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, letting you enjoy a longer-lasting ride. Get the Fat 20 48V, and enjoy a better life with ECOTRIC!