14.4V NiMH 3000mAh Roomba 400 Series Rebuild Service – MTO Battery
Replacement Battery for Roomba 500 600 700 Series APS Battery 555 595 620 630 650 660 790" - Walmart.com
Original Replacement Battery Abl-b For Irobot Roomba S9+ Geunine Rechargable Irobot Battery 3300mah - Mobile Phone Batteries - AliExpress
iRobot Roomba Series 500, 600, 700, 800, and R3 Battery
Amazon.com: iRobot Roomba Authentic Replacement Parts - XLife Extended Life Battery - Compatible with Roomba 400 600 700 800 Series Robots : Home & Kitchen