MIGHTY MAX BATTERY 14.4-Volt NICD 2000 MAH Replacement Battery for Roomba 500 Series ML-RMB500 - The Home Depot
How To Remove Battery | Roomba® 700 series | iRobot® - YouTube
Battery 11702 for iRobot Roomba 500 630 - Green Cell
Amazon.com: iRobot Roomba Authentic Replacement Parts - XLife Extended Life Battery - Compatible with Roomba 400 600 700 800 Series Robots : Home & Kitchen
Amazon.com: iRobot Roomba Authentic Replacement Parts - Lithium Ion Battery for Roomba® e & i Series Robot Vacuums : Home & Kitchen