MELASTA New Version 4600mAh 14.4V Ni-NH Replacement Battery for iRobot Roomba R3 500, 600, 700 & 800 series 510 530 531 532 540 550 570 580 585 610 620 650 660 760 770 780 790 870 880 R3 4419696 Battery Type:Ni-MH / Voltage:14.4V / Capacity:4600mAh Fully charge before use (at least 12 hours).Higher Capacity 4600mAh,Provides a ultra-long running time up to 3 hours for Roomba vacuum cleaning robots Easy install and fits perfectly for all iRobot Roomba 500&600&700&800 series.such as iRobot Roomba 595 561 550 530 560 551 650 614 620 655 670 675 770 761 780 710 880 805 860 870 890 ect Built-in NTC to prevent battery from over temperature,low Impedance to reduce energy loss by battery itself 35- DAY return policy and 1 Year warranty.up to to RoHS, CE certified.