Features1IMPROVED PERFORMANCE: Enhance your bike motor with the 250W lithium battery modification controller. Enjoy increased power and efficiency for a more exhilarating ride. 2DURABLE CONSTRUCTION: Made from high strength aluminum alloy and rubber materials, this controller ensures durability and long lasting performance. Ride with confidence on any terrain. 3OPTIMAL GUARD: The controller features an external case made of aluminium alloy. Thanks to its groove design, it possesses heat dissipation abilities, protecting the internal circuit and preventing overheating and overload. 4LONG DURABILITY: With high performance wires and waterproof connectors, the controller is durable and able to withstand long term use. These powerful safety features ensure a low malfunction rate. 5HIGH CURRENT OUTPUT: With a current rating of 15A, this modification controller provides ample power for your bike motor. Enjoy smooth acceleration and improved overall performance.SpecificationItem Type: ElectricBicycle ControllerMaterial: Aluminum Alloy, RubberMotor Power: 250WProduct Size: Controller: Approx.85 x 50 x 30mm / 3.35 x 1.97 x 1.18inConnector Type: Motor Wire Waterproof Connector, Other Wire Ordinary ConnectorCurrent: 15ARated Voltage: DC 36V 48VPackage List1 x Controller