Therefore a pack would have to use nickel that is approx. 2.5mm thick to equal the current capacity of our packs. For reference, 2.5mm is thicker than the lead that runs through a #2 pencil.
Current travels through our Packs effortlessly. Because we build our packs with thick copper connectivity, there is little resistance. A pack with the same cells, using thin nickel, will have a lot of resistance in a high current situation.