Amazon.com: NASTIMA 14.4V 4400mAh Lithium ion Replacement Battery Compatible with iRobot Roomba 600 700 800 900 Series 614 615 675 680 690 694 760 780 790 805 880 890 895 960 980 985 : Home & Kitchen
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New ABL-B Replacement Sweeper Rechargeable Li-ion Battery for iRobot Roomba S9 9150 + S9+ 9550 Robot Vacuum Series 4INR19/65-2 14.4V 3300mAh/48WH - Walmart.com
MaximalPower Li-ion Replacement Battery for iRobot Roomba 500 600 700 800 Series (4500mAh Capacity) - Walmart.com