Amazon.com: Synergy Digital Vacuum Cleaner Battery, Works with iRobot Scooba 450 Vacuum Cleaner, (Ni-MH, 14.4, 2800mAh) Ultra High Capacity Battery : Home & Kitchen
Amazon.com: iRobot Roomba Authentic Replacement Parts - XLife Extended Life Battery - Compatible with Roomba 400 600 700 800 Series Robots : Home & Kitchen