I am making a prototype lithium battery of 2kw / 40 amps.
it's 8p14s, and every bank of 8 parallel is joined with copper sheet in solderless contacts.
I have bought some 0.1mm thick copper sheet and i have measured that it can be maximum 70mm of trace width to carry the current.
It is too thin to carry 2000 Watts even if it's 7cm wide, and very short in length, as it's equivalent to a 1mm wire?
Even if the connections in series are very short, say one inch each, having a 1mm equivalent copper sheet connecting them is a no-no?
Is this true?
Furthermore, by using copper sheet instead of round wire, the surface area is about 20 times larger, so heat dissipation should be at least twice as fast, so i can use thinner wire?