iRobot Original Li-ion Battery 3300mAh/14.4V Roomba 680, 690, 890 and 900 Series
Mighty Max Battery NiCD Replacement for iRobot Roomba 563, 561, 551 Rechargeable Sealed Lead Acid Backup Power Batteries in the Device Replacement Batteries department at Lowes.com
Amazon.com: for iRobot Replacement Parts Roomba 1800LI Lithium Ion Battery Compatible with Roomba 960 895 890 860 695 680 690 675 640 614 Series 4376392 14.4V 26Wh 1800mAh : Home & Kitchen
Mighty Max Battery NiCD Replacement for iRobot Roomba 563, 561, 551 Rechargeable Sealed Lead Acid Backup Power Batteries in the Device Replacement Batteries department at Lowes.com
IRobot Roomba 600 Series Battery for 690, 640, 614 Vacuum, Replaces 45 – BBM Battery