Vehicle, Mobility and Transportation Design CRF-E2 Electric Dirtbike by GREENGER ELECTRIC TECHNOLOGY LLC As a light-weighted field utility scooter for teenagers, it outshines conventional gasoline off-road vehicles in security and lightness. Its whole weight is 48 kg, and the battery module weighs 6 kg, which can be replaced in two minutes. Its three-gear speed mode and complex gear shift structure avoid misoperation and enhance driving safety, facilitating the acquisition of driving skills.