Morpilot 3800mAh XLife Extended Life Replacement Battery 1000-Circles 14.4V Battery for Irobot Roomba 500/600/700/800/900 Series 500 510 530 531 570 580 595 600 620 630 650 660 700 760 770 780 790 3800mAh irobot replacement battery makes your roomba run longer, which it can runs well for 1.5 to 3 hours per charge Morpilot iRobot replacement battery compatible with models: 500/600/700/800/900 Series 510, 530, 531, 532, 533, 535, 536, 540, 545, 550, 551, 552, 560, 561, 562, 570, 580, 581, 585, 595, 600, 610, 620, 630, 650, 653, 654, 655, 660, 700, 760, 770, 780, 790, 800, 870, 880, R3, 80501 Life Saver, Money Saver! Save money by using a long-life battery (1000 cycle times, 1 long-life battery = 5 NiMH/ 10 NiCd batteries), 4x longer Life than iRobot batteries No Memory Effect+Low Rate Of Self-discharge, ultimate protection circuit design. Advanced Long-life technology provides improved energy density Morpilot Ni-MH irobot battery come with a 30-day money back and a 12-month limited seller's guarantee against manufacturer defects from date of purchase, and 24 hours' friendly customer service iRobot Roomba 510iRobot Roomba 551iRobot Roomba 600iRobot Roomba 760 iRobot Roomba 530   iRobot Roomba 552   iRobot Roomba 610iRobot Roomba 770 iRobot Roomba 531iRobot Roomba 560iRobot Roomba 620iRobot Roomba 780 iRobot Roomba 532iRobot Roomba 561iRobot Roomba 630iRobot Roomba 790 iRobot Roomba 533iRobot Roomba 562iRobot Roomba 650iRobot Roomba 800 iRobot Roomba 535iRobot Roomba 570iRobot Roomba 653iRobot Roomba 870 iRobot Roomba 536iRobot Roomba 580iRobot Roomba 654iRobot Roomba 880 iRobot Roomba 540iRobot Roomba 581iRobot Roomba 655iRobot Roomba R3 iRobot Roomba 545iRobot Roomba 585iRobot Roomba 660iRobot Roomba 80501 iRobot Roomba 550iRobot Roomba 595iRobot Roomba 700 iRobot Roomba Pet Series <span class="a-text-bold">ect.</span>