For some time I have been accumulating 18650 cells from recycling in order to make batteries for all types of projects.
I've already made myself a microwaveoven-based spotwelder, which works, but I haven't startedthe battery assembly because I have nothing to charge the packs, and don't want to buy x chargers: one for a pack of 12v, another for 24v, a 3rd for pack of 36v, 48v, 52v, 60v ....
at worst I would make up my mind and fall back on a gophert or something like that but before, for the fun of diy, would it be viable to try something based on this kind of module on aliexpress to transform the 12v from a pc power supply at the desired voltage
https://fr.aliexpress.com/item/4001...916559866542346511e18f4!10000015567880156!sea
then add a small voltmeter / ampmeter module to visualise the right output settings
https://fr.aliexpress.com/item/1005...416559862851945272ea64f!12000016794313270!rec
and to finish the assembly with this module which I already have, to cut the load at the desired threshold.
https://fr.aliexpress.com/item/4001...d16559918616303322e7822!10000014203182133!sea
ideally it would just be the boost module and the voltmeter to buy to make a "universal" power supply / charger because I already have plenty of pc power supplies that give many amps on the 12v rail, recovery fans also, and the module to cut the load past a certain threshold:
is there a way to get something ok with a pc power supply as 12v source ? enough to charge - not necessarily quickly, but at least safely - any diy battery between 8v and 60v for example?
i know there are better ways to do it, more expensive also, but can i just get something functionnal with my 30$ idea ?
I've already made myself a microwaveoven-based spotwelder, which works, but I haven't startedthe battery assembly because I have nothing to charge the packs, and don't want to buy x chargers: one for a pack of 12v, another for 24v, a 3rd for pack of 36v, 48v, 52v, 60v ....
at worst I would make up my mind and fall back on a gophert or something like that but before, for the fun of diy, would it be viable to try something based on this kind of module on aliexpress to transform the 12v from a pc power supply at the desired voltage
https://fr.aliexpress.com/item/4001...916559866542346511e18f4!10000015567880156!sea
then add a small voltmeter / ampmeter module to visualise the right output settings
https://fr.aliexpress.com/item/1005...416559862851945272ea64f!12000016794313270!rec
and to finish the assembly with this module which I already have, to cut the load at the desired threshold.
https://fr.aliexpress.com/item/4001...d16559918616303322e7822!10000014203182133!sea
ideally it would just be the boost module and the voltmeter to buy to make a "universal" power supply / charger because I already have plenty of pc power supplies that give many amps on the 12v rail, recovery fans also, and the module to cut the load past a certain threshold:
is there a way to get something ok with a pc power supply as 12v source ? enough to charge - not necessarily quickly, but at least safely - any diy battery between 8v and 60v for example?
i know there are better ways to do it, more expensive also, but can i just get something functionnal with my 30$ idea ?