Amazon.com: 4000mAh / 57.60Wh Li-ion Replacement Battery for iRobot Roomba 670, Roomba 671, Roomba 675, Roomba 677, Roomba 680 Part NO iRobot 2130LI, 4374392, 4376392, 4462425, 4502233 : Home & Kitchen
Amazon.com: iRobot Roomba Authentic Replacement Parts - XLife Extended Life Battery - Compatible with Roomba 400 600 700 800 Series Robots : Home & Kitchen
Amazon.com - iRobot Roomba Authentic Replacement Parts - Roomba 1800 Lithium Ion Battery - Compatible with Roomba 960 895 890 860 695 680 690 675 640 614 -
How to Replace Roomba I3 Battery: Step-by-Step Guide w/ Photos