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

Response
200 OK
IP
216.73.216.247
Profiled on
Token
a1037c

Components

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

Components

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"App\Twig\Components\UserAvatarComponent"
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Render calls

entry App\Twig\Components\EntryComponent 12.0 MiB 36.28 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$!\n
      \n
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        **For questions about component-level electronic circuits, tools and equipment.**\n
        \n
        Rules\n
        -----\n
        \n
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        \n
        2: Be on-topic (eg: *Electronic*, not *electrical*).\n
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        \n
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    +body: """
      So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\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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}
user_inline App\Twig\Components\UserInlineComponent 12.0 MiB 0.28 ms
Input props 
[
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Attributes 
[]
Component 
App\Twig\Components\UserInlineComponent {#3123
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date App\Twig\Components\DateComponent 12.0 MiB 0.21 ms
Input props 
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]
Attributes 
[]
Component 
App\Twig\Components\DateComponent {#3193
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}
date_edited App\Twig\Components\DateEditedComponent 12.0 MiB 0.14 ms
Input props 
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Attributes 
[]
Component 
App\Twig\Components\DateEditedComponent {#3257
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vote App\Twig\Components\VoteComponent 12.0 MiB 0.43 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$!\n
      \n
      However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
      \n
      I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
      \n
      Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
      \n
      Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
      """
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Attributes 
[]
Component 
App\Twig\Components\VoteComponent {#3322
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\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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      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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          \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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      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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          **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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    +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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        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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      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
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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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        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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        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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      +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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        +root: App\Entity\EntryComment {#4027}
        +body: "LFP cells have excellent cycle life anyway (2000+ cycles); is it worth worrying about staying at 95%?"
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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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    180870 => App\Entity\EntryComment {#4242}
    181227 => App\Entity\EntryComment {#4292
      +user: Proxies\__CG__\App\Entity\User {#4295
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        +moderatorTokens: Doctrine\ORM\PersistentCollection {#6572 …}
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         …2
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      +entry: App\Entity\Entry {#2388}
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    185023 => App\Entity\EntryComment {#4311}
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      }
      +entry: App\Entity\Entry {#2388}
      +magazine: App\Entity\Magazine {#266}
      +image: null
      +parent: App\Entity\EntryComment {#4242}
      +root: App\Entity\EntryComment {#4027}
      +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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      +children: Doctrine\ORM\PersistentCollection {#4328 …}
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    }
    215021 => App\Entity\EntryComment {#4407
      +user: App\Entity\User {#4157}
      +entry: App\Entity\Entry {#2388}
      +magazine: App\Entity\Magazine {#266}
      +image: null
      +parent: App\Entity\EntryComment {#4381}
      +root: App\Entity\EntryComment {#4027}
      +body: "It is in no way tricky. Simply apply a constant voltage."
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      ]
      +children: Doctrine\ORM\PersistentCollection {#4399 …}
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    }
    215304 => App\Entity\EntryComment {#4429
      +user: Proxies\__CG__\App\Entity\User {#4243 …2}
      +entry: App\Entity\Entry {#2388}
      +magazine: App\Entity\Magazine {#266}
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      +parent: App\Entity\EntryComment {#4407}
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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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        "@HewlettHackard@lemmy.ca"
        "@Eheran@lemmy.world"
      ]
      +children: Doctrine\ORM\PersistentCollection {#4421 …}
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  ]
  +level: 1
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  -entryCommentRepository: App\Repository\EntryCommentRepository {#557 …}
  -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 12.81 ms
Input props 
[
  "comment" => App\Entity\EntryComment {#4228
    +user: Proxies\__CG__\App\Entity\User {#1943
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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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        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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      +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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      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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date App\Twig\Components\DateComponent 12.0 MiB 0.17 ms
Input props 
[
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]
Attributes 
[]
Component 
App\Twig\Components\DateComponent {#5227
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    date: 2023-12-01 07:22:41.0 +01:00
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}
date_edited App\Twig\Components\DateEditedComponent 12.0 MiB 0.09 ms
Input props 
[
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  "editedAt" => null
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Attributes 
[]
Component 
App\Twig\Components\DateEditedComponent {#5281
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    date: 2023-12-01 07:22:41.0 +01:00
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}
user_avatar App\Twig\Components\UserAvatarComponent 12.0 MiB 0.14 ms
Input props 
[
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]
Attributes 
[]
Component 
App\Twig\Components\UserAvatarComponent {#5335
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vote App\Twig\Components\VoteComponent 12.0 MiB 0.43 ms
Input props 
[
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        +name: "askelectronics@discuss.tchncs.de"
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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
          \n
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      +image: null
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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
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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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      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
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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
      \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
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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
        \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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        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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      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
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      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
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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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      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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      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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          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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      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
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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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date App\Twig\Components\DateComponent 12.0 MiB 0.14 ms
Input props 
[
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    date: 2023-11-30 15:08:51.0 +01:00
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]
Attributes 
[]
Component 
App\Twig\Components\DateComponent {#5942
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    date: 2023-11-30 15:08:51.0 +01:00
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}
date_edited App\Twig\Components\DateEditedComponent 12.0 MiB 0.09 ms
Input props 
[
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    date: 2023-11-30 15:08:51.0 +01:00
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  "editedAt" => null
]
Attributes 
[]
Component 
App\Twig\Components\DateEditedComponent {#5996
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    date: 2023-11-30 15:08:51.0 +01:00
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  +editedAt: null
}
user_avatar App\Twig\Components\UserAvatarComponent 12.0 MiB 0.15 ms
Input props 
[
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]
Attributes 
[]
Component 
App\Twig\Components\UserAvatarComponent {#6050
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vote App\Twig\Components\VoteComponent 12.0 MiB 0.94 ms
Input props 
[
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      }
      +magazine: App\Entity\Magazine {#266
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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
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          \n
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      +image: null
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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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        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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        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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    +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
        \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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        +createdAt: DateTimeImmutable @1701346775 {#3972
          date: 2023-11-30 13:19:35.0 +01:00
        }
      }
      +root: App\Entity\EntryComment {#4027}
      +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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      +isAdult: false
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        date: 2023-11-30 15:08:51.0 +01:00
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      +ip: null
      +tags: null
      +mentions: [
        "@Saigonauticon@voltage.vn"
        "@ignotum@lemmy.world"
      ]
      +children: Doctrine\ORM\PersistentCollection {#4244 …}
      +nested: Doctrine\ORM\PersistentCollection {#4246 …}
      +votes: Doctrine\ORM\PersistentCollection {#4248 …}
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      +createdAt: DateTimeImmutable @1701353331 {#4241
        date: 2023-11-30 15:08:51.0 +01:00
      }
    }
    +root: App\Entity\EntryComment {#4027}
    +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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      "@ignotum@lemmy.world"
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    +nested: Doctrine\ORM\PersistentCollection {#4301 …}
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  +level: 3
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  -requestStack: Symfony\Component\HttpFoundation\RequestStack {#1328 …}
  -authorizationChecker: Symfony\Component\Security\Core\Authorization\AuthorizationChecker {#931 …}
}
user_inline App\Twig\Components\UserInlineComponent 12.0 MiB 3.13 ms
Input props 
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Component 
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date App\Twig\Components\DateComponent 12.0 MiB 0.14 ms
Input props 
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]
Attributes 
[]
Component 
App\Twig\Components\DateComponent {#6645
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}
date_edited App\Twig\Components\DateEditedComponent 12.0 MiB 0.09 ms
Input props 
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Attributes 
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Component 
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Input props 
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]
Attributes 
[]
Component 
App\Twig\Components\UserAvatarComponent {#6753
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vote App\Twig\Components\VoteComponent 12.0 MiB 0.48 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
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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
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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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    +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
        \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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          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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        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
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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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      +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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    +root: App\Entity\EntryComment {#4027}
    +body: "LFP cells have excellent cycle life anyway (2000+ cycles); is it worth worrying about staying at 95%?"
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Input props 
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vote App\Twig\Components\VoteComponent 12.0 MiB 2.73 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
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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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        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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      +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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        +name: "askelectronics@discuss.tchncs.de"
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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
          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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        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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        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: "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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      +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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        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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            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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vote App\Twig\Components\VoteComponent 12.0 MiB 0.47 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
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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"
      +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: "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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        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: "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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            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: """
            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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        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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              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: "It is in no way tricky. Simply apply a constant voltage."
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Component 
App\Twig\Components\UserAvatarComponent {#8541
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vote App\Twig\Components\VoteComponent 12.0 MiB 0.60 ms
Input props 
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         …2
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          \n
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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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            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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          **For questions about component-level electronic circuits, tools and equipment.**\n
          \n
          Rules\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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        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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        +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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              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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        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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entry_comment App\Twig\Components\EntryCommentComponent 12.0 MiB 19.70 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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                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: "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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        +score: 0
        +lastActive: DateTime @1701452810 {#4382
          date: 2023-12-01 18:46:50.0 +01:00
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        +ip: null
        +tags: null
        +mentions: [
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          "@ignotum@lemmy.world"
          "@nilloc@discuss.tchncs.de"
          "@HewlettHackard@lemmy.ca"
        ]
        +children: Doctrine\ORM\PersistentCollection {#4377 …}
        +nested: Doctrine\ORM\PersistentCollection {#4372 …}
        +votes: Doctrine\ORM\PersistentCollection {#4376 …}
        +reports: Doctrine\ORM\PersistentCollection {#4386 …}
        +favourites: Doctrine\ORM\PersistentCollection {#4388 …}
        +notifications: Doctrine\ORM\PersistentCollection {#4390 …}
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        +editedAt: null
        +createdAt: DateTimeImmutable @1701452810 {#4385
          date: 2023-12-01 18:46:50.0 +01:00
        }
      }
      +root: App\Entity\EntryComment {#4027}
      +body: "It is in no way tricky. Simply apply a constant voltage."
      +lang: "en"
      +isAdult: false
      +favouriteCount: 0
      +score: 0
      +lastActive: DateTime @1702158765 {#4402
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      }
      +ip: null
      +tags: null
      +mentions: [
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        "@ignotum@lemmy.world"
        "@nilloc@discuss.tchncs.de"
        "@HewlettHackard@lemmy.ca"
      ]
      +children: Doctrine\ORM\PersistentCollection {#4399 …}
      +nested: Doctrine\ORM\PersistentCollection {#4396 …}
      +votes: Doctrine\ORM\PersistentCollection {#4394 …}
      +reports: Doctrine\ORM\PersistentCollection {#4408 …}
      +favourites: Doctrine\ORM\PersistentCollection {#4410 …}
      +notifications: Doctrine\ORM\PersistentCollection {#4412 …}
      -id: 215021
      -bodyTs: "'appli':8 'constant':10 'simpli':7 'tricki':6 'voltag':11 'way':5"
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      +editedAt: null
      +createdAt: DateTimeImmutable @1702158765 {#4405
        date: 2023-12-09 22:52:45.0 +01:00
      }
    }
    +root: App\Entity\EntryComment {#4027}
    +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."
    +lang: "en"
    +isAdult: false
    +favouriteCount: 0
    +score: 0
    +lastActive: DateTime @1702165552 {#4424
      date: 2023-12-10 00:45:52.0 +01:00
    }
    +ip: null
    +tags: null
    +mentions: [
      "@Saigonauticon@voltage.vn"
      "@ignotum@lemmy.world"
      "@nilloc@discuss.tchncs.de"
      "@HewlettHackard@lemmy.ca"
      "@Eheran@lemmy.world"
    ]
    +children: Doctrine\ORM\PersistentCollection {#4421 …}
    +nested: Doctrine\ORM\PersistentCollection {#4418 …}
    +votes: Doctrine\ORM\PersistentCollection {#4416 …}
    +reports: Doctrine\ORM\PersistentCollection {#4430 …}
    +favourites: Doctrine\ORM\PersistentCollection {#4432 …}
    +notifications: Doctrine\ORM\PersistentCollection {#4434 …}
    -id: 215304
    -bodyTs: "'40':22 '90':24 'capac':38 'full':30 'increas':19 'iron':12 'like':21 'limit':35 'lithium':11 'near':33 'point':9 'ramp':27 'right':8,32 'small':17 'stop':5 'tricki':3 'voltag':18,31"
    +ranking: 0
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    +editedAt: null
    +createdAt: DateTimeImmutable @1702165552 {#4427
      date: 2023-12-10 00:45:52.0 +01:00
    }
  }
  +showMagazineName: false
  +showEntryTitle: false
  +showNested: true
  +level: 6
  +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 0.16 ms
Input props 
[
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    +avatar: null
    +cover: null
    +email: "nilloc@discuss.tchncs.de"
    +username: "@nilloc@discuss.tchncs.de"
    +roles: []
    +followersCount: 0
    +homepage: "front"
    +about: null
    +lastActive: DateTime @1729522216 {#5864
      date: 2024-10-21 16:50:16.0 +02:00
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    +markedForDeletionAt: null
    +fields: null
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    +showSubscribedUsers: true
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    +preferredLanguages: []
    +featuredMagazines: null
    +showProfileSubscriptions: true
    +showProfileFollowings: true
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    +notifyOnNewEntry: false
    +notifyOnNewEntryReply: false
    +notifyOnNewEntryCommentReply: false
    +notifyOnNewPost: false
    +notifyOnNewPostReply: false
    +notifyOnNewPostCommentReply: false
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    +addMentionsPosts: true
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    +isBot: false
    +spamProtection: true
    +customCss: null
    +ignoreMagazinesCustomCss: false
    +moderatorTokens: Doctrine\ORM\PersistentCollection {#5869 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#5872 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#5874 …}
    +entries: Doctrine\ORM\PersistentCollection {#5876 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#5878 …}
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  "showAvatar" => false
]
Attributes 
[]
Component 
App\Twig\Components\UserInlineComponent {#9007
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    +avatar: null
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    +markedForDeletionAt: null
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    +spamProtection: true
    +customCss: null
    +ignoreMagazinesCustomCss: false
    +moderatorTokens: Doctrine\ORM\PersistentCollection {#5869 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#5872 …}
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    +entries: Doctrine\ORM\PersistentCollection {#5876 …}
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date App\Twig\Components\DateComponent 12.0 MiB 0.13 ms
Input props 
[
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    date: 2023-12-10 00:45:52.0 +01:00
  }
]
Attributes 
[]
Component 
App\Twig\Components\DateComponent {#9062
  +date: DateTimeImmutable @1702165552 {#4427
    date: 2023-12-10 00:45:52.0 +01:00
  }
}
date_edited App\Twig\Components\DateEditedComponent 12.0 MiB 0.09 ms
Input props 
[
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    date: 2023-12-10 00:45:52.0 +01:00
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  "editedAt" => null
]
Attributes 
[]
Component 
App\Twig\Components\DateEditedComponent {#9116
  +createdAt: DateTimeImmutable @1702165552 {#4427
    date: 2023-12-10 00:45:52.0 +01:00
  }
  +editedAt: null
}
user_avatar App\Twig\Components\UserAvatarComponent 12.0 MiB 0.16 ms
Input props 
[
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    +avatar: null
    +cover: null
    +email: "nilloc@discuss.tchncs.de"
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    +lastActive: DateTime @1729522216 {#5864
      date: 2024-10-21 16:50:16.0 +02:00
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    +markedForDeletionAt: null
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    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#5922 …}
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     …2
  }
  "width" => 40
  "height" => 40
  "asLink" => true
]
Attributes 
[]
Component 
App\Twig\Components\UserAvatarComponent {#9170
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  +height: 40
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    +avatar: null
    +cover: null
    +email: "nilloc@discuss.tchncs.de"
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    +lastActive: DateTime @1729522216 {#5864
      date: 2024-10-21 16:50:16.0 +02:00
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    +markedForDeletionAt: null
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    +customCss: null
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    +moderatorTokens: Doctrine\ORM\PersistentCollection {#5869 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#5872 …}
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    +entries: Doctrine\ORM\PersistentCollection {#5876 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#5878 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#5880 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#5882 …}
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vote App\Twig\Components\VoteComponent 12.0 MiB 0.61 ms
Input props 
[
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    +user: Proxies\__CG__\App\Entity\User {#4243
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      +markedForDeletionAt: 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
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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: "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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]
Attributes 
[]
Component 
App\Twig\Components\VoteComponent {#9239
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      +magazine: App\Entity\Magazine {#266
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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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        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 9.08 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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                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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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
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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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      +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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        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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    +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
        \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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    +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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App\Twig\Components\UserAvatarComponent {#9843
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vote App\Twig\Components\VoteComponent 12.0 MiB 0.51 ms
Input props 
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         …2
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          \n
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      +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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        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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      +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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          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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          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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    +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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    +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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      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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      > 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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      +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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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
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        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
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        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
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        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
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        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
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      Take a look at [Battery University](https://batteryuniversity.com/article/bu-206-lithium-polymer-substance-or-hype), I think it’s a great resource.\n
      \n
      On the topic of lithium polymer charging, it has this to say:\n
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      > Charge and discharge characteristics of Li-polymer are identical to other Li-ion systems and do not require a dedicated charger. Safety issues are also similar in that protection circuits are needed. Gas buildup during charge can cause some prismatic and pouch cells to swell, and equipment manufacturers must make allowances for expansion. Li-polymer in a foil package may be less durable than Li-ion in the cylindrical package.
      """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\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
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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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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
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        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
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        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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      > Charge and discharge characteristics of Li-polymer are identical to other Li-ion systems and do not require a dedicated charger. Safety issues are also similar in that protection circuits are needed. Gas buildup during charge can cause some prismatic and pouch cells to swell, and equipment manufacturers must make allowances for expansion. Li-polymer in a foil package may be less durable than Li-ion in the cylindrical package.
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
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      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"
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
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        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
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        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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      Take a look at [Battery University](https://batteryuniversity.com/article/bu-206-lithium-polymer-substance-or-hype), I think it’s a great resource.\n
      \n
      On the topic of lithium polymer charging, it has this to say:\n
      \n
      > Charge and discharge characteristics of Li-polymer are identical to other Li-ion systems and do not require a dedicated charger. Safety issues are also similar in that protection circuits are needed. Gas buildup during charge can cause some prismatic and pouch cells to swell, and equipment manufacturers must make allowances for expansion. Li-polymer in a foil package may be less durable than Li-ion in the cylindrical package.
      """
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          \n
          Rules\n
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\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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      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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          Rules\n
          -----\n
          \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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        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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      +entry: App\Entity\Entry {#2388}
      +magazine: App\Entity\Magazine {#266}
      +image: null
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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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    +root: App\Entity\EntryComment {#4059}
    +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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user_inline App\Twig\Components\UserInlineComponent 12.0 MiB 0.16 ms
Input props 
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Input props 
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Attributes 
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Component 
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Component 
App\Twig\Components\DateEditedComponent {#11100
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Attributes 
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Component 
App\Twig\Components\UserAvatarComponent {#11154
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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
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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
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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
        \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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        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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        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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        > 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
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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
        \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
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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
        \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
        \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
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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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        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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        +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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user_inline App\Twig\Components\UserInlineComponent 12.0 MiB 0.15 ms
Input props 
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Component 
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Input props 
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Attributes 
[]
Component 
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date_edited App\Twig\Components\DateEditedComponent 12.0 MiB 0.09 ms
Input props 
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Attributes 
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Component 
App\Twig\Components\DateEditedComponent {#11753
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Input props 
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Attributes 
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Component 
App\Twig\Components\UserAvatarComponent {#11807
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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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        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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        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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        +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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          4: Be safe.\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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          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
        \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"
      +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$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
        \n
        I whipped up a 5V system with a buck converter managed by an MCU. It turns off the buck converter that charges the battery, measures the battery voltage, and if it’s under 3.6V it enables the buck converter. Repeats every few 100s of milliseconds.\n
        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
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      Get a board with a TP5000. [Like this one here](https://www.aliexpress.com/item/1005004950011414.html).\n
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    +favourites: Doctrine\ORM\PersistentCollection {#4198 …}
    +violations: Doctrine\ORM\PersistentCollection {#4200 …}
    +notifications: Doctrine\ORM\PersistentCollection {#4202 …}
    +awards: Doctrine\ORM\PersistentCollection {#4204 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#4206 …}
    +categories: Doctrine\ORM\PersistentCollection {#4208 …}
    -id: 35879
    -password: "$2y$13$8ubyFNe40NAtu6WljxMBfelK9IPb.SwGjMyECN1ANPRiYEFsAmkAS"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#4210 …}
    +apId: "Eheran@lemmy.world"
    +apProfileId: "https://lemmy.world/u/Eheran"
    +apPublicUrl: "https://lemmy.world/u/Eheran"
    +apFollowersUrl: null
    +apInboxUrl: "https://lemmy.world/inbox"
    +apDomain: "lemmy.world"
    +apPreferredUsername: "Eheran"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: false
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1729126688 {#4142
      date: 2024-10-17 02:58:08.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1690486356 {#4143
      date: 2023-07-27 21:32:36.0 +02:00
    }
  }
  "showAvatar" => false
]
Attributes 
[]
Component 
App\Twig\Components\UserInlineComponent {#12305
  +user: App\Entity\User {#4157
    +avatar: null
    +cover: null
    +email: "Eheran@lemmy.world"
    +username: "@Eheran@lemmy.world"
    +roles: []
    +followersCount: 0
    +homepage: "front"
    +about: null
    +lastActive: DateTime @1726741249 {#4141
      date: 2024-09-19 12:20:49.0 +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 {#4158 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#4160 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#4162 …}
    +entries: Doctrine\ORM\PersistentCollection {#4164 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#4166 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#4168 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#4170 …}
    +posts: Doctrine\ORM\PersistentCollection {#4172 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#4174 …}
    +postComments: Doctrine\ORM\PersistentCollection {#4176 …}
    +postCommentVotes: Doctrine\ORM\PersistentCollection {#4178 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#4180 …}
    +subscribedDomains: Doctrine\ORM\PersistentCollection {#4182 …}
    +follows: Doctrine\ORM\PersistentCollection {#4184 …}
    +followers: Doctrine\ORM\PersistentCollection {#4186 …}
    +blocks: Doctrine\ORM\PersistentCollection {#4188 …}
    +blockers: Doctrine\ORM\PersistentCollection {#4190 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#4192 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#4194 …}
    +reports: Doctrine\ORM\PersistentCollection {#4196 …}
    +favourites: Doctrine\ORM\PersistentCollection {#4198 …}
    +violations: Doctrine\ORM\PersistentCollection {#4200 …}
    +notifications: Doctrine\ORM\PersistentCollection {#4202 …}
    +awards: Doctrine\ORM\PersistentCollection {#4204 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#4206 …}
    +categories: Doctrine\ORM\PersistentCollection {#4208 …}
    -id: 35879
    -password: "$2y$13$8ubyFNe40NAtu6WljxMBfelK9IPb.SwGjMyECN1ANPRiYEFsAmkAS"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#4210 …}
    +apId: "Eheran@lemmy.world"
    +apProfileId: "https://lemmy.world/u/Eheran"
    +apPublicUrl: "https://lemmy.world/u/Eheran"
    +apFollowersUrl: null
    +apInboxUrl: "https://lemmy.world/inbox"
    +apDomain: "lemmy.world"
    +apPreferredUsername: "Eheran"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: false
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1729126688 {#4142
      date: 2024-10-17 02:58:08.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1690486356 {#4143
      date: 2023-07-27 21:32:36.0 +02:00
    }
  }
  +showAvatar: false
}
date App\Twig\Components\DateComponent 12.0 MiB 0.18 ms
Input props 
[
  "date" => DateTimeImmutable @1702158537 {#4140
    date: 2023-12-09 22:48:57.0 +01:00
  }
]
Attributes 
[]
Component 
App\Twig\Components\DateComponent {#12360
  +date: DateTimeImmutable @1702158537 {#4140
    date: 2023-12-09 22:48:57.0 +01:00
  }
}
date_edited App\Twig\Components\DateEditedComponent 12.0 MiB 0.11 ms
Input props 
[
  "createdAt" => DateTimeImmutable @1702158537 {#4140
    date: 2023-12-09 22:48:57.0 +01:00
  }
  "editedAt" => null
]
Attributes 
[]
Component 
App\Twig\Components\DateEditedComponent {#12414
  +createdAt: DateTimeImmutable @1702158537 {#4140
    date: 2023-12-09 22:48:57.0 +01:00
  }
  +editedAt: null
}
user_avatar App\Twig\Components\UserAvatarComponent 12.0 MiB 0.16 ms
Input props 
[
  "user" => App\Entity\User {#4157
    +avatar: null
    +cover: null
    +email: "Eheran@lemmy.world"
    +username: "@Eheran@lemmy.world"
    +roles: []
    +followersCount: 0
    +homepage: "front"
    +about: null
    +lastActive: DateTime @1726741249 {#4141
      date: 2024-09-19 12:20:49.0 +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 {#4158 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#4160 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#4162 …}
    +entries: Doctrine\ORM\PersistentCollection {#4164 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#4166 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#4168 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#4170 …}
    +posts: Doctrine\ORM\PersistentCollection {#4172 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#4174 …}
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    +postCommentVotes: Doctrine\ORM\PersistentCollection {#4178 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#4180 …}
    +subscribedDomains: Doctrine\ORM\PersistentCollection {#4182 …}
    +follows: Doctrine\ORM\PersistentCollection {#4184 …}
    +followers: Doctrine\ORM\PersistentCollection {#4186 …}
    +blocks: Doctrine\ORM\PersistentCollection {#4188 …}
    +blockers: Doctrine\ORM\PersistentCollection {#4190 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#4192 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#4194 …}
    +reports: Doctrine\ORM\PersistentCollection {#4196 …}
    +favourites: Doctrine\ORM\PersistentCollection {#4198 …}
    +violations: Doctrine\ORM\PersistentCollection {#4200 …}
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    +awards: Doctrine\ORM\PersistentCollection {#4204 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#4206 …}
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    -password: "$2y$13$8ubyFNe40NAtu6WljxMBfelK9IPb.SwGjMyECN1ANPRiYEFsAmkAS"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#4210 …}
    +apId: "Eheran@lemmy.world"
    +apProfileId: "https://lemmy.world/u/Eheran"
    +apPublicUrl: "https://lemmy.world/u/Eheran"
    +apFollowersUrl: null
    +apInboxUrl: "https://lemmy.world/inbox"
    +apDomain: "lemmy.world"
    +apPreferredUsername: "Eheran"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: false
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1729126688 {#4142
      date: 2024-10-17 02:58:08.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1690486356 {#4143
      date: 2023-07-27 21:32:36.0 +02:00
    }
  }
  "width" => 40
  "height" => 40
  "asLink" => true
]
Attributes 
[]
Component 
App\Twig\Components\UserAvatarComponent {#12468
  +width: 40
  +height: 40
  +user: App\Entity\User {#4157
    +avatar: null
    +cover: null
    +email: "Eheran@lemmy.world"
    +username: "@Eheran@lemmy.world"
    +roles: []
    +followersCount: 0
    +homepage: "front"
    +about: null
    +lastActive: DateTime @1726741249 {#4141
      date: 2024-09-19 12:20:49.0 +02:00
    }
    +markedForDeletionAt: null
    +fields: null
    +oauthGithubId: null
    +oauthGoogleId: null
    +oauthFacebookId: null
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    +hideAdult: true
    +showSubscribedUsers: true
    +showSubscribedMagazines: true
    +showSubscribedDomains: true
    +preferredLanguages: []
    +featuredMagazines: null
    +showProfileSubscriptions: true
    +showProfileFollowings: true
    +markNewComments: false
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    +notifyOnNewPostReply: false
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    +addMentionsEntries: false
    +addMentionsPosts: true
    +isBanned: false
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    +isDeleted: false
    +isBot: false
    +spamProtection: true
    +customCss: null
    +ignoreMagazinesCustomCss: false
    +moderatorTokens: Doctrine\ORM\PersistentCollection {#4158 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#4160 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#4162 …}
    +entries: Doctrine\ORM\PersistentCollection {#4164 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#4166 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#4168 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#4170 …}
    +posts: Doctrine\ORM\PersistentCollection {#4172 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#4174 …}
    +postComments: Doctrine\ORM\PersistentCollection {#4176 …}
    +postCommentVotes: Doctrine\ORM\PersistentCollection {#4178 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#4180 …}
    +subscribedDomains: Doctrine\ORM\PersistentCollection {#4182 …}
    +follows: Doctrine\ORM\PersistentCollection {#4184 …}
    +followers: Doctrine\ORM\PersistentCollection {#4186 …}
    +blocks: Doctrine\ORM\PersistentCollection {#4188 …}
    +blockers: Doctrine\ORM\PersistentCollection {#4190 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#4192 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#4194 …}
    +reports: Doctrine\ORM\PersistentCollection {#4196 …}
    +favourites: Doctrine\ORM\PersistentCollection {#4198 …}
    +violations: Doctrine\ORM\PersistentCollection {#4200 …}
    +notifications: Doctrine\ORM\PersistentCollection {#4202 …}
    +awards: Doctrine\ORM\PersistentCollection {#4204 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#4206 …}
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    -id: 35879
    -password: "$2y$13$8ubyFNe40NAtu6WljxMBfelK9IPb.SwGjMyECN1ANPRiYEFsAmkAS"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#4210 …}
    +apId: "Eheran@lemmy.world"
    +apProfileId: "https://lemmy.world/u/Eheran"
    +apPublicUrl: "https://lemmy.world/u/Eheran"
    +apFollowersUrl: null
    +apInboxUrl: "https://lemmy.world/inbox"
    +apDomain: "lemmy.world"
    +apPreferredUsername: "Eheran"
    +apDiscoverable: true
    +apManuallyApprovesFollowers: false
    +privateKey: null
    +publicKey: null
    +apFetchedAt: DateTime @1729126688 {#4142
      date: 2024-10-17 02:58:08.0 +02:00
    }
    +apDeletedAt: null
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    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1690486356 {#4143
      date: 2023-07-27 21:32:36.0 +02:00
    }
  }
  +asLink: true
}
vote App\Twig\Components\VoteComponent 12.0 MiB 0.41 ms
Input props 
[
  "subject" => App\Entity\EntryComment {#4144
    +user: App\Entity\User {#4157
      +avatar: null
      +cover: null
      +email: "Eheran@lemmy.world"
      +username: "@Eheran@lemmy.world"
      +roles: []
      +followersCount: 0
      +homepage: "front"
      +about: null
      +lastActive: DateTime @1726741249 {#4141
        date: 2024-09-19 12:20:49.0 +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 {#4158 …}
      +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#4160 …}
      +moderatorRequests: Doctrine\ORM\PersistentCollection {#4162 …}
      +entries: Doctrine\ORM\PersistentCollection {#4164 …}
      +entryVotes: Doctrine\ORM\PersistentCollection {#4166 …}
      +entryComments: Doctrine\ORM\PersistentCollection {#4168 …}
      +entryCommentVotes: Doctrine\ORM\PersistentCollection {#4170 …}
      +posts: Doctrine\ORM\PersistentCollection {#4172 …}
      +postVotes: Doctrine\ORM\PersistentCollection {#4174 …}
      +postComments: Doctrine\ORM\PersistentCollection {#4176 …}
      +postCommentVotes: Doctrine\ORM\PersistentCollection {#4178 …}
      +subscriptions: Doctrine\ORM\PersistentCollection {#4180 …}
      +subscribedDomains: Doctrine\ORM\PersistentCollection {#4182 …}
      +follows: Doctrine\ORM\PersistentCollection {#4184 …}
      +followers: Doctrine\ORM\PersistentCollection {#4186 …}
      +blocks: Doctrine\ORM\PersistentCollection {#4188 …}
      +blockers: Doctrine\ORM\PersistentCollection {#4190 …}
      +blockedMagazines: Doctrine\ORM\PersistentCollection {#4192 …}
      +blockedDomains: Doctrine\ORM\PersistentCollection {#4194 …}
      +reports: Doctrine\ORM\PersistentCollection {#4196 …}
      +favourites: Doctrine\ORM\PersistentCollection {#4198 …}
      +violations: Doctrine\ORM\PersistentCollection {#4200 …}
      +notifications: Doctrine\ORM\PersistentCollection {#4202 …}
      +awards: Doctrine\ORM\PersistentCollection {#4204 …}
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      -totpSecret: null
      -totpBackupCodes: []
      -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#4210 …}
      +apId: "Eheran@lemmy.world"
      +apProfileId: "https://lemmy.world/u/Eheran"
      +apPublicUrl: "https://lemmy.world/u/Eheran"
      +apFollowersUrl: null
      +apInboxUrl: "https://lemmy.world/inbox"
      +apDomain: "lemmy.world"
      +apPreferredUsername: "Eheran"
      +apDiscoverable: true
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      +privateKey: null
      +publicKey: null
      +apFetchedAt: DateTime @1729126688 {#4142
        date: 2024-10-17 02:58:08.0 +02:00
      }
      +apDeletedAt: null
      +apTimeoutAt: null
      +visibility: "visible             "
      +createdAt: DateTimeImmutable @1690486356 {#4143
        date: 2023-07-27 21:32:36.0 +02:00
      }
    }
    +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 {#1537
          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
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        +addMentionsPosts: true
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        +isDeleted: false
        +isBot: false
        +spamProtection: true
        +customCss: null
        +ignoreMagazinesCustomCss: false
        +moderatorTokens: Doctrine\ORM\PersistentCollection {#1516 …}
        +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#1519 …}
        +moderatorRequests: Doctrine\ORM\PersistentCollection {#1517 …}
        +entries: Doctrine\ORM\PersistentCollection {#1623 …}
        +entryVotes: Doctrine\ORM\PersistentCollection {#1406 …}
        +entryComments: Doctrine\ORM\PersistentCollection {#1713 …}
        +entryCommentVotes: Doctrine\ORM\PersistentCollection {#1748 …}
        +posts: Doctrine\ORM\PersistentCollection {#1657 …}
        +postVotes: Doctrine\ORM\PersistentCollection {#1488 …}
        +postComments: Doctrine\ORM\PersistentCollection {#1756 …}
        +postCommentVotes: Doctrine\ORM\PersistentCollection {#1465 …}
        +subscriptions: Doctrine\ORM\PersistentCollection {#1495 …}
        +subscribedDomains: Doctrine\ORM\PersistentCollection {#1624 …}
        +follows: Doctrine\ORM\PersistentCollection {#1635 …}
        +followers: Doctrine\ORM\PersistentCollection {#1633 …}
        +blocks: Doctrine\ORM\PersistentCollection {#1418 …}
        +blockers: Doctrine\ORM\PersistentCollection {#1411 …}
        +blockedMagazines: Doctrine\ORM\PersistentCollection {#1455 …}
        +blockedDomains: Doctrine\ORM\PersistentCollection {#1459 …}
        +reports: Doctrine\ORM\PersistentCollection {#1419 …}
        +favourites: Doctrine\ORM\PersistentCollection {#1428 …}
        +violations: Doctrine\ORM\PersistentCollection {#1429 …}
        +notifications: Doctrine\ORM\PersistentCollection {#1694 …}
        +awards: Doctrine\ORM\PersistentCollection {#1435 …}
        +subscribedCategories: Doctrine\ORM\PersistentCollection {#1709 …}
        +categories: Doctrine\ORM\PersistentCollection {#1647 …}
        -id: 269
        -password: "$2y$13$UYqaD7bZp4O.OwB02SlMIeKWP1aeHwuKf.UMqd1I/0STqvflxyU5K"
        -totpSecret: null
        -totpBackupCodes: []
        -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#1677 …}
        +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
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        +privateKey: null
        +publicKey: null
        +apFetchedAt: DateTime @1709584336 {#1536
          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
      }
      +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
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
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      Get a board with a TP5000. [Like this one here](https://www.aliexpress.com/item/1005004950011414.html).\n
      \n
      Don’t charge LFP to 4.2 volt! The crude “check voltage and if below 3.6 V keep charging” is okay too as long as the maximum current is within battery spec. But measure while charging, don’t turn that off to measure the open circuit voltage.
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      +slug: "Sanity-check-for-LiFePO4-Charger-Design"
      +title: "Sanity check for LiFePO4 Charger Design"
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      +body: """
        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\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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      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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Input props 
[
  "subject" => App\Entity\EntryComment {#4144
    +user: App\Entity\User {#4157
      +avatar: null
      +cover: null
      +email: "Eheran@lemmy.world"
      +username: "@Eheran@lemmy.world"
      +roles: []
      +followersCount: 0
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      +lastActive: DateTime @1726741249 {#4141
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      +markedForDeletionAt: null
      +fields: null
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      +oauthKeycloakId: null
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      +showSubscribedUsers: true
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      +notifyOnNewEntry: false
      +notifyOnNewEntryReply: false
      +notifyOnNewEntryCommentReply: false
      +notifyOnNewPost: false
      +notifyOnNewPostReply: false
      +notifyOnNewPostCommentReply: false
      +addMentionsEntries: false
      +addMentionsPosts: true
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      +isDeleted: false
      +isBot: false
      +spamProtection: true
      +customCss: null
      +ignoreMagazinesCustomCss: false
      +moderatorTokens: Doctrine\ORM\PersistentCollection {#4158 …}
      +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#4160 …}
      +moderatorRequests: Doctrine\ORM\PersistentCollection {#4162 …}
      +entries: Doctrine\ORM\PersistentCollection {#4164 …}
      +entryVotes: Doctrine\ORM\PersistentCollection {#4166 …}
      +entryComments: Doctrine\ORM\PersistentCollection {#4168 …}
      +entryCommentVotes: Doctrine\ORM\PersistentCollection {#4170 …}
      +posts: Doctrine\ORM\PersistentCollection {#4172 …}
      +postVotes: Doctrine\ORM\PersistentCollection {#4174 …}
      +postComments: Doctrine\ORM\PersistentCollection {#4176 …}
      +postCommentVotes: Doctrine\ORM\PersistentCollection {#4178 …}
      +subscriptions: Doctrine\ORM\PersistentCollection {#4180 …}
      +subscribedDomains: Doctrine\ORM\PersistentCollection {#4182 …}
      +follows: Doctrine\ORM\PersistentCollection {#4184 …}
      +followers: Doctrine\ORM\PersistentCollection {#4186 …}
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      +blockers: Doctrine\ORM\PersistentCollection {#4190 …}
      +blockedMagazines: Doctrine\ORM\PersistentCollection {#4192 …}
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      +reports: Doctrine\ORM\PersistentCollection {#4196 …}
      +favourites: Doctrine\ORM\PersistentCollection {#4198 …}
      +violations: Doctrine\ORM\PersistentCollection {#4200 …}
      +notifications: Doctrine\ORM\PersistentCollection {#4202 …}
      +awards: Doctrine\ORM\PersistentCollection {#4204 …}
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      -totpBackupCodes: []
      -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#4210 …}
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      +visibility: "visible             "
      +createdAt: DateTimeImmutable @1690486356 {#4143
        date: 2023-07-27 21:32:36.0 +02:00
      }
    }
    +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
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        }
        +markedForDeletionAt: null
        +fields: null
        +oauthGithubId: null
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        +hideAdult: true
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        +showSubscribedMagazines: true
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        +isDeleted: false
        +isBot: false
        +spamProtection: true
        +customCss: null
        +ignoreMagazinesCustomCss: false
        +moderatorTokens: Doctrine\ORM\PersistentCollection {#1516 …}
        +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#1519 …}
        +moderatorRequests: Doctrine\ORM\PersistentCollection {#1517 …}
        +entries: Doctrine\ORM\PersistentCollection {#1623 …}
        +entryVotes: Doctrine\ORM\PersistentCollection {#1406 …}
        +entryComments: Doctrine\ORM\PersistentCollection {#1713 …}
        +entryCommentVotes: Doctrine\ORM\PersistentCollection {#1748 …}
        +posts: Doctrine\ORM\PersistentCollection {#1657 …}
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        +awards: Doctrine\ORM\PersistentCollection {#1435 …}
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        -totpSecret: null
        -totpBackupCodes: []
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        +apDeletedAt: null
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        +createdAt: DateTimeImmutable @1686890246 {#1515
          date: 2023-06-16 06:37:26.0 +02:00
        }
        +__isInitialized__: true
         …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
          ---
          """
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        +entryCommentCount: 1230
        +postCount: 1
        +postCommentCount: 4
        +isAdult: false
        +customCss: null
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        }
        +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 …}
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        +logs: Doctrine\ORM\PersistentCollection {#72 …}
        +awards: Doctrine\ORM\PersistentCollection {#61 …}
        +categories: Doctrine\ORM\PersistentCollection {#1820 …}
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        +apDeletedAt: null
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      }
      +image: null
      +domain: Proxies\__CG__\App\Entity\Domain {#1912 …}
      +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.
        """
      +type: "article"
      +lang: "en"
      +isOc: false
      +hasEmbed: false
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      +favouriteCount: 11
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      +sticky: false
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      }
      +ip: null
      +adaAmount: 0
      +tags: null
      +mentions: null
      +comments: Doctrine\ORM\PersistentCollection {#1866 …}
      +votes: Doctrine\ORM\PersistentCollection {#1978 …}
      +reports: Doctrine\ORM\PersistentCollection {#1946 …}
      +favourites: Doctrine\ORM\PersistentCollection {#1971 …}
      +notifications: Doctrine\ORM\PersistentCollection {#2443 …}
      +badges: Doctrine\ORM\PersistentCollection {#2426 …}
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      +cross: false
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      }
    }
    +magazine: App\Entity\Magazine {#266}
    +image: null
    +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"
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    }
    +ip: null
    +tags: null
    +mentions: [
      "@Saigonauticon@voltage.vn"
    ]
    +children: Doctrine\ORM\PersistentCollection {#4145 …}
    +nested: Doctrine\ORM\PersistentCollection {#4147 …}
    +votes: Doctrine\ORM\PersistentCollection {#4149 …}
    +reports: Doctrine\ORM\PersistentCollection {#4151 …}
    +favourites: Doctrine\ORM\PersistentCollection {#4153 …}
    +notifications: Doctrine\ORM\PersistentCollection {#4155 …}
    -id: 215007
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  }
]
Attributes 
[]
Component 
App\Twig\Components\BoostComponent {#12604
  +formDest: "entry_comment"
  +subject: App\Entity\EntryComment {#4144
    +user: App\Entity\User {#4157
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      +cover: null
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      +username: "@Eheran@lemmy.world"
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      +showSubscribedMagazines: true
      +showSubscribedDomains: true
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      +notifyOnNewEntryReply: false
      +notifyOnNewEntryCommentReply: false
      +notifyOnNewPost: false
      +notifyOnNewPostReply: false
      +notifyOnNewPostCommentReply: false
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      +addMentionsPosts: true
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      +isBot: false
      +spamProtection: true
      +customCss: null
      +ignoreMagazinesCustomCss: false
      +moderatorTokens: Doctrine\ORM\PersistentCollection {#4158 …}
      +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#4160 …}
      +moderatorRequests: Doctrine\ORM\PersistentCollection {#4162 …}
      +entries: Doctrine\ORM\PersistentCollection {#4164 …}
      +entryVotes: Doctrine\ORM\PersistentCollection {#4166 …}
      +entryComments: Doctrine\ORM\PersistentCollection {#4168 …}
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      +posts: Doctrine\ORM\PersistentCollection {#4172 …}
      +postVotes: Doctrine\ORM\PersistentCollection {#4174 …}
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      +reports: Doctrine\ORM\PersistentCollection {#4196 …}
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      +notifications: Doctrine\ORM\PersistentCollection {#4202 …}
      +awards: Doctrine\ORM\PersistentCollection {#4204 …}
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      -totpBackupCodes: []
      -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#4210 …}
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      +apDeletedAt: null
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      +visibility: "visible             "
      +createdAt: DateTimeImmutable @1690486356 {#4143
        date: 2023-07-27 21:32:36.0 +02:00
      }
    }
    +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: []
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        +homepage: "front"
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        +isDeleted: false
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        +spamProtection: true
        +customCss: null
        +ignoreMagazinesCustomCss: false
        +moderatorTokens: Doctrine\ORM\PersistentCollection {#1516 …}
        +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#1519 …}
        +moderatorRequests: Doctrine\ORM\PersistentCollection {#1517 …}
        +entries: Doctrine\ORM\PersistentCollection {#1623 …}
        +entryVotes: Doctrine\ORM\PersistentCollection {#1406 …}
        +entryComments: Doctrine\ORM\PersistentCollection {#1713 …}
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        +posts: Doctrine\ORM\PersistentCollection {#1657 …}
        +postVotes: Doctrine\ORM\PersistentCollection {#1488 …}
        +postComments: Doctrine\ORM\PersistentCollection {#1756 …}
        +postCommentVotes: Doctrine\ORM\PersistentCollection {#1465 …}
        +subscriptions: Doctrine\ORM\PersistentCollection {#1495 …}
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        +blockers: Doctrine\ORM\PersistentCollection {#1411 …}
        +blockedMagazines: Doctrine\ORM\PersistentCollection {#1455 …}
        +blockedDomains: Doctrine\ORM\PersistentCollection {#1459 …}
        +reports: Doctrine\ORM\PersistentCollection {#1419 …}
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        -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#1677 …}
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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
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          **For questions about component-level electronic circuits, tools and equipment.**\n
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          \n
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          \n
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      +image: null
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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: """
      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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      +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’.
        """
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entry_comment App\Twig\Components\EntryCommentComponent 14.0 MiB 57.98 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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        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"
      +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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      +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.
        """
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      -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"
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    +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’.
      """
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user_inline App\Twig\Components\UserInlineComponent 12.0 MiB 0.14 ms
Input props 
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date App\Twig\Components\DateComponent 12.0 MiB 0.13 ms
Input props 
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Attributes 
[]
Component 
App\Twig\Components\DateComponent {#13004
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date_edited App\Twig\Components\DateEditedComponent 14.0 MiB 0.10 ms
Input props 
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Component 
App\Twig\Components\DateEditedComponent {#13058
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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
          \n
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          \n
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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: """
        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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    +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’.
      """
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    +children: Doctrine\ORM\PersistentCollection {#4274 …}
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          **For questions about component-level electronic circuits, tools and equipment.**\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$!\n
        \n
        However, there are no LiFePO4 chargers available. The vendors assure me I can “totally use” a 4.2V Li-ion charger, but I don’t believe them (although the cells test as being in good shape).\n
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        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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        Get a board with a TP5000. [Like this one here](https://www.aliexpress.com/item/1005004950011414.html).\n
        \n
        Don’t charge LFP to 4.2 volt! The crude “check voltage and if below 3.6 V keep charging” is okay too as long as the maximum current is within battery spec. But measure while charging, don’t turn that off to measure the open circuit voltage.
        """
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    +body: """
      An international parts order is too complex for such a small thing. I’m not in the USA or China. So no TP5000 for me, got to work with what I have.\n
      \n
      I agree, no charging at 4.2 volts. The current charger I built seems to work well enough. I ran some tests and it charges within spec. The reason I turn off the charger to measure cell voltage is because otherwise I’ll mainly be measuring SMPS noise.\n
      \n
      Anyway it beats the charger available in the local market, which is clearly unsafe, no matter how much they assure me that it’s ‘totally OK’.
      """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\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$!\n
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        Get a board with a TP5000. [Like this one here](https://www.aliexpress.com/item/1005004950011414.html).\n
        \n
        Don’t charge LFP to 4.2 volt! The crude “check voltage and if below 3.6 V keep charging” is okay too as long as the maximum current is within battery spec. But measure while charging, don’t turn that off to measure the open circuit voltage.
        """
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      An international parts order is too complex for such a small thing. I’m not in the USA or China. So no TP5000 for me, got to work with what I have.\n
      \n
      I agree, no charging at 4.2 volts. The current charger I built seems to work well enough. I ran some tests and it charges within spec. The reason I turn off the charger to measure cell voltage is because otherwise I’ll mainly be measuring SMPS noise.\n
      \n
      Anyway it beats the charger available in the local market, which is clearly unsafe, no matter how much they assure me that it’s ‘totally OK’.
      """
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\n
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        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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        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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          **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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      +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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          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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    +body: "Perfect."
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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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      +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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          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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date App\Twig\Components\DateComponent 14.0 MiB 0.16 ms
Input props 
[
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    date: 2023-12-12 20:48:54.0 +01:00
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]
Attributes 
[]
Component 
App\Twig\Components\DateComponent {#13641
  +date: DateTimeImmutable @1702410534 {#4356
    date: 2023-12-12 20:48:54.0 +01:00
  }
}
date_edited App\Twig\Components\DateEditedComponent 14.0 MiB 0.12 ms
Input props 
[
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    date: 2023-12-12 20:48:54.0 +01:00
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  "editedAt" => null
]
Attributes 
[]
Component 
App\Twig\Components\DateEditedComponent {#13695
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    date: 2023-12-12 20:48:54.0 +01:00
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  +editedAt: null
}
user_avatar App\Twig\Components\UserAvatarComponent 14.0 MiB 0.23 ms
Input props 
[
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  "width" => 40
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]
Attributes 
[]
Component 
App\Twig\Components\UserAvatarComponent {#13749
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vote App\Twig\Components\VoteComponent 14.0 MiB 1.93 ms
Input props 
[
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          date: 2023-06-16 06:37:26.0 +02:00
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        +__isInitialized__: true
         …2
      }
      +magazine: App\Entity\Magazine {#266
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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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      +image: null
      +domain: Proxies\__CG__\App\Entity\Domain {#1912 …}
      +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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          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$!\n
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        \n
        Did I overengineer this? Could I have just used a linear voltage regulator that outputs 3.6V (or a Zener), and a current-limited 5v power supply?\n
        \n
        Charge speed is not really important in my application. Anything under 4 hours is great. Frankly, I’m just trying to phase out the less safe kinds of lithium cell in my lab.
        """
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          Get a board with a TP5000. [Like this one here](https://www.aliexpress.com/item/1005004950011414.html).\n
          \n
          Don’t charge LFP to 4.2 volt! The crude “check voltage and if below 3.6 V keep charging” is okay too as long as the maximum current is within battery spec. But measure while charging, don’t turn that off to measure the open circuit voltage.
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        An international parts order is too complex for such a small thing. I’m not in the USA or China. So no TP5000 for me, got to work with what I have.\n
        \n
        I agree, no charging at 4.2 volts. The current charger I built seems to work well enough. I ran some tests and it charges within spec. The reason I turn off the charger to measure cell voltage is because otherwise I’ll mainly be measuring SMPS noise.\n
        \n
        Anyway it beats the charger available in the local market, which is clearly unsafe, no matter how much they assure me that it’s ‘totally OK’.
        """
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boost App\Twig\Components\BoostComponent 14.0 MiB 1.06 ms
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         …2
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        So, there are these great 32700 LiFePO4 batteries that showed up in my local industrial market. For like USD 2$!\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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        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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    +body: "Perfect."
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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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          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
        \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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        -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#1677 …}
        +apId: "Saigonauticon@voltage.vn"
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          date: 2024-03-04 21:32:16.0 +01:00
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        +createdAt: DateTimeImmutable @1686890246 {#1515
          date: 2023-06-16 06:37:26.0 +02:00
        }
        +__isInitialized__: true
         …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
          ---
          """
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          date: 2024-10-20 10:40:08.0 +02:00
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          date: 2024-09-25 09:01:54.0 +02:00
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          date: 2023-06-19 05:13:29.0 +02:00
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      }
      +image: null
      +domain: Proxies\__CG__\App\Entity\Domain {#1912 …}
      +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.
        """
      +type: "article"
      +lang: "en"
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        date: 2023-12-12 20:48:54.0 +01:00
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      -id: 18532
      -titleTs: "'charger':5 'check':2 'design':6 'lifepo4':4 'saniti':1"
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      +editedAt: null
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        date: 2023-11-30 11:15:04.0 +01:00
      }
    }
    +magazine: App\Entity\Magazine {#266}
    +image: null
    +parent: App\Entity\EntryComment {#4273
      +user: Proxies\__CG__\App\Entity\User {#1943 …2}
      +entry: App\Entity\Entry {#2388}
      +magazine: App\Entity\Magazine {#266}
      +image: null
      +parent: App\Entity\EntryComment {#4144
        +user: App\Entity\User {#4157}
        +entry: App\Entity\Entry {#2388}
        +magazine: App\Entity\Magazine {#266}
        +image: null
        +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
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          date: 2024-01-01 11:46:20.0 +01:00
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          "@Saigonauticon@voltage.vn"
        ]
        +children: Doctrine\ORM\PersistentCollection {#4145 …}
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        +reports: Doctrine\ORM\PersistentCollection {#4151 …}
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        +notifications: Doctrine\ORM\PersistentCollection {#4155 …}
        -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
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        +editedAt: null
        +createdAt: DateTimeImmutable @1702158537 {#4140
          date: 2023-12-09 22:48:57.0 +01:00
        }
      }
      +root: App\Entity\EntryComment {#4144}
      +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
      +lastActive: DateTime @1702369096 {#4271
        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 {#4274 …}
      +nested: Doctrine\ORM\PersistentCollection {#4276 …}
      +votes: Doctrine\ORM\PersistentCollection {#4278 …}
      +reports: Doctrine\ORM\PersistentCollection {#4280 …}
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      -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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      +editedAt: null
      +createdAt: DateTimeImmutable @1702369096 {#4272
        date: 2023-12-12 09:18:16.0 +01:00
      }
    }
    +root: App\Entity\EntryComment {#4144}
    +body: "Perfect."
    +lang: "en"
    +isAdult: false
    +favouriteCount: 0
    +score: 0
    +lastActive: DateTime @1702410534 {#4355
      date: 2023-12-12 20:48:54.0 +01:00
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    +ip: null
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      "@Saigonauticon@voltage.vn"
      "@Eheran@lemmy.world"
    ]
    +children: Doctrine\ORM\PersistentCollection {#4358 …}
    +nested: Doctrine\ORM\PersistentCollection {#4360 …}
    +votes: Doctrine\ORM\PersistentCollection {#4362 …}
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      date: 2023-12-12 20:48:54.0 +01:00
    }
  }
  +nestedComments: []
  +level: 3
  +view: "tree"
  -entryCommentRepository: App\Repository\EntryCommentRepository {#557 …}
  -twig: Twig\Environment {#1252 …}
  -security: Symfony\Bundle\SecurityBundle\Security {#1101 …}
  -cache: Symfony\Component\Cache\Adapter\TraceableTagAwareAdapter {#600 …}
  -requestStack: Symfony\Component\HttpFoundation\RequestStack {#1328 …}
}
settings_row_enum App\Twig\Components\SettingsRowEnumComponent 14.0 MiB 0.25 ms
Input props 
[
  "label" => "Sidebar position"
  "settingsKey" => "KBIN_GENERAL_SIDEBAR_POSITION"
  "values" => [
    [
      "name" => "Left"
      "value" => "LEFT"
    ]
    [
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      "value" => "RIGHT"
    ]
  ]
  "defaultValue" => "RIGHT"
]
Attributes 
[]
Component 
App\Twig\Components\SettingsRowEnumComponent {#14257
  +label: "Sidebar position"
  +help: ""
  +settingsKey: "KBIN_GENERAL_SIDEBAR_POSITION"
  +values: [
    [
      "name" => "Left"
      "value" => "LEFT"
    ]
    [
      "name" => "Right"
      "value" => "RIGHT"
    ]
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}
settings_row_switch App\Twig\Components\SettingsRowSwitchComponent 14.0 MiB 0.19 ms
Input props 
[
  "label" => "Dynamic lists"
  "settingsKey" => "KBIN_GENERAL_DYNAMIC_LISTS"
]
Attributes 
[]
Component 
App\Twig\Components\SettingsRowSwitchComponent {#14321
  +label: "Dynamic lists"
  +help: ""
  +settingsKey: "KBIN_GENERAL_DYNAMIC_LISTS"
  +defaultValue: false
  +reloadRequired: true
}
settings_row_switch App\Twig\Components\SettingsRowSwitchComponent 14.0 MiB 0.14 ms
Input props 
[
  "label" => "Rounded edges"
  "settingsKey" => "KBIN_GENERAL_ROUNDED_EDGES"
]
Attributes 
[]
Component 
App\Twig\Components\SettingsRowSwitchComponent {#14386
  +label: "Rounded edges"
  +help: ""
  +settingsKey: "KBIN_GENERAL_ROUNDED_EDGES"
  +defaultValue: false
  +reloadRequired: true
}
settings_row_switch App\Twig\Components\SettingsRowSwitchComponent 14.0 MiB 0.18 ms
Input props 
[
  "label" => "Infinite scrolling"
  "help" => "Automatically load more content when you reach the bottom of the page."
  "settingsKey" => "KBIN_GENERAL_INFINITE_SCROLL"
]
Attributes 
[]
Component 
App\Twig\Components\SettingsRowSwitchComponent {#8598
  +label: "Infinite scrolling"
  +help: "Automatically load more content when you reach the bottom of the page."
  +settingsKey: "KBIN_GENERAL_INFINITE_SCROLL"
  +defaultValue: false
  +reloadRequired: true
}
settings_row_switch App\Twig\Components\SettingsRowSwitchComponent 14.0 MiB 0.13 ms
Input props 
[
  "label" => "Sticky navbar"
  "help" => "The navbar will stick to the top of the page when you scroll down."
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]
Attributes 
[]
Component 
App\Twig\Components\SettingsRowSwitchComponent {#11222
  +label: "Sticky navbar"
  +help: "The navbar will stick to the top of the page when you scroll down."
  +settingsKey: "KBIN_GENERAL_FIXED_NAVBAR"
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}
settings_row_switch App\Twig\Components\SettingsRowSwitchComponent 14.0 MiB 0.12 ms
Input props 
[
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]
Attributes 
[]
Component 
App\Twig\Components\SettingsRowSwitchComponent {#8072
  +label: "Show top bar"
  +help: ""
  +settingsKey: "KBIN_GENERAL_TOPBAR"
  +defaultValue: false
  +reloadRequired: true
}
settings_row_switch App\Twig\Components\SettingsRowSwitchComponent 14.0 MiB 0.12 ms
Input props 
[
  "label" => "Turbo mode (experimental)"
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]
Attributes 
[]
Component 
App\Twig\Components\SettingsRowSwitchComponent {#11025
  +label: "Turbo mode (experimental)"
  +help: ""
  +settingsKey: "KBIN_GENERAL_TURBO"
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  +reloadRequired: true
}
user_settings_row_switch App\Twig\Components\UserSettingsRowSwitchComponent 14.0 MiB 1.49 ms
Input props 
[
  "label" => "Mark new comments"
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]
Attributes 
[]
Component 
App\Twig\Components\UserSettingsRowSwitchComponent {#13852
  +label: "Mark new comments"
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}
settings_row_switch App\Twig\Components\SettingsRowSwitchComponent 14.0 MiB 0.13 ms
Input props 
[
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  "settingsKey" => "KBIN_GENERAL_SUPPORT_US_BLOCK"
  "defaultValue" => true
]
Attributes 
[]
Component 
App\Twig\Components\SettingsRowSwitchComponent {#14471
  +label: "Show "Support Us" block"
  +help: ""
  +settingsKey: "KBIN_GENERAL_SUPPORT_US_BLOCK"
  +defaultValue: true
  +reloadRequired: true
}
user_settings_row_switch App\Twig\Components\UserSettingsRowSwitchComponent 14.0 MiB 0.15 ms
Input props 
[
  "label" => "Show subscribed users"
  "settingsKey" => "KBIN_SUB_CHANNEL_USERS"
]
Attributes 
[]
Component 
App\Twig\Components\UserSettingsRowSwitchComponent {#14529
  +label: "Show subscribed users"
  +help: ""
  +settingsKey: "KBIN_SUB_CHANNEL_USERS"
  +defaultValue: false
  +reloadRequired: true
}
user_settings_row_switch App\Twig\Components\UserSettingsRowSwitchComponent 14.0 MiB 0.14 ms
Input props 
[
  "label" => "Show subscribed magazines"
  "settingsKey" => "KBIN_SUB_CHANNEL_MAGAZINES"
]
Attributes 
[]
Component 
App\Twig\Components\UserSettingsRowSwitchComponent {#14585
  +label: "Show subscribed magazines"
  +help: ""
  +settingsKey: "KBIN_SUB_CHANNEL_MAGAZINES"
  +defaultValue: false
  +reloadRequired: true
}
user_settings_row_switch App\Twig\Components\UserSettingsRowSwitchComponent 14.0 MiB 0.16 ms
Input props 
[
  "label" => "Show subscribed domains"
  "settingsKey" => "KBIN_SUB_CHANNEL_DOMAINS"
]
Attributes 
[]
Component 
App\Twig\Components\UserSettingsRowSwitchComponent {#14641
  +label: "Show subscribed domains"
  +help: ""
  +settingsKey: "KBIN_SUB_CHANNEL_DOMAINS"
  +defaultValue: false
  +reloadRequired: true
}
settings_row_switch App\Twig\Components\SettingsRowSwitchComponent 14.0 MiB 0.12 ms
Input props 
[
  "label" => "Auto media preview"
  "help" => "Automatically expand media previews."
  "settingsKey" => "KBIN_ENTRIES_SHOW_PREVIEW"
]
Attributes 
[]
Component 
App\Twig\Components\SettingsRowSwitchComponent {#14697
  +label: "Auto media preview"
  +help: "Automatically expand media previews."
  +settingsKey: "KBIN_ENTRIES_SHOW_PREVIEW"
  +defaultValue: false
  +reloadRequired: true
}
settings_row_switch App\Twig\Components\SettingsRowSwitchComponent 14.0 MiB 0.15 ms
Input props 
[
  "label" => "Compact view"
  "settingsKey" => "KBIN_ENTRIES_COMPACT"
]
Attributes 
[]
Component 
App\Twig\Components\SettingsRowSwitchComponent {#14753
  +label: "Compact view"
  +help: ""
  +settingsKey: "KBIN_ENTRIES_COMPACT"
  +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_ENTRIES_SHOW_USERS_AVATARS"
]
Attributes 
[]
Component 
App\Twig\Components\SettingsRowSwitchComponent {#14809
  +label: "Show users’ avatars"
  +help: ""
  +settingsKey: "KBIN_ENTRIES_SHOW_USERS_AVATARS"
  +defaultValue: false
  +reloadRequired: true
}
settings_row_switch App\Twig\Components\SettingsRowSwitchComponent 14.0 MiB 0.15 ms
Input props 
[
  "label" => "Show magazines’ icons"
  "settingsKey" => "KBIN_ENTRIES_SHOW_MAGAZINES_ICONS"
]
Attributes 
[]
Component 
App\Twig\Components\SettingsRowSwitchComponent {#14865
  +label: "Show magazines’ icons"
  +help: ""
  +settingsKey: "KBIN_ENTRIES_SHOW_MAGAZINES_ICONS"
  +defaultValue: false
  +reloadRequired: true
}
settings_row_switch App\Twig\Components\SettingsRowSwitchComponent 14.0 MiB 0.15 ms
Input props 
[
  "label" => "Show thumbnails"
  "settingsKey" => "KBIN_ENTRIES_SHOW_THUMBNAILS"
  "defaultValue" => true
]
Attributes 
[]
Component 
App\Twig\Components\SettingsRowSwitchComponent {#14921
  +label: "Show thumbnails"
  +help: ""
  +settingsKey: "KBIN_ENTRIES_SHOW_THUMBNAILS"
  +defaultValue: true
  +reloadRequired: true
}
settings_row_switch App\Twig\Components\SettingsRowSwitchComponent 14.0 MiB 0.13 ms
Input props 
[
  "label" => "Auto media preview"
  "help" => "Automatically expand media previews."
  "settingsKey" => "KBIN_POSTS_SHOW_PREVIEW"
]
Attributes 
[]
Component 
App\Twig\Components\SettingsRowSwitchComponent {#14977
  +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 {#15033
  +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 0.25 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 {#15089
  +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 0.18 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 {#15147
  +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 0.51 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 {#1537
      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 {#1516 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#1519 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#1517 …}
    +entries: Doctrine\ORM\PersistentCollection {#1623 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#1406 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#1713 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#1748 …}
    +posts: Doctrine\ORM\PersistentCollection {#1657 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#1488 …}
    +postComments: Doctrine\ORM\PersistentCollection {#1756 …}
    +postCommentVotes: Doctrine\ORM\PersistentCollection {#1465 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#1495 …}
    +subscribedDomains: Doctrine\ORM\PersistentCollection {#1624 …}
    +follows: Doctrine\ORM\PersistentCollection {#1635 …}
    +followers: Doctrine\ORM\PersistentCollection {#1633 …}
    +blocks: Doctrine\ORM\PersistentCollection {#1418 …}
    +blockers: Doctrine\ORM\PersistentCollection {#1411 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#1455 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#1459 …}
    +reports: Doctrine\ORM\PersistentCollection {#1419 …}
    +favourites: Doctrine\ORM\PersistentCollection {#1428 …}
    +violations: Doctrine\ORM\PersistentCollection {#1429 …}
    +notifications: Doctrine\ORM\PersistentCollection {#1694 …}
    +awards: Doctrine\ORM\PersistentCollection {#1435 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#1709 …}
    +categories: Doctrine\ORM\PersistentCollection {#1647 …}
    -id: 269
    -password: "$2y$13$UYqaD7bZp4O.OwB02SlMIeKWP1aeHwuKf.UMqd1I/0STqvflxyU5K"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#1677 …}
    +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 {#1536
      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 {#15224
  +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 {#1537
      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 {#1516 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#1519 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#1517 …}
    +entries: Doctrine\ORM\PersistentCollection {#1623 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#1406 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#1713 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#1748 …}
    +posts: Doctrine\ORM\PersistentCollection {#1657 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#1488 …}
    +postComments: Doctrine\ORM\PersistentCollection {#1756 …}
    +postCommentVotes: Doctrine\ORM\PersistentCollection {#1465 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#1495 …}
    +subscribedDomains: Doctrine\ORM\PersistentCollection {#1624 …}
    +follows: Doctrine\ORM\PersistentCollection {#1635 …}
    +followers: Doctrine\ORM\PersistentCollection {#1633 …}
    +blocks: Doctrine\ORM\PersistentCollection {#1418 …}
    +blockers: Doctrine\ORM\PersistentCollection {#1411 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#1455 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#1459 …}
    +reports: Doctrine\ORM\PersistentCollection {#1419 …}
    +favourites: Doctrine\ORM\PersistentCollection {#1428 …}
    +violations: Doctrine\ORM\PersistentCollection {#1429 …}
    +notifications: Doctrine\ORM\PersistentCollection {#1694 …}
    +awards: Doctrine\ORM\PersistentCollection {#1435 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#1709 …}
    +categories: Doctrine\ORM\PersistentCollection {#1647 …}
    -id: 269
    -password: "$2y$13$UYqaD7bZp4O.OwB02SlMIeKWP1aeHwuKf.UMqd1I/0STqvflxyU5K"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#1677 …}
    +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 {#1536
      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 0.16 ms
Input props 
[
  "date" => DateTimeImmutable @1701339304 {#1850
    date: 2023-11-30 11:15:04.0 +01:00
  }
]
Attributes 
[]
Component 
App\Twig\Components\DateComponent {#15285
  +date: DateTimeImmutable @1701339304 {#1850
    date: 2023-11-30 11:15:04.0 +01:00
  }
}
magazine_box App\Twig\Components\MagazineBoxComponent 14.0 MiB 15.27 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 {#15341
  +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 0.45 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 {#15399
  +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 0.15 ms
Input props 
[
  "date" => DateTimeImmutable @1687144409 {#272
    date: 2023-06-19 05:13:29.0 +02:00
  }
]
Attributes 
[]
Component 
App\Twig\Components\DateComponent {#15511
  +date: DateTimeImmutable @1687144409 {#272
    date: 2023-06-19 05:13:29.0 +02:00
  }
}
user_inline App\Twig\Components\UserInlineComponent 14.0 MiB 0.66 ms
Input props 
[
  "user" => Proxies\__CG__\App\Entity\User {#15570
    +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 {#15617
      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
    +notifyOnNewEntryReply: false
    +notifyOnNewEntryCommentReply: false
    +notifyOnNewPost: false
    +notifyOnNewPostReply: false
    +notifyOnNewPostCommentReply: false
    +addMentionsEntries: false
    +addMentionsPosts: true
    +isBanned: false
    +isVerified: true
    +isDeleted: false
    +isBot: false
    +spamProtection: true
    +customCss: null
    +ignoreMagazinesCustomCss: false
    +moderatorTokens: Doctrine\ORM\PersistentCollection {#15619 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#15621 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#15623 …}
    +entries: Doctrine\ORM\PersistentCollection {#15625 …}
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     …2
  }
]
Attributes 
[]
Component 
App\Twig\Components\UserInlineComponent {#15588
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      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 {#15618
      date: 2023-06-12 11:00:40.0 +02:00
    }
    +__isInitialized__: true
     …2
  }
  +showAvatar: true
}
related_magazines App\Twig\Components\RelatedMagazinesComponent 16.0 MiB 7.29 ms
Input props 
[
  "magazine" => "askelectronics@discuss.tchncs.de"
  "tag" => null
]
Attributes 
[]
Component 
App\Twig\Components\RelatedMagazinesComponent {#15779
  +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 30.42 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 {#15905
  +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 0.77 ms
Input props 
[
  "user" => App\Entity\User {#16096
    +avatar: Proxies\__CG__\App\Entity\Image {#16095 …}
    +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 {#16099
      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 {#16094 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#16092 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#16090 …}
    +entries: Doctrine\ORM\PersistentCollection {#16088 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#16086 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#16084 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#16082 …}
    +posts: Doctrine\ORM\PersistentCollection {#16080 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#16078 …}
    +postComments: Doctrine\ORM\PersistentCollection {#16076 …}
    +postCommentVotes: Doctrine\ORM\PersistentCollection {#16074 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#16072 …}
    +subscribedDomains: Doctrine\ORM\PersistentCollection {#16070 …}
    +follows: Doctrine\ORM\PersistentCollection {#16068 …}
    +followers: Doctrine\ORM\PersistentCollection {#16066 …}
    +blocks: Doctrine\ORM\PersistentCollection {#16064 …}
    +blockers: Doctrine\ORM\PersistentCollection {#16062 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#16060 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#16058 …}
    +reports: Doctrine\ORM\PersistentCollection {#16056 …}
    +favourites: Doctrine\ORM\PersistentCollection {#16054 …}
    +violations: Doctrine\ORM\PersistentCollection {#16052 …}
    +notifications: Doctrine\ORM\PersistentCollection {#16050 …}
    +awards: Doctrine\ORM\PersistentCollection {#16048 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#16046 …}
    +categories: Doctrine\ORM\PersistentCollection {#16044 …}
    -id: 21796
    -password: "$2y$13$ACNmoGKWwRgm/Njn146GG.b25O8.XXYtlu6ZukGNMl7KWiROcYuzK"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#16042 …}
    +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 {#16098
      date: 2024-07-01 11:02:01.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1689039812 {#16097
      date: 2023-07-11 03:43:32.0 +02:00
    }
  }
  "width" => 65
  "height" => 65
  "asLink" => true
]
Attributes 
[]
Component 
App\Twig\Components\UserAvatarComponent {#15961
  +width: 65
  +height: 65
  +user: App\Entity\User {#16096
    +avatar: Proxies\__CG__\App\Entity\Image {#16095 …}
    +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 {#16099
      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 {#16094 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#16092 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#16090 …}
    +entries: Doctrine\ORM\PersistentCollection {#16088 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#16086 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#16084 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#16082 …}
    +posts: Doctrine\ORM\PersistentCollection {#16080 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#16078 …}
    +postComments: Doctrine\ORM\PersistentCollection {#16076 …}
    +postCommentVotes: Doctrine\ORM\PersistentCollection {#16074 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#16072 …}
    +subscribedDomains: Doctrine\ORM\PersistentCollection {#16070 …}
    +follows: Doctrine\ORM\PersistentCollection {#16068 …}
    +followers: Doctrine\ORM\PersistentCollection {#16066 …}
    +blocks: Doctrine\ORM\PersistentCollection {#16064 …}
    +blockers: Doctrine\ORM\PersistentCollection {#16062 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#16060 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#16058 …}
    +reports: Doctrine\ORM\PersistentCollection {#16056 …}
    +favourites: Doctrine\ORM\PersistentCollection {#16054 …}
    +violations: Doctrine\ORM\PersistentCollection {#16052 …}
    +notifications: Doctrine\ORM\PersistentCollection {#16050 …}
    +awards: Doctrine\ORM\PersistentCollection {#16048 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#16046 …}
    +categories: Doctrine\ORM\PersistentCollection {#16044 …}
    -id: 21796
    -password: "$2y$13$ACNmoGKWwRgm/Njn146GG.b25O8.XXYtlu6ZukGNMl7KWiROcYuzK"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#16042 …}
    +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 {#16098
      date: 2024-07-01 11:02:01.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1689039812 {#16097
      date: 2023-07-11 03:43:32.0 +02:00
    }
  }
  +asLink: true
}
user_avatar App\Twig\Components\UserAvatarComponent 16.0 MiB 0.46 ms
Input props 
[
  "user" => App\Entity\User {#16155
    +avatar: Proxies\__CG__\App\Entity\Image {#16154 …}
    +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 {#16158
      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 {#16153 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#16151 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#16149 …}
    +entries: Doctrine\ORM\PersistentCollection {#16147 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#16145 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#16143 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#16141 …}
    +posts: Doctrine\ORM\PersistentCollection {#16139 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#16137 …}
    +postComments: Doctrine\ORM\PersistentCollection {#16135 …}
    +postCommentVotes: Doctrine\ORM\PersistentCollection {#16133 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#16131 …}
    +subscribedDomains: Doctrine\ORM\PersistentCollection {#16129 …}
    +follows: Doctrine\ORM\PersistentCollection {#16127 …}
    +followers: Doctrine\ORM\PersistentCollection {#16125 …}
    +blocks: Doctrine\ORM\PersistentCollection {#16123 …}
    +blockers: Doctrine\ORM\PersistentCollection {#16121 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#16119 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#16117 …}
    +reports: Doctrine\ORM\PersistentCollection {#16115 …}
    +favourites: Doctrine\ORM\PersistentCollection {#16113 …}
    +violations: Doctrine\ORM\PersistentCollection {#16111 …}
    +notifications: Doctrine\ORM\PersistentCollection {#16109 …}
    +awards: Doctrine\ORM\PersistentCollection {#16107 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#16105 …}
    +categories: Doctrine\ORM\PersistentCollection {#16103 …}
    -id: 20657
    -password: "$2y$13$XNERcrvg1/EZkZQbKQ6R6efd5bjo3rlAJRSz0lDRnfkNCV76hr5Me"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#16101 …}
    +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 {#16157
      date: 2023-07-30 16:21:02.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1688878027 {#16156
      date: 2023-07-09 06:47:07.0 +02:00
    }
  }
  "width" => 65
  "height" => 65
  "asLink" => true
]
Attributes 
[]
Component 
App\Twig\Components\UserAvatarComponent {#16241
  +width: 65
  +height: 65
  +user: App\Entity\User {#16155
    +avatar: Proxies\__CG__\App\Entity\Image {#16154 …}
    +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 {#16158
      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 {#16153 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#16151 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#16149 …}
    +entries: Doctrine\ORM\PersistentCollection {#16147 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#16145 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#16143 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#16141 …}
    +posts: Doctrine\ORM\PersistentCollection {#16139 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#16137 …}
    +postComments: Doctrine\ORM\PersistentCollection {#16135 …}
    +postCommentVotes: Doctrine\ORM\PersistentCollection {#16133 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#16131 …}
    +subscribedDomains: Doctrine\ORM\PersistentCollection {#16129 …}
    +follows: Doctrine\ORM\PersistentCollection {#16127 …}
    +followers: Doctrine\ORM\PersistentCollection {#16125 …}
    +blocks: Doctrine\ORM\PersistentCollection {#16123 …}
    +blockers: Doctrine\ORM\PersistentCollection {#16121 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#16119 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#16117 …}
    +reports: Doctrine\ORM\PersistentCollection {#16115 …}
    +favourites: Doctrine\ORM\PersistentCollection {#16113 …}
    +violations: Doctrine\ORM\PersistentCollection {#16111 …}
    +notifications: Doctrine\ORM\PersistentCollection {#16109 …}
    +awards: Doctrine\ORM\PersistentCollection {#16107 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#16105 …}
    +categories: Doctrine\ORM\PersistentCollection {#16103 …}
    -id: 20657
    -password: "$2y$13$XNERcrvg1/EZkZQbKQ6R6efd5bjo3rlAJRSz0lDRnfkNCV76hr5Me"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#16101 …}
    +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 {#16157
      date: 2023-07-30 16:21:02.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1688878027 {#16156
      date: 2023-07-09 06:47:07.0 +02:00
    }
  }
  +asLink: true
}
user_avatar App\Twig\Components\UserAvatarComponent 16.0 MiB 0.48 ms
Input props 
[
  "user" => App\Entity\User {#15978
    +avatar: Proxies\__CG__\App\Entity\Image {#15977 …}
    +cover: Proxies\__CG__\App\Entity\Image {#15976 …}
    +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 {#15981
      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 {#15975 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#15973 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#15923 …}
    +entries: Doctrine\ORM\PersistentCollection {#15925 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#15932 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#15933 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#15935 …}
    +posts: Doctrine\ORM\PersistentCollection {#15937 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#15934 …}
    +postComments: Doctrine\ORM\PersistentCollection {#15927 …}
    +postCommentVotes: Doctrine\ORM\PersistentCollection {#15945 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#15942 …}
    +subscribedDomains: Doctrine\ORM\PersistentCollection {#15950 …}
    +follows: Doctrine\ORM\PersistentCollection {#15947 …}
    +followers: Doctrine\ORM\PersistentCollection {#15955 …}
    +blocks: Doctrine\ORM\PersistentCollection {#15957 …}
    +blockers: Doctrine\ORM\PersistentCollection {#15959 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#16367 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#16361 …}
    +reports: Doctrine\ORM\PersistentCollection {#16174 …}
    +favourites: Doctrine\ORM\PersistentCollection {#16163 …}
    +violations: Doctrine\ORM\PersistentCollection {#16369 …}
    +notifications: Doctrine\ORM\PersistentCollection {#16368 …}
    +awards: Doctrine\ORM\PersistentCollection {#16365 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#16362 …}
    +categories: Doctrine\ORM\PersistentCollection {#16359 …}
    -id: 41651
    -password: "$2y$13$MR/jvQLw20snj7dhCUOzrerIeJOUi.vmMEXqlAliA6M/KYuWQH.Sa"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#16358 …}
    +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 {#15980
      date: 2023-08-21 18:43:45.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1692554254 {#15979
      date: 2023-08-20 19:57:34.0 +02:00
    }
  }
  "width" => 65
  "height" => 65
  "asLink" => true
]
Attributes 
[]
Component 
App\Twig\Components\UserAvatarComponent {#16186
  +width: 65
  +height: 65
  +user: App\Entity\User {#15978
    +avatar: Proxies\__CG__\App\Entity\Image {#15977 …}
    +cover: Proxies\__CG__\App\Entity\Image {#15976 …}
    +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 {#15981
      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 {#15975 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#15973 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#15923 …}
    +entries: Doctrine\ORM\PersistentCollection {#15925 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#15932 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#15933 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#15935 …}
    +posts: Doctrine\ORM\PersistentCollection {#15937 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#15934 …}
    +postComments: Doctrine\ORM\PersistentCollection {#15927 …}
    +postCommentVotes: Doctrine\ORM\PersistentCollection {#15945 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#15942 …}
    +subscribedDomains: Doctrine\ORM\PersistentCollection {#15950 …}
    +follows: Doctrine\ORM\PersistentCollection {#15947 …}
    +followers: Doctrine\ORM\PersistentCollection {#15955 …}
    +blocks: Doctrine\ORM\PersistentCollection {#15957 …}
    +blockers: Doctrine\ORM\PersistentCollection {#15959 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#16367 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#16361 …}
    +reports: Doctrine\ORM\PersistentCollection {#16174 …}
    +favourites: Doctrine\ORM\PersistentCollection {#16163 …}
    +violations: Doctrine\ORM\PersistentCollection {#16369 …}
    +notifications: Doctrine\ORM\PersistentCollection {#16368 …}
    +awards: Doctrine\ORM\PersistentCollection {#16365 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#16362 …}
    +categories: Doctrine\ORM\PersistentCollection {#16359 …}
    -id: 41651
    -password: "$2y$13$MR/jvQLw20snj7dhCUOzrerIeJOUi.vmMEXqlAliA6M/KYuWQH.Sa"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#16358 …}
    +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 {#15980
      date: 2023-08-21 18:43:45.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1692554254 {#15979
      date: 2023-08-20 19:57:34.0 +02:00
    }
  }
  +asLink: true
}
user_avatar App\Twig\Components\UserAvatarComponent 16.0 MiB 0.34 ms
Input props 
[
  "user" => App\Entity\User {#16352
    +avatar: Proxies\__CG__\App\Entity\Image {#16349 …}
    +cover: Proxies\__CG__\App\Entity\Image {#16350 …}
    +email: "TCB13@lemmy.world"
    +username: "@TCB13@lemmy.world"
    +roles: []
    +followersCount: 0
    +homepage: "front"
    +about: ""
    +lastActive: DateTime @1729518803 {#16172
      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 {#16347 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#16345 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#16343 …}
    +entries: Doctrine\ORM\PersistentCollection {#16341 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#16339 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#16337 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#16335 …}
    +posts: Doctrine\ORM\PersistentCollection {#16333 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#16331 …}
    +postComments: Doctrine\ORM\PersistentCollection {#16329 …}
    +postCommentVotes: Doctrine\ORM\PersistentCollection {#16327 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#16325 …}
    +subscribedDomains: Doctrine\ORM\PersistentCollection {#16323 …}
    +follows: Doctrine\ORM\PersistentCollection {#16321 …}
    +followers: Doctrine\ORM\PersistentCollection {#16319 …}
    +blocks: Doctrine\ORM\PersistentCollection {#16317 …}
    +blockers: Doctrine\ORM\PersistentCollection {#16315 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#16313 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#16311 …}
    +reports: Doctrine\ORM\PersistentCollection {#16309 …}
    +favourites: Doctrine\ORM\PersistentCollection {#16307 …}
    +violations: Doctrine\ORM\PersistentCollection {#16305 …}
    +notifications: Doctrine\ORM\PersistentCollection {#16303 …}
    +awards: Doctrine\ORM\PersistentCollection {#16301 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#16299 …}
    +categories: Doctrine\ORM\PersistentCollection {#16297 …}
    -id: 43677
    -password: "$2y$13$67WvGuLt4FPbc4trvxnH0ODZHTvTlMWI7kaafAJZUzYiSsXw.KDqi"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#16295 …}
    +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 {#16353
      date: 2024-10-22 05:12:44.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1693492241 {#16351
      date: 2023-08-31 16:30:41.0 +02:00
    }
  }
  "width" => 65
  "height" => 65
  "asLink" => true
]
Attributes 
[]
Component 
App\Twig\Components\UserAvatarComponent {#16412
  +width: 65
  +height: 65
  +user: App\Entity\User {#16352
    +avatar: Proxies\__CG__\App\Entity\Image {#16349 …}
    +cover: Proxies\__CG__\App\Entity\Image {#16350 …}
    +email: "TCB13@lemmy.world"
    +username: "@TCB13@lemmy.world"
    +roles: []
    +followersCount: 0
    +homepage: "front"
    +about: ""
    +lastActive: DateTime @1729518803 {#16172
      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 {#16347 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#16345 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#16343 …}
    +entries: Doctrine\ORM\PersistentCollection {#16341 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#16339 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#16337 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#16335 …}
    +posts: Doctrine\ORM\PersistentCollection {#16333 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#16331 …}
    +postComments: Doctrine\ORM\PersistentCollection {#16329 …}
    +postCommentVotes: Doctrine\ORM\PersistentCollection {#16327 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#16325 …}
    +subscribedDomains: Doctrine\ORM\PersistentCollection {#16323 …}
    +follows: Doctrine\ORM\PersistentCollection {#16321 …}
    +followers: Doctrine\ORM\PersistentCollection {#16319 …}
    +blocks: Doctrine\ORM\PersistentCollection {#16317 …}
    +blockers: Doctrine\ORM\PersistentCollection {#16315 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#16313 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#16311 …}
    +reports: Doctrine\ORM\PersistentCollection {#16309 …}
    +favourites: Doctrine\ORM\PersistentCollection {#16307 …}
    +violations: Doctrine\ORM\PersistentCollection {#16305 …}
    +notifications: Doctrine\ORM\PersistentCollection {#16303 …}
    +awards: Doctrine\ORM\PersistentCollection {#16301 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#16299 …}
    +categories: Doctrine\ORM\PersistentCollection {#16297 …}
    -id: 43677
    -password: "$2y$13$67WvGuLt4FPbc4trvxnH0ODZHTvTlMWI7kaafAJZUzYiSsXw.KDqi"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#16295 …}
    +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 {#16353
      date: 2024-10-22 05:12:44.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1693492241 {#16351
      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 {#16037
    +avatar: Proxies\__CG__\App\Entity\Image {#16036 …}
    +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 {#16040
      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 {#16035 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#16033 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#16031 …}
    +entries: Doctrine\ORM\PersistentCollection {#16029 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#16027 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#16025 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#16023 …}
    +posts: Doctrine\ORM\PersistentCollection {#16021 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#16019 …}
    +postComments: Doctrine\ORM\PersistentCollection {#16017 …}
    +postCommentVotes: Doctrine\ORM\PersistentCollection {#16015 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#16013 …}
    +subscribedDomains: Doctrine\ORM\PersistentCollection {#16011 …}
    +follows: Doctrine\ORM\PersistentCollection {#16009 …}
    +followers: Doctrine\ORM\PersistentCollection {#16007 …}
    +blocks: Doctrine\ORM\PersistentCollection {#16005 …}
    +blockers: Doctrine\ORM\PersistentCollection {#16003 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#16001 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#15999 …}
    +reports: Doctrine\ORM\PersistentCollection {#15997 …}
    +favourites: Doctrine\ORM\PersistentCollection {#15995 …}
    +violations: Doctrine\ORM\PersistentCollection {#15993 …}
    +notifications: Doctrine\ORM\PersistentCollection {#15991 …}
    +awards: Doctrine\ORM\PersistentCollection {#15989 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#15987 …}
    +categories: Doctrine\ORM\PersistentCollection {#15985 …}
    -id: 39464
    -password: "$2y$13$wQAP4Gif3ESopfZf00xAU.zwr9iTTX.ev3twB9omsse0v00sxuD/G"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#15983 …}
    +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 {#16039
      date: 2024-10-06 22:13:37.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1691480767 {#16038
      date: 2023-08-08 09:46:07.0 +02:00
    }
  }
  "width" => 65
  "height" => 65
  "asLink" => true
]
Attributes 
[]
Component 
App\Twig\Components\UserAvatarComponent {#16469
  +width: 65
  +height: 65
  +user: App\Entity\User {#16037
    +avatar: Proxies\__CG__\App\Entity\Image {#16036 …}
    +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 {#16040
      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 {#16035 …}
    +magazineOwnershipRequests: Doctrine\ORM\PersistentCollection {#16033 …}
    +moderatorRequests: Doctrine\ORM\PersistentCollection {#16031 …}
    +entries: Doctrine\ORM\PersistentCollection {#16029 …}
    +entryVotes: Doctrine\ORM\PersistentCollection {#16027 …}
    +entryComments: Doctrine\ORM\PersistentCollection {#16025 …}
    +entryCommentVotes: Doctrine\ORM\PersistentCollection {#16023 …}
    +posts: Doctrine\ORM\PersistentCollection {#16021 …}
    +postVotes: Doctrine\ORM\PersistentCollection {#16019 …}
    +postComments: Doctrine\ORM\PersistentCollection {#16017 …}
    +postCommentVotes: Doctrine\ORM\PersistentCollection {#16015 …}
    +subscriptions: Doctrine\ORM\PersistentCollection {#16013 …}
    +subscribedDomains: Doctrine\ORM\PersistentCollection {#16011 …}
    +follows: Doctrine\ORM\PersistentCollection {#16009 …}
    +followers: Doctrine\ORM\PersistentCollection {#16007 …}
    +blocks: Doctrine\ORM\PersistentCollection {#16005 …}
    +blockers: Doctrine\ORM\PersistentCollection {#16003 …}
    +blockedMagazines: Doctrine\ORM\PersistentCollection {#16001 …}
    +blockedDomains: Doctrine\ORM\PersistentCollection {#15999 …}
    +reports: Doctrine\ORM\PersistentCollection {#15997 …}
    +favourites: Doctrine\ORM\PersistentCollection {#15995 …}
    +violations: Doctrine\ORM\PersistentCollection {#15993 …}
    +notifications: Doctrine\ORM\PersistentCollection {#15991 …}
    +awards: Doctrine\ORM\PersistentCollection {#15989 …}
    +subscribedCategories: Doctrine\ORM\PersistentCollection {#15987 …}
    +categories: Doctrine\ORM\PersistentCollection {#15985 …}
    -id: 39464
    -password: "$2y$13$wQAP4Gif3ESopfZf00xAU.zwr9iTTX.ev3twB9omsse0v00sxuD/G"
    -totpSecret: null
    -totpBackupCodes: []
    -oAuth2UserConsents: Doctrine\ORM\PersistentCollection {#15983 …}
    +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 {#16039
      date: 2024-10-06 22:13:37.0 +02:00
    }
    +apDeletedAt: null
    +apTimeoutAt: null
    +visibility: "visible             "
    +createdAt: DateTimeImmutable @1691480767 {#16038
      date: 2023-08-08 09:46:07.0 +02:00
    }
  }
  +asLink: true
}
related_categories App\Twig\Components\RelatedCategoriesComponent 16.0 MiB 6.73 ms
Input props 
[
  "magazine" => "askelectronics@discuss.tchncs.de"
  "tag" => null
]
Attributes 
[]
Component 
App\Twig\Components\RelatedCategoriesComponent {#16531
  +limit: 4
  +tag: null
  +magazine: "askelectronics@discuss.tchncs.de"
  +type: "related"
  +title: "related_categories"
  +refreshedRandom: false
  -repository: App\Repository\CategoryRepository {#16532 …}
  -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 3.14 ms
Input props 
[
  "magazine" => "askelectronics@discuss.tchncs.de"
  "tag" => null
]
Attributes 
[]
Component 
App\Twig\Components\RelatedPostsComponent {#16608
  +limit: 4
  +tag: null
  +magazine: "askelectronics@discuss.tchncs.de"
  +type: "magazine"
  +post: null
  +title: "related_posts"
  +refreshedRandom: false
  -repository: App\Repository\PostRepository {#16609 …}
  -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 2.30 ms
Input props 
[
  "magazine" => "askelectronics@discuss.tchncs.de"
  "tag" => null
]
Attributes 
[]
Component 
App\Twig\Components\RelatedEntriesComponent {#16681
  +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 0.42 ms
Input props 
[]
Attributes 
[]
Component 
App\Twig\Components\SupportUsBlock {#16750
  +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 {#16751 …}
}
featured_magazines App\Twig\Components\FeaturedMagazinesComponent 16.0 MiB 3.02 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 {#16839
  +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 …}
}