I have a custom PCB with a 2.6Ah 4 cell pack. On multiple boards now, over time, I have observed failing (burned out) PCB traces between the battery connector and the VC1 through VC3 voltage sense inputs. I am using 100 ohm current limiting resistors and the traces are 12 mil (0.5oz/ft2). The datasheet indicates that these paths are used for cell balancing and that bypass FETs are used to charge one cell at a time. What is the theoretical maximum current that can flow through these paths?
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