Refurbished: iRobot Roomba E6 Robot Vacuum - Wi-Fi Connected, Compatible with Alexa & Google, Ideal for Pet Hair, Carpets, Hard, Self-Charging Robotic Vacuum, Sand Dust (6198) - Newegg.com
Amazon.com: 14.4V 3200mAh i7 Battery Replacement for iRobot Roomba e and i Series, Large Capacity Battery Compatible with Roomba i7 i7+ i8 i6 i4 i4+ i3 i3+ i7158 J7 7150 7550 and