Replacement battery for Vacuum. Specifications: 3300mAh, 14.4V, Nickel Metal Hydride (NIMH). Compatible with: Vacuum. Replaces: 4905, Create Models, Dirt Dog, Roomba 400, Roomba 4000, Roomba 405 and 40 more. Advanced Power Systems (APS) replacement battery designed for Vacuum devices. Perfect for professional or everyday use.