Features1Kit Contents: Bicycle lithium conversion controller small kit contains 15A controller, M5 display, thumb throttle and power assist sensor. Suitable for your own DIY conversion to meet all needs 2Controller: The controller shell is made of metal with a grooved design that protects the internal circuitry from thermal overload due to good heat dissipation. 3ABS Display: Made of prime ABS material, lightweight, sturdy and durable, fine workmanship, good toughness and waterproof performance, providing better protection for the internal circuitry and making it more durable. 4Multi Function Display: While riding your bike, this product will display many useful data on your bike, such as on/off buttons, light switches, battery level display, and other functions, a display can keep you in control at all times. 5Installation Condition: Display mounting caliber is 22.2mm, accessory for electric bicycles, electric scooters, etc. 15A controller small kit for 250W motors. 6Main Use: DIY electric bike, electric scooter, folding bike, etc.; Easy to maintain, lithium bike modification greatly improves the riding fun, suitable for cyclists who like challenges.SpecificationItem Type: Electric Bicycle Lithium Battery Conversion Kit Weight: 630g / 22.22oz Material: ABS, Rubber, Aluminum Alloy, MetalApplicable: Applicable to 250W motor Controller Size: 8.5x5x2.7cmController Current: 15AController Speed Setting: 1.1-4.2VBraking: Input low levelPackage List1 x Controller1 x Display1 x Thumb Throttle1 x Power Assist Cable1 x Power Assist Sensor2 x Instruction Manual