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Amazon.com: Synergy Digital Vacuum Cleaner Battery, Works with iRobot Roomba 531 Vacuum Cleaner, (Ni-MH, 14.4, 2800mAh) Ultra High Capacity Battery : Home & Kitchen
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HQRP 3300mAh APS Battery for iROBOT Roomba 531 / 533 / 536 / 537 / 551 / 561 / 563 / 564 / 571 / 577 / 578 / 600 / 611 / 790; 800 / 880 Series [Vacuum Cleaning Robot] Replacement plus HQRP Coaster
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Heavy Duty Li-Ion Battery for iRobot Roomba 510 530 531 532 535 536 540 550 552 560 562 570 580 595 - Walmart.com
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Battery for iRobot Roomba 531 14.4 V 4500 mAh Ni-MH APS See compatible series in the description below : Amazon.com.be: Home & Kitchen
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Amazon.com: FirstPower 5.0Ah 14.4V Compatible with Roomba Battery Replacement R3 Battery 500 600 700 800 900 Series 510 530 531 532 535 536 540 550 552 560 570 580 595 620 650 660 760 770 780 790 800 870 : Home & Kitchen
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