For a charger you can use a TP4056 module, many of these have protection built-in. You can tell by them having two more small chips near the solder pads, and of those pads having 4, two for battery + and - , and two for whatever you are attaching that will be protected
There are lots of resources online, for example bigclives videos.
This is the gist:
Depends on the kind of model, but usually you have two caps one one tube. If you take the one opposite to the mouthpiece out with a pair of plyers, you can usually slide the electronics out. Cut the wire at the battery and there you go. Just be careful: they usually are the pouch type, wich means its not that hard to squish, puncture or bend them, which might anger the spicy chemicals inside enough to have it ignite. Put them in the little plastic containers for photigraphic film rolls, pills, or something else rigid. Usually they have solder tabs that you can poke through the lid and bottom to connect to them. You can also solder some wire to these tabs instead.
Make sure to always follow safety precautiobs for small lithium cells, for example not heating it above 50°C. You might also want to add a cheap single li-ion cell protection PCB
You can repurpose them for low-power applications like wireless sensors. If you need more capacity, solder them in parallel, after making sure they are at the same voltage ±0.1V
Illegal substances are not allowed by the very definition of the term. Discussions regarding these substances focus on whether or not their status of being illegal should be repealed or continued as an “allowed illegal substance” would be a paradox in a court of law.
you can easily find out by rightclicking the image and showing it in a new tab and copypasting the url into a texteditor, then rightclicking the image in the discord, copying the url, and pasting that too, and comparing both up to the ? (ignore everything afterwards)
I dont think the resistors are faulty but the design. Resistors (especially low-ish value 22Ohm ones) are meant to dissipate energy as heat. Putting them in a cramped housing made of plastic, then using them to dissipate high power is going to build up heat in there. There could also be another component faulty that puts too much current into the resistors. They are probably part of the balancing circuit.
Inject liberally into veins switches, connectors, and other electronic moving parts that I’d like to be waterproof. (0. Cover PCB in nail polish or specially-made products)