Thanks for the reply! Learning things here.
var area_mil = (sq_area_btw_groups / n_para) * 1550 * (0.018/spec_res);
Where does the 1550 and 0.018 come from? I’m not able to find them in IPC-2221A
Converting mm2 to mils2 for the formula
Converting the nickels resistance to copper
Basically pretending the nickel strip is a thinner copper track. So the exposed area and resistive losses are the same.
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Hey,
This is an interesting way in calculation ampacity. Have you found the calculator to be accurate? I see Section 6.2 in the IPC spec, and the equation there.
Accurate enough for DIY eFoil battery packs for sure