15 lbs, it is compact, comfortable, and the lightest unit on the market. Adjustable back support, waist and shoulder straps are designed to minimize operator fatigue. Cordless eliminates accidents, such as tripping commonly associated with power cords. 45 minute run time with consistent power throughout the entire discharge. 1.5 gal tank offers plenty of capacity. 36 volt lithium ion battery charges in 2.5 hours.