ABL-D1 i7 Battery for iRobot Roomba e series i series e5 e6 i7 i7+ i8 7150 7550 5150 e5150 e515020 e5152 - AliExpress
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