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iRobot Roomba XLife Extended Life Battery RSP800, original
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iRobot XLife Extended Life Battery For Roomba 600, 700, 800 Scooba400 Open Box 5060359280008 | eBay
Replacement 14.4v 9000mAh XLife Extended Battery For IRobot Roomba 500 600 700 800 Series IRobots Vacuum Cleaner|Replacement Batteries| - AliExpress
Amazon.com: iRobot Roomba Authentic Replacement Parts - XLife Extended Life Battery - Compatible with Roomba 400 600 700 800 Series Robots : Home & Kitchen