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
Amazon.com: ANTRobut 4500mAh 14.4V NI-MH Replace Battery for iRobot Roomba R3 500 600 700 800 900 Series Robot Vacuum Cleaner (with roomba Replacement Parts) : Home & Kitchen
Amazon.com: Neutop Replacement Parts Accessories Filters Brushes Compatible with iRobot Roomba 500 Series 555 560 561 562 570 581 and Other Models with Green or Red Cleaning Head. : Home & Kitchen
Amazon.com - iRobot Roomba Authentic Replacement Parts - Roomba 1800 Lithium Ion Battery - Compatible with Roomba 960 895 890 860 695 680 690 675 640 614
Amazon.com: iRobot Roomba Authentic Replacement Parts - XLife Extended Life Battery - Compatible with Roomba 400 600 700 800 Series Robots : Home & Kitchen