PANGOOD's PDS9K side-hung electric drive assembly for hub two-wheelers adopts a wheel-side drive form. It is only the size of an ordinary adult male's palm, with a total system weight of 12kg, integrating small size, light weight and high efficiency. Compared with the central motor, the battery and storage space are increased by more than 30%. At the same time, it can realize the recovery and power generation of the vehicle's surplus kinetic energy, with the energy recovery efficiency increased by 108% and the battery life increased by 15% year-on-year.