Powerextra 2 Pack 7.2V 3000mAh Ni-MH iRobot Mint 5200 Vacuum Cleaner Replacement Battery For iRobot Mint 5200B Battery Voltage:7.2V Capacity:3000mAh Battery Type:Ni-MH High capacity Long Lasting battery for your iRobot Vacuum Cleaner Battery Replacement for iRobot 5200B Powerextra&trade;products are CE certified, tested by manufacturer to match OEM products. 30 Days Money back and 1 year warranty