Key Considerations When Replacing an Electric Scooter Controller with a Different Brand

1. Voltage and Current Compatibility

• The battery voltage must match the supported voltage range of the controller; otherwise, it may damage the controller or battery.

  • For example, a 72V battery must be paired with a 72V-compatible controller.

• The maximum current output of the controller should align with the motor’s needs. If too low, the motor will be underpowered; if too high, it could overheat or damage the motor.

2. Motor Type Compatibility

• Most electric scooters use brushless DC (BLDC) motors, so the controller must support this type.

• The motor’s pole pair count must also match; mismatches will result in improper operation or failed rotation.

3. Wiring and Connector Compatibility

• Phase wires (U/V/W) and Hall sensor wires (usually 5 wires) must be connected correctly.

  • Use a Hall tester or trial-and-error method to ensure the motor rotates smoothly and in the correct direction.

• Check if the throttle, brake, lights, and display connectors are physically and electrically compatible.

4. Display/Instrument Compatibility

• Many controllers are paired with specific displays (e.g., Votol, Liviae, JB, Yunli), and are not cross-compatible.

  • Replacing the controller often means you must also replace the matching display, or else you won’t be able to configure or monitor system parameters.

5. Feature Support Differences

• Confirm whether the new controller supports the same features as the original, such as:

  • NFC unlocking

  • Bluetooth and app control

  • Cruise control
    

  • Regenerative braking (EBS/KERS)
    

⚠️ Common Issues and Solutions

🔧 Practical Advice

• When purchasing a new controller, choose original or matched controller + display kits to avoid compatibility issues.

• Always consult the wiring diagrams and manuals before installation.

• If you're unfamiliar with electric wiring, it's best to have the replacement done.