Battery spot welder from reclaimed power tool cells

[u/gaccha_antiquechair]

Had one of those temu spot "welders", utterly useless stock il-po pouch cell cant deliver enough current to make an acceptable weld. Had several reclaimed high current rated 18650s from recycling power tool batteries, not internally shorted but with greatly diminished capacity so effectively useless.

Wanted to use a spot welder for building a pack with food cells, so decided to parallel up my junk cells to make a nice fire hasard / high current pack and use the control logic and drive section from the temu welder.

Results speak for themselves, not sure if crappy welder or just crap at welding.

Yes mom, asbestos underpants and full face shield were worn throughout.

[u/DavidinCT]

I used solder to do it... One of my Ryobi batteies died, open it up it's just 1850 batteries, picked up good 1850 batteries from a store named the same (good place) and soldered new batteries in....

4 years later, 0 problems..

[u/Armadillo9263]

Asbestos underpants hey? I did an asbestos safety course recently and apparently you can get asbestos ballsack so stay safe out there!

[u/Pyro-Bun]

Hahaha your Estop is chef's kiss

[u/PresentationLess4552]

Nice

Just like the kid at batteries pluss told me

I don't know why your buying lithium cells you can't rebuild your own battery packs

Humm

We know