If you arrange it well, you can use a single layer of nickel and never exceed 7.5A in the nickel, and that is only for a short stretch from the welds on cell 2 to the black wire’s solder, and from the welds on cell 4 to the red wire’s solder. Most of the nickel is carrying 5A or less. The dual 16AWG feeds a single 12AWG on the output and I use this battery for 29A maximum continuous.
