Xiaomi 4 Lite Gen2 Hall board reads rotor position signals inside the scooter motor. This small curved PCB assembly has fitted sensors and solder pads for use when repairing the motor sensor circuit. This is an original replacement part.

Xiaomi 4 Lite Gen2 Hall board with fitted sensors

The board has marked wire soldering positions, while the sensor legs extend below the PCB edge. Its shape must match the mounting and sensor positions inside the motor. Before replacing it, identify whether the fault is in this assembly, its wiring or the motor controller.

• Compatibility: Xiaomi 4 Lite 2nd Gen electric scooter.
• Use: motor Hall sensor assembly.
• PCB dimensions: approximately 42 × 10 mm.
• Height including protruding parts: approximately 26 mm.
• Contact markings: A, B, C, +, − and S.
• Package: 1 board with sensors.

Compare the board construction

Check the curve of the PCB, sensor positions, contacts and their arrangement against the board removed from the motor. The general component name alone is not enough to identify a matching replacement. A board with a different layout may not fit the intended sensor positions.

Connecting the wiring

This assembly uses solder pads, so replacement involves transferring and correctly soldering the motor wires. A separate wire harness and motor controller are not included. Record the existing wire positions before disconnecting them and follow the wiring arrangement for the specific motor assembly.

After the repair, check insulation around the joints and test motor operation before completing the wheel assembly. Replacing the sensor board will not repair a damaged wire or a fault elsewhere in the motor electronics.