Amazon.com: for iRobot Roomba e and i Series,e e5 e6 e5150 e5152 e6198 and i i3 3150 i3+ 3550 i4 4150 i4+ 4552 i6 i7 i7158 i7+ j7 7150 7550 i8 i8+,
Amazon.com: iRobot Roomba Authentic Replacement Parts – 3300 Lithium Ion Battery - Compatible with 900 and Select 600 & 800 Series : Home & Kitchen
Amazon.com: iRobot Roomba Authentic Replacement Parts - XLife Extended Life Battery - Compatible with Roomba 400 600 700 800 Series Robots : Home & Kitchen