New DC Governor Motor 48V 1500W Electric Bike E-bike Scooter Brushless Motor Speed Controller hotFeature:Strong Riding Stability120/60Phase Compatible Launch Anti-speed FunctionWaterproof and Moisture-proofHall/Hallless Dual Mode CompatibleEnable Line Short Circuit Protection FunctionSpecifications:Input Voltage: 48VMocciation: 1500W Current Limit: 45A Undervoltage Protection: 42V Application: High and Low Phase Angle: Automatic Feature: anti-theft three-speed reverse gearFirst, look at the voltage levels of the electric car battery, corresponding to the selected voltage regulator, look at the size of the current controller you used before, such as the current is 16A-18A 350W controller, 22A-24A controller is 450W, 28A-30A controller is 500W,31A-33A is 600W controller, 33A-35A is 800W controller, 36A-38A is 1000W controller, 40A-43A is 1200W controller, 50A is about 2000W controller. Such a controller of choice, if the original car is 350W controllers, we recommend using a larger one so that you can take advantage of the highest speed and power of the motor. Size: 25.2x10.6cm/9.92x4.17inchNote: Please allow 1-3mm error due to manual measurement. Pls make sure you do not mind before you make a bid, due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!Package Included:1x Brushless Motor Speed Controller