iRobot Advanced Power System Ni-MH Battery New 3000 mAh Nickel Metal Hydride battery keeps Roomba running at peak performance Cleans up to 4 rooms in 1 cleaning cycle Charges in 7 hours on standard charger (sold separately)For Roomba 500 Series only 7 x 2.2 x 2.3 inches; 3 pounds; made in ChinaNeed more information on this product? Click here to ask.
