iRobot Roomba Authentic Replacement Parts - XLife Extended Life Battery - Compatible with Roomba 400 600 700 800 Series Robots : Home & Kitchen - Amazon.com
14.4V 6400mAh Upgrade Lithium Ion Battery to be Compatible for Roomba 600 700 800 500 890 880 870 860 790 780 series battery - AliExpress
Amazon.com: HT TopHinon 2200mAh 7.2V NiMH Replacement Battery Compatible with iRobot Braava 380, Braava 380T, Braava 390T, Mint Plus 5200, 5200C Vacuum Cleaner : Home & Kitchen
Roomba 900 Series Original Battery (Lithium)
Amazon.com: iRobot Roomba Authentic Replacement Parts - XLife Extended Life Battery - Compatible with Roomba 400 600 700 800 Series Robots : Home & Kitchen