BLACK+DECKER BDH2000PL MAX Lithium Pivot Vacuum, 20-volt Lithium Technology for strong suction and fade free power Exclusive pivoting nozzle means huge power in a compact size. Suction Power : 35 AW. Weight is 3.0 pounds A high performance motor provides superior suction capability. Wide mouth design scoops up large debris The cyclonic action spins dust and debris away from the filter keeping suction power strong;Charge Duration:4 hours 3-stage filtration system. Charge only at ambient temperatures between 50F and 104F