Without going to Attopilot and making custom cables is this a sound way to keep using my Pixhawk power module. I'm consistently going beyond the 60A max sensing. Could this be a solution ?
Please see attached graphic
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no, that would need the two packs to have exacly same change, and discharge profile. Mpt realistic over time.
It would "work" - but precision would be bad. you could even register negative current when pack to the left had a little higher voltage than the one to the right.
To solve it properly, you could replace the resistor shunt on the power module with one with about half the resistance of 5mOhm , (or add another 5mOhm in paralell) then compansate in calibration.
Also, add copper on the GND plane of the power module to make it happy with that current, and solder wires close to the resistor on the positive side of the module.