48V 350W motor system, with 4 x 12Ah lead-acid batteries, controller protects at 42V low voltage and 17A over-current. Charging Method is non detachable type, 26km/h goes up to 30km/hr, 45km range e-bike. Power consumption of 1.2kwh per 100km, total weight of 53kg, Length x Width x Height (mm):* 1560 x 685 x 1070.