It is recommended to use the power-assisted mode during the uphill process. Do not use the pure electric mode, otherwise the controller will easily burn out. Thank you very much for your cooperation. Easy to convert, DIY rear wheel electric bicycle conversion kit, suitable for bicycles with a rear drop size "170mm/190mm", easily convert your pedal bicycle to motorized bicycle within 1 hour. Before installing the motor, please follow the steps in the manual to connect the motor to see if the motor can work normally.Model:72V 3000W Fat Bike Rear Hub Motor. 1 PCS Rear Hub Motor with Rim and Spokes. 1 PCS Display(LCD3, LCD5, LCD8Hoption). 1 Pair Brake Levers(We default to shipBrake Levers, it can be changed to Brake Sensors if you need). Gifts: 1 Controller Bag(not battery) + 1 Disc brake+1Torque Arm+1Install cable ties and stretch film+1Installation Manual.