Complete bike Package size 1740mm?090mm?75mm Wheel base 1280mm Max load 75kg Max speed ≥45km/h Range ≥60km Electric consumption per 62 miles(per100km) ≤1.8kw.h Battery Type Fully sealed free maintenance lead-acid Capacity 20Ah Standards voltage 12V? Motor Type Drum, brushless Rated output power 500w ( 1000W is optional) Torque 12N.m Efficiency ﹥82% Controller Insufficient voltage protection value point 42±1V Over current protection value point 27±1A Charger Input \ output voltage AC 220V\DC59V or AC 110V\DC 59V