Backpack Vacuum Vacuum Power Source Cordless Vacuum Filtration Type HEPA Filter Efficiency 99.97 Percent at 3 microns Vacuum Collection Type Disposable Bag Vacuum Capacity 1/2 gal Vacuum Pickup Type Dry Vacuum Air Flow 70 cfm Static Pressure 44 in Weight 9.9 lb Sound Level 69 dB Number of Motor Stages 2 Hose Dia 1 in Hose Length 3 ft Voltage 18 V Cordless Tool Battery Type Li-Ion Includes Battery Yes No Batteries Included 2 Battery Capacity 5 Ah Includes Charger Yes