Amazon.com: NASTIMA 14.8V 5000mAh Lithium ion Replacement Battery Compatible with iRobot Roomba 960/895/890/860/695/680/690/675/640/614, Replace The Original 1800mAh Lithium ion Battery : Home & Kitchen
Amazon.com: 14.4V 4.5Ah Replacement Battery for Roomba Compatible with Roomba Battery R3 500 600 700 800 900 Series 500 510 531 535 540 550 552 560 570 580 595 620 650 660 700 760 770 780 790 800 900 with brush : Home & Kitchen
Amazon.co.jp: (Genuine Product) 4650994 iRobot Lithium-Ion Battery, Compatible with Roomba S9+ : Home & Kitchen
Amazon.co.jp: [Genuine Product] iRobot Roomba Lithium Ion Battery and 800,900 Series Compatible Filters (2 Pieces) Set (Compatible with 800/900 Series) : Home & Kitchen
Amazon.com: GUSHINE 3500mAh NiMH Battery for iRobot Roomba R3 500, 600, 700 & 800 Series, 3.5Ah 14.4V Advanced Power System (APS) Battery Replacement 500 550 630 650 770 780 880 and More : Home & Kitchen
Amazon.co.jp: 5bt_ao battery for roomba sold by a Japanese company, 2 times the long life, 2.5 hours of operation, compatible with Roomba 500, 600, 700, 800 series : Home & Kitchen