Feature: 1. Kit Content: Bicycle lithium conversion controller kit contains the electric motor controller and S866 display, suitable for their own DIY modification, to meet all needs. 2. Motor Controller: The controller housing is made of premium metal with groove design, which can protect the internal circuitry due to good heat dissipation, thus avoiding thermal overload. 3. Waterproof Display: The display is made of premium ABS material, which is light, strong and durable, with fine workmanship, good toughness and waterproof performance, providing better protection for the internal circuitry and making it more durable. 4. Multifunctional Display: It displays many useful data on your bike while riding, such as on off buttons, light switches, battery level display and other functions, a display that allows you to keep track of the situation. 5. Main Uses: 22A controller kit for 500W motors, DIY electric bikes, electric scooters, folding bikes, etc.; easy to maintain, bike lithium conversion set greatly improves the fun of riding, suitable for cyclists who like challenges. Specification: Item Type: Electric Bike Lithium Battery Conversion Kit Weight: 428g / 15.10oz Material: ABS Rubber Aluminum Metal Controller Rated Voltage: DC 36V 48V Controller Current: 22A Controller Speed Setting: 1.1-4.2V Booster: 1:5 Applicable Motor Power: 500W Brake: Low imput. Package List: 1 x Controller1 x Display2 x Instruction Manual