Replacement Battery for Roomba 500 600 700 Series APS Battery 555 595 620 630 650 660 790" - Walmart.com
3300mAh New Battery For iRobot Roomba 850 860 880 890 960 965 970 980 981 985 | eBay
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Roomba 900 Series Original Battery (Lithium 3300mAh)
How to maximize your Roomba's battery life - CNET
iRobot Roomba 610 Professional Series Battery
Amazon.com: iRobot Roomba Authentic Replacement Parts - Lithium Ion Battery for Roomba® e & i Series Robot Vacuums : Home & Kitchen