this conductive path is 200 μΩ typical, providing low power loss in the application.
Support 3x I2C-INA-BM on one I2C bus in parallel.
No calibration required, Flight controller with ArduPilot fw can easily get accurate current & bus voltage readouts via I2C bus.

Specifications
INA228 85-V, 20-Bit, Ultra-Precise Power monitor IC With I2C Interface
Battery Voltage sense input: 0~85V
Current Sense Range: 0~204.8A
Load current on current sensing resistor: 150A(Continuous), 204.8A(Burst)
Voltage accuracy: ± 0.1%
Current accuracy: ± 2%
Interface: I2C (Decimalism Address 69 by default, 68 and 65 options)

Power supply for I2C-INA-BM board : 4~9V @5V pad/pin
Power consumption: 1mA
LED Red, 3.3V indicator
Operating Temperatures: -40~125 °C

Physical
Board Size: 27mm*20mm*6mm. 4g
3D file : I2C-INA-BM_STEP.zip

Parameters
BATT*_MONITOR ->21 (INA2XX)
BATT*_I2C_ADDR -> 0 (or 69, 68, 65)
BATT*_I2C_BUS -> 0/1/2 , depends on the FC I2C bus connected
BATT*_SHUNT -> 0.0002
BATT*_MAX_AMPS -> 204.8

Packing
1x I2C-INA-BM board
1x JST-GH-4P to JST-GH-4P 20cm silicon wire

Tips
The big pad on the bottom side is a dead pad. No any circuit network on it.
Solder the positive wires as close as possible to both sides of the current sensing resistor.
Compatible with ArduPilot firmware only now.