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Amazon.com: Upgraded 5.2Ah Ni-MH Battery Compatible with iRobot Roomba 14.4V R3 500 600 700 800 900 Series Robot Vacuum 510 530 531532 535 536 540 550 552 560 570 580 595 600 620 650 660 700 760 770 780 790 800 8 : Home & Kitchen
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Amazon.com: Areotek 4500mAh Extended Life iRobot Roomba Replacement Battery for 500 600 700 800 Series Robots : Home & Kitchen
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