Amazon.com: VI VINTRONS Battery Replacement Compatible for IROBOT Roomba 614, Roomba 615, Roomba 640, Roomba 652, : Home & Kitchen
Cameron Sino 5200mah Battery For Irobot Roomba 614, 615, 640,652,665,670,671,675,677,680,681,671,675,677,680,681,685,690,691,695 - Digital Batteries - AliExpress