?About us: With more than 12 years of production and design experience, TREE.NB Promise the Quality for Customer. Buy with confidence! Direct from Manufacturer. High performance. Affordable price! ?Specifications: Name: Battery Replacement for iRobot Roomba Chemistry: Ni-MH Model No.: Replacement for iRobot Roomba 400 NI-MH 14.4V 4000mAh Condition: Brand new Sub-Type: Replacement Battery Capacity: 4000mAh/4.0Ah Voltage (V): 14.4V Wattage: 57.6W Item Weight: 576g ?Some more details about Ni-MH technology: Environmentally, no pollution, no memory effect, longer service life. High capacity can reach more than 4000mAh ,much more powerful than originals. ?Compatible with below Models: Replacement for iRobot Discovery Series Replacement for iRobot Dirt Dog Models Replacement for iRobot Create Models Replacement for iRobot Roomba FloorVac 400 Series Models ?Compatible with iRobot Roomba 400 Series:(Please search with "Ctrl +F") Replacement for iRobot Roomba 4000 Replacement for iRobot Roomba 4100 Replacement for iRobot Roomba 4105 Replacement for iRobot Roomba 4110 Replacement for iRobot Roomba 4130 Replacement for iRobot Roomba 4150 Replacement for iRobot Roomba 4170 Replacement for iRobot Roomba 4188 Replacement for iRobot Roomba 4210 Replacement for iRobot Roomba 4220 Replacement for iRobot Roomba 4225 Replacement for iRobot Roomba 4230 Replacement for iRobot Roomba 4232 Replacement for iRobot Roomba 4250 Replacement for iRobot Roomba 4260 Replacement for iRobot Roomba 4296 Replacement for iRobot Roomba 400 Replacement for iRobot Roomba 405 Replacement for iRobot Roomba 410 Replacement for iRobot Roomba 415 Replacement for iRobot Roomba 416 Replacement for iRobot Roomba 418 ?Package Included: 1*pcs 4.0Ah NI-MH Battery Replacement for iRobot Roomba Vacuum Cleaner