Features1SINE WAVE TRIMODAL CONTROLLER: The controller adopts sine wave 3 mode controller, which can provide smoother and more natural power output. Matching with hall or no hall brushless motor with self learning function. 2MULTIPLE VOLTAGE AND POWER APPLICATION: This controller is suitable for 36V500W, 36V750W, 48V500W and 48V750W with hall without hall brushless motors. Whether you need lower power for daily riding or higher power for challenging rides, you can find the right option for you. 3METAL CASE: The controller case of the bike lithium conversion kit is made of metal with a grooved design. This housing not only provides heat dissipation, but also effectively protects the internal circuitry from overheating problems and extends the life of the controller. 4PANEL PERFORMANCE: The panel of the bike lithium conversion kit is made of ABS material. This material is lightweight, strong and durable, and has good toughness and waterproof performance, which can better protect the internal circuit and make the overall system more durable. 5ENHANCE RIDING FUN: The main use of the lithium bicycle conversion kit is for DIY electric bikes, electric cars, electric scooters and folding bikes. The modified bike can provide stronger power support and greatly improve the fun of riding.SpecificationItem Type: Bicycle Lithium Battery Retrofit KitMaterial: Aluminum, ABS, PlasticWeight: Approx. 685g / 24.2ozController Voltage: DC24 36 48VCurrent: 261APackage List1 x Controller1 x Panel1 x Panel Manual1 xTriggerShifter1xPowerAssistSensor1xPowerAssistMagneticRing1 x Instruction Manual