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iRobot Roomba 531 - ROBOTIC VACUUM CLEANER - w/dock, tested good [0131210516] - $45.00 : EdsGoodStuff, it's all good
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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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