Original Battery 14.4v 2130mah For Irobot Roomba Battery Roomba 500 600 700 800 Series Vacuum Cleaner Irobot Roomba 620 770 580 - Vacuum Cleaner Parts - AliExpress
Amazon.com: 1800LI Battery for iRobot Roomba 985/980/960/600/800 Series Robots 600/614/615/620/640/652/660/665/670/671/675/677/680/685/690/695/760/770/780/790/800/801/805/850/860/877/890/891/895/896/960/965/980 : Home & Kitchen
Amazon.co.jp: iRobot Compatible Portable Battery 3000mAh 14.4V iRobot Ni-MH Battery Replacement for iRobot Roomba 535 570 653 870 536 580 654 880 540 581 655 545 585 660 Pet Series Ni-MH Battery Compatible Battery : Home & Kitchen
Heavy Duty Li-Ion Battery for iRobot Roomba 650 651 653 654 655 660 676 691 694 699 - Walmart.com