1 Product Specific batteries required. (included)

ZEYXINH 3000mAh 14.4V NI-Mh Replacement Battery Compatible with iRobot Roomba R3 500 600 700 800 Series 510 532 535 540 550 552 555 560 562 570 580 595 610 620 630 650 660 760 770 780 790 800 870 880