The Fat 20 48V is a comprehensive upgrade of the Fat 20 36V in an entire power system. Overall upgrade from three aspects - display, gears, and battery. First of all, the S900 smart LCD is the most intuitive change. Much information, such as current speed, remaining battery, and mileage, will be displayed in real-time so that you can clearly understand the current status of your ride. Secondly, the pedal assists and throttle of Fat 20" 48V have five-speed modes to choose from, which meets the diverse needs for speed. Finally, we also upgrade the battery from 12 Ah to 12.5 Ah, let you enjoy a longer-lasting ride. Get the Fat 20 48V, enjoy a better life with ECOTRIC!