isBanned: false
    +isVerified: false
    +isDeleted: false
    +isBot: false
    +spamProtection: true
    +customCss: null
    +ignoreMagazinesCustomCss: false
    +moderatorTokens: Doctrine\ORM\PersistentCollection {#16123 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#16121 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#16119 …}
    +entries: Doctrine\ORM\PersistentCollection {#16117 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#16115 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#16113 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#16111 …}
    +posts: Doctrine\ORM\PersistentCollection {#16109 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#16107 …}
    +postComments: Doctrine\ORM\PersistentCollection {#16105 …}
    +postCommentVotes: Doctrine\ORM\PersistentCollection {#16103 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#16101 …}
    +subscribedDomains: Doctrine\ORM\PersistentCollection {#16099 …}
    +follows: Doctrine\ORM\PersistentCollection {#16097 …}
    +followers: Doctrine\ORM\PersistentCollection {#16095 …}
    +blocks: Doctrine\ORM\PersistentCollection {#16093 …}
    +blockers: Doctrine\ORM\PersistentCollection {#16091 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#16089 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#16087 …}
    +reports: Doctrine\ORM\PersistentCollection {#16085 …}
    +favourites: Doctrine\ORM\PersistentCollection {#16083 …}
    +violations: Doctrine\ORM\PersistentCollection {#16081 …}
    +notifications: Doctrine\ORM\PersistentCollection {#16079 …}
    +awards: Doctrine\ORM\PersistentCollection {#16077 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#16075 …}
    +categories: Doctrine\ORM\PersistentCollection {#16073 …}
    -id: 21796
    -password: "$2y$13$ACNmoGKWwRgm/Njn146GG.b25O8.XXYtlu6ZukGNMl7KWiROcYuzK"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#16071 …}
    +apId: "birdcat@lemmy.ml"
    +apProfileId: "https://lemmy.ml/u/birdcat"
    +apPublicUrl: "https://lemmy.ml/u/birdcat"
    +apFollowersUrl: null
    +apInboxUrl: "https://lemmy.ml/inbox"
    +apDomain: "lemmy.ml"
    +apPreferredUsername: "birdcat"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: false
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1719824521 {#16127
      date: 2024-07-01 11:02:01.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1689039812 {#16126
      date: 2023-07-11 03:43:32.0 +02:00
    }
  }
  +asLink: true
}
related_categories App\Twig\Components\RelatedCategoriesComponent 16.0 MiB 3.03 ms
Input props 
[
  "magazine" => "askelectronics@discuss.tchncs.de"
  "tag" => null
]
Attributes 
[]
Component 
App\Twig\Components\RelatedCategoriesComponent {#16560
  +limit: 4
  +tag: null
  +magazine: "askelectronics@discuss.tchncs.de"
  +type: "related"
  +title: "related_categories"
  +refreshedRandom: false
  -repository: App\Repository\CategoryRepository {#16561 …}
  -cache: Symfony\Component\Cache\Adapter\TraceableTagAwareAdapter {#600 …}
  -twig: Twig\Environment {#1252 …}
  -requestStack: Symfony\Component\HttpFoundation\RequestStack {#1328 …}
}
related_posts App\Twig\Components\RelatedPostsComponent 16.0 MiB 6.62 ms
Input props 
[
  "magazine" => "askelectronics@discuss.tchncs.de"
  "tag" => null
]
Attributes 
[]
Component 
App\Twig\Components\RelatedPostsComponent {#16637
  +limit: 4
  +tag: null
  +magazine: "askelectronics@discuss.tchncs.de"
  +type: "magazine"
  +post: null
  +title: "related_posts"
  +refreshedRandom: false
  -repository: App\Repository\PostRepository {#16638 …}
  -cache: Symfony\Component\Cache\Adapter\TraceableTagAwareAdapter {#600 …}
  -twig: Twig\Environment {#1252 …}
  -requestStack: Symfony\Component\HttpFoundation\RequestStack {#1328 …}
  -mentionManager: App\Service\MentionManager {#390 …}
}
related_entries App\Twig\Components\RelatedEntriesComponent 16.0 MiB 15.09 ms
Input props 
[
  "magazine" => "askelectronics@discuss.tchncs.de"
  "tag" => null
]
Attributes 
[]
Component 
App\Twig\Components\RelatedEntriesComponent {#16758
  +limit: 4
  +tag: null
  +magazine: "askelectronics@discuss.tchncs.de"
  +type: "magazine"
  +entry: null
  +title: "related_entries"
  +refreshedRandom: false
  -repository: App\Repository\EntryRepository {#271 …}
  -cache: Symfony\Component\Cache\Adapter\TraceableTagAwareAdapter {#600 …}
  -twig: Twig\Environment {#1252 …}
  -requestStack: Symfony\Component\HttpFoundation\RequestStack {#1328 …}
  -mentionManager: App\Service\MentionManager {#390 …}
}
support_us_block App\Twig\Components\SupportUsBlock 16.0 MiB 0.29 ms
Input props 
[]
Attributes 
[]
Component 
App\Twig\Components\SupportUsBlock {#16813
  +subject: ? App\Entity\Contracts\VotableInterface
  +url: ? string
  -twig: Twig\Environment {#1252 …}
  -cache: Symfony\Component\Cache\Adapter\TraceableTagAwareAdapter {#600 …}
  -requestStack: Symfony\Component\HttpFoundation\RequestStack {#1328 …}
  -partnerBlockRepository: App\Repository\PartnerBlockRepository {#16812 …}
}
featured_magazines App\Twig\Components\FeaturedMagazinesComponent 16.0 MiB 0.88 ms
Input props 
[
  "magazine" => App\Entity\Magazine {#266
    +icon: Proxies\__CG__\App\Entity\Image {#247 …}
    +name: "askelectronics@discuss.tchncs.de"
    +title: "askelectronics"
    +description: """
      **For questions about component-level electronic circuits, tools and equipment.**\n
      \n
      Rules\n
      -----\n
      \n
      1: Be nice.\n
      \n
      2: Be on-topic (eg: *Electronic*, not *electrical*).\n
      \n
      3: No commercial stuff, buying, selling or valuations.\n
      \n
      4: Be safe.\n
      \n
      ---
      """
    +rules: null
    +subscriptionsCount: 1
    +entryCount: 154
    +entryCommentCount: 1230
    +postCount: 1
    +postCommentCount: 4
    +isAdult: false
    +customCss: null
    +lastActive: DateTime @1729413608 {#276
      date: 2024-10-20 10:40:08.0 +02:00
    }
    +markedForDeletionAt: null
    +tags: null
    +moderators: Doctrine\ORM\PersistentCollection {#238 …}
    +ownershipRequests: Doctrine\ORM\PersistentCollection {#234 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#223 …}
    +entries: Doctrine\ORM\PersistentCollection {#181 …}
    +posts: Doctrine\ORM\PersistentCollection {#139 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#201 …}
    +bans: Doctrine\ORM\PersistentCollection {#118 …}
    +reports: Doctrine\ORM\PersistentCollection {#104 …}
    +badges: Doctrine\ORM\PersistentCollection {#82 …}
    +logs: Doctrine\ORM\PersistentCollection {#72 …}
    +awards: Doctrine\ORM\PersistentCollection {#61 …}
    +categories: Doctrine\ORM\PersistentCollection {#1820 …}
    -id: 11
    +apId: "askelectronics@discuss.tchncs.de"
    +apProfileId: "https://discuss.tchncs.de/c/askelectronics"
    +apPublicUrl: "https://discuss.tchncs.de/c/askelectronics"
    +apFollowersUrl: "https://discuss.tchncs.de/c/askelectronics/followers"
    +apInboxUrl: "https://discuss.tchncs.de/inbox"
    +apDomain: "discuss.tchncs.de"
    +apPreferredUsername: "askelectronics"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: null
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1727247714 {#270
      date: 2024-09-25 09:01:54.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1687144409 {#272
      date: 2023-06-19 05:13:29.0 +02:00
    }
  }
]
Attributes 
[]
Component 
App\Twig\Components\FeaturedMagazinesComponent {#16888
  +magazine: App\Entity\Magazine {#266
    +icon: Proxies\__CG__\App\Entity\Image {#247 …}
    +name: "askelectronics@discuss.tchncs.de"
    +title: "askelectronics"
    +description: """
      **For questions about component-level electronic circuits, tools and equipment.**\n
      \n
      Rules\n
      -----\n
      \n
      1: Be nice.\n
      \n
      2: Be on-topic (eg: *Electronic*, not *electrical*).\n
      \n
      3: No commercial stuff, buying, selling or valuations.\n
      \n
      4: Be safe.\n
      \n
      ---
      """
    +rules: null
    +subscriptionsCount: 1
    +entryCount: 154
    +entryCommentCount: 1230
    +postCount: 1
    +postCommentCount: 4
    +isAdult: false
    +customCss: null
    +lastActive: DateTime @1729413608 {#276
      date: 2024-10-20 10:40:08.0 +02:00
    }
    +markedForDeletionAt: null
    +tags: null
    +moderators: Doctrine\ORM\PersistentCollection {#238 …}
    +ownershipRequests: Doctrine\ORM\PersistentCollection {#234 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#223 …}
    +entries: Doctrine\ORM\PersistentCollection {#181 …}
    +posts: Doctrine\ORM\PersistentCollection {#139 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#201 …}
    +bans: Doctrine\ORM\PersistentCollection {#118 …}
    +reports: Doctrine\ORM\PersistentCollection {#104 …}
    +badges: Doctrine\ORM\PersistentCollection {#82 …}
    +logs: Doctrine\ORM\PersistentCollection {#72 …}
    +awards: Doctrine\ORM\PersistentCollection {#61 …}
    +categories: Doctrine\ORM\PersistentCollection {#1820 …}
    -id: 11
    +apId: "askelectronics@discuss.tchncs.de"
    +apProfileId: "https://discuss.tchncs.de/c/askelectronics"
    +apPublicUrl: "https://discuss.tchncs.de/c/askelectronics"
    +apFollowersUrl: "https://discuss.tchncs.de/c/askelectronics/followers"
    +apInboxUrl: "https://discuss.tchncs.de/inbox"
    +apDomain: "discuss.tchncs.de"
    +apPreferredUsername: "askelectronics"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: null
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1727247714 {#270
      date: 2024-09-25 09:01:54.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1687144409 {#272
      date: 2023-06-19 05:13:29.0 +02:00
    }
  }
  -twig: Twig\Environment {#1252 …}
  -repository: App\Repository\MagazineRepository {#334 …}
}