iRobot Roomba Battery for Select 500, 600, and 700 Series - iFixit Store
Amazon.com: efluky 3500mAh Ni-MH Replacement Roomba Battery + Replacement Accessory Part Kit for iRobot Roomba 700 Series 700 760 770 780 790 - a Set of 14 : Home & Kitchen
iRobot Roomba Lithium Battery - 700 Series :: iRobot Roomba 700 Series :: Robotics Corp Limited