Voltage:14.4V Capacity:3500mAh Dimension:185*55*66mm Weight:0.7KG Battery Type:Ni-MH Fit for:iRobot 500, 510, 530, 531, 532, 533, 535, 536, 537, 550, 551, 560, 561, 562, 563, 564, 570, 571, 577, 578, 580, 600, 610, 611, 630, 700, 760, 770, 780, 790 OEM is welcome