Features1Delivery: Bicycle lithium battery retrofit controller kit includes 15A JN controller; S800 panel, handle; Boost sensor wiring; Boost sensor booster pad, controller box, power off brake handle. It is suitable for DIY modification and meets all requirements. 2Grooved: The controller shell is made of metal with groove design. Due to its good heat dissipation function, it can protect the internal circuit to avoid thermal overload. 3ABS Panel: The panel is made of ABS material, which is light, durable, fine and has good toughness and waterproof performance, providing better protection for the internal circuit and making it more durable. 4Multiple Functions: S800 panel has multiple functions; When riding a bike, the product will display many useful data on your bike, such as switch buttons, light switches, battery power display and other functions. A display screen can let you keep track of the situation. 5Application: 15A controller small kit is applicable to 250W motor; Main applications: DIY electric bicycle, electric scooter, folding bike, etc; It is easy to maintain. The lithium battery modification of the bicycle greatly improves the fun of riding. It is suitable for cyclists who like challenges.SpecificationItem Type: Electric Bicycle Conversion KitGross Weight: 1138g/2.5lbMaterial: ABS, rubber, aluminum alloy, metalController Size: 90x50x30mm/3.5x2.0x1.2inCurrent: 15ARated Voltage of Controller: DC 36V 48VController Speed Setting: 1.1-4.2VApplicable Motor Power: 250WPackage List1 x Controller1 x ControllerBox2 x Fixing Bracket8 x Screw1 x Controller Instruction1 xS800Panel2xPowerOff Brake Handle2 xTwistHand Grip1xPowerAssistedMagneticDisc1xPowerLine