Roomba i7 Teardown: Why is there a waving cat with a lint roller inside?
iRobot Roomba® i7+ (7550) Wi-Fi® Connected Self-Emptying Robot Vacuum, Smart Mapping, Works with Google Home, Ideal for Pet Hair, Carpets, Hard Floors - Walmart.com
How to Replace the Battery in the iRobot Roomba i7 / i7+ - YouTube
Amazon.com: iRobot Roomba Authentic Replacement Parts - Lithium Ion Battery for Roomba® e & i Series Robot Vacuums : Home & Kitchen
Battery Replacement IROBOT Roomba i7+, How To - HardReset.info