Amazon.com: 14.4v NiCD Battery Replacement for iRobot Roomba 800, 870, 880 : Home & Kitchen
Lithium Battery Replacement for iRobot Roomba R9 Series
Amazon.com: iRobot Roomba Authentic Replacement Parts - XLife Extended Life Battery - Compatible with Roomba 400 600 700 800 Series Robots : Home & Kitchen
iRobot Roomba 800 battery
Amazon.com: 1800LI Replacement Parts Battery for iRobot Roomba 985/980/960/600/700/800 Series Robots 614/615/640/652/665/670/671/675/677/680/685/690/695/790/780/770/760/700/801/805/850/860/877/890/891/895 : Home & Kitchen
iRobot Roomba Series 500, 600, 700, 800, and R3 Battery
5.2Ah 14.8V Lithium Ion Battery for iRobot Roomba Cleaner 900 800 700 600 Series 960 980 981 965 895 890 860 695 692 690 680 675