Dimension: 184*68*108cm Motor power: 500W Battery: 48V, 20Ah` Brake: Disc for front wheel; Drum brake for rear wheel Tire size: 10"x3.5 Max speed: 45km/h Loading: 160kg Charging time: 4-8hours Range per charge: 50-60km Climbing ability: 15degree Quantity: 28pcs/20GP; 56pcs/40GP.