Rechargeable battery. Dimensions: 9.0 (H) x 7.0 (W) x 8.0 (D) Weight: 6.3 lbs. with Battery; 3.8 lbs without Battery. Vacuum Range: 80-550 mm Hg. Flow Range: 27 LPM Free Flow Unrestricted. Electrical Requirements: 100-240 V AC 50/60 Hz .75 A max; 12 V DC 33 W max. Warranty 2 years: Limited on Unit.