Well, that’s sort of my issue. I’m planning on making a DIY spot welder. So I don’t really know how thick material I’ll be able to use. IE, I’d like to not overshoot. But beyond that, this is really just a learning exercise, so I’d like to know what is correct.
I don’t have a schematic, but as for as the nickel stripping is concerned it’s as simple as possible. Just alternating sells laid out side by side. I’ll attach a simple drawing to illustrate what I mean.
assuming true %100 Nickel. and 10mm wide, .15mm thick should suffice.
Ive run 10A through a bare 6" strip at .15mm thick and 8mm wide. and it only got warm to the touch. Given the shorter distance, I believe bursts of 20A will not be an issue.
If you want thicker strips without having to weld them. just double up
Any decent diy welder should handle .15mm
Can you link the type of DIY welder youre building?
if its 1p youre going to really be pulling a lot through the cells and nickel. there’s .3mm nickel and even wider than 10mm. most people have 4 cells in parallel and rarely if ever get near even 15amps per nickel strip. youre not the norm with 1p
and the bms discharge only with that low amp ability