3200mAh i7 Battery Replacement Compatible with iRobot Roomba e and i Series i7+ | eBay
Amazon.com - iRobot Roomba j7+ (7550) Self-Emptying Robot Vacuum – Avoids Common Obstacles Like Socks, Shoes, and Pet Waste, Empties Itself for 60 Days, Smart Mapping, Works with Alexa -