Roby Wheelchair Stair Climber Home Elevator Lift, Specs: 1)285 lb / 130 kg capacity 2)Battery charger power supply; 115 VAC3)102 lb / 46 kg total weight,80 lb / 36 kg drive unit including batteries, 22 lb / 10 kg steering bar4)Travel speed; 16’ per minute / 5 m per minute ascend or descend, loaded or unloaded 5)ABS control panel on steering bar with battery charge indicator, slope indicator, emergency stop button and operators key 6)Maximum stair angle; 35°