Why not use thread as shunt ?
The power module use a 0.0005 shunt resitor for a mximum of 90 amperes.
If we use the thread as shunt we can measure a current more than 90 amperes.

Example for 10 AWG wire with 10 cm long :
The resistor for 10 AWG is ~ 3.27 ohms per km
so for 10 cm is : 0.000327 ohm

after that, we need to calibrate the current with the mission planner and hope that it works

It is just an idea, I have not tested it.

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