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Batteri, iRobot Roomba robotstøvsuger - bl.a. Roomba 500
iRobot Roomba 865: Battery Replacement - YouTube
Give new life to your devices: Newell battery replacements for speakers and vacuum cleaners - Newell Pro - Camera Batteries, Chargers, LED lights and more
Amazon.com - iRobot Roomba Authentic Replacement Parts - Roomba 1800 Lithium Ion Battery - Compatible with Roomba 960 895 890 860 695 680 690 675 640 614, Black