Tenergy Replacement Battery for iRobot 400 series Roomba Brand new Battery Pack which is compatible with iRobot Roomba Advanced Power System (APS) Battery. This battery is fully compatible with all Roomba FloorVac models. NiMH battery, 3.3Ah Capacity, 14.4V Up to 100 minutes run-time Size: 179mm x 51mm x 52mm (7" x 2.2" x 2.3" inches)