Cameron Sino 4000mah Battery For Irobot Roomba 614,615,640,652,665,670,671,675,677,680,681,685,690,691,695,696,801,805,850,860 - Digital Batteries - AliExpress
Amazon.com: 1800LI Replacement Parts Battery for iRobot Roomba 985/980/960/600/700/800 Series Robots 614/615/640/652/665/670/671/675/677/680/685/690/695/790/780/770/760/700/801/805/850/860/877/890/891/895 : Home & Kitchen
iRobot Roomba 640 Robot Vacuum Cleaner
iRobot Roomba j7+ (7550) Wi-Fi Connected Robot Vacuum with Automatic Dirt Disposal Graphite j755020 - Best Buy