May i ask you regarding a battery i wanna build if this would be ok:
So i wanna make a 16s 4p battery with 27100 cells tht have a discharge current of 45a
When i spot weld the seriel connections with 0.2x20mm nicel strips do you think this would be ok or do i need to add additional copper wires between them?
Thx for your input
Molicel P42a can only do that much current if you monitor their temperature. 25A, or maybe 30A is probably the max you should be running them at per cell.
When choosing Nickel, I like to go buy this chart of data gathered experimentally with nickel welded to cells made by some guy on the e-bike forum.
So if you’re building a 4P battery, and expect 25A per cell max when drawing power continuously, you need the series connection to be good for 100A. From this chart we can estimate that 0.2mm x 20mm nickel should be good for about 36A max. So if your series connections are just pure nickel strip, then you should stack 3-4 layers of it.
This is why for high current packs usually people connect the series connections with regular wires or copper braid, and not just nickel.
thanks @skyart awesome video
need a hotter iron it seems
got a ts100 which goes to 400c and only has a tiny tip
any recommendations for a cheap good iron?