This is an excellent replacement controller for your Bafang BBS01B 500W mid - drive motor. It offers reliable performance and ensures smooth operation of your motor.

To use this controller, first make sure your Bafang BBS01B 500W mid - drive motor is turned off. Connect the controller to the motor following the wiring diagram provided. Once connected, you can turn on the motor and start using it. When using, avoid overloading the motor as it may damage the controller. For maintenance, keep the controller clean and dry. Check the connections regularly to make sure they are tight. If you notice any issues, stop using the controller immediately and consult a professional.