Nulkomma Brushless Motor Controller X813-AB21C-12 48V 18A E-Bike Scooter Universal E-Bike Conversion Kit Bicycle Speed Controller

The X813-AB21C-12 Brushless Motor Controller is a high-performance, universal speed controller designed for 48V electric bicycles, scooters, and e-bike conversion kits. Engineered for reliable and efficient power delivery, this 18A controller ensures smooth acceleration, stable speed control, and strong performance for daily commuting, mountain biking, and DIY electric bike upgrades.

Built with advanced brushless DC technology, it offers low noise, low heat generation, and high efficiency to extend battery and motor life. The unit includes full safety protections: over-current, over-temperature, under-voltage, phase loss, and short-circuit protection, keeping your electrical system safe and stable in all riding conditions.

With a durable, compact design and easy wiring setup, this universal controller is widely compatible with most 48V e-bike and scooter motors. Whether you’re repairing, replacing, or building a custom electric bicycle, the X813-AB21C-12 provides consistent power, strong torque, and dependable performance for all your riding needs.