Features1DIY Modification Kit: The electric vehicle lithium battery modification kit includes a 17A controller, S830 display, thumb throttle, booster, and brake handles, meeting various DIY needs. 2Metal Controller Shell: The controller shell is made of metal, with groove design to ensure good heat dissipation performance and protect internal circuits from thermal overload. 3ABS Display Shell: The display shell is made of ABS material, lightweight and durable, with good toughness and waterproof performance, providing better protection for internal circuits. 4Multiple Functions: This electric vehicle display can display many useful data on your bicycles, such as switch button, light switch, battery level, etc., which is clear and intuitive. 5Applicable Range: This 17A controller kit is suitable for 250W350W motor, with 22.2mm display mount diameter, suitable for DIY electric bike, electric vehicle, electric scooter, folding bike, etc.SpecificationItem Type: Electric Vehicle ControllerMaterial: ABS, Rubber, Aluminum Alloy, MetalApplicable Motor: Suitable for 250W-350W MotorController Size: Approx. 93 x 50 x 30mm / 3.7 x 2 x 1.2inCurrent: 17AController Speed Setting: 1.1-4.2VBraking Input: Low LevelPackage List1 x Display1 x Controller2 x Brake Handle1 x Thumb Throttle1 x Power Cable1 x Boost Magnetic Sheet2 x User Manual