Tenergy 3500mAh Replacement Battery for iRobot Roomba 500 Series Tenergy battery is compatible with iRobot Roomba 500 Series as well as some of the models of 600, 700, 800, and 900 series. It is a Nickel Metal Hydride battery. It has a voltage capacity of 14.4V. It is considered to be an ideal replacement battery for the Roomba FloorVac models due to its high capacity of 3500mAh. The battery is very easy to connect with the vacuum cleaner. It is very easy to charge. There are several features to protect the battery and the vacuum cleaners against the issues of internal overheating and overcurrent. The battery works with maximum efficiency to make the Roomba work like new again. This battery enables your vacuum cleaner to work for a longer time in a single charge. The replacement of the battery is very easy, and there is no requirement of any modification tools. The dimensions of the battery are 5.7 x 2.2 x 2.5 inches, and it weighs 640 grams. It provides a long-lasting battery to the vacuum cleaner. It is also compatible with some of the Discovery Vacuum and Dirt Dog Vacuum cleaners. Battery typeNi-MH Capacity3500 mAh Model Series500 Compatible Models510, 530, 531, 532, 533, 535, 536, 540, 545, 550, 552, 560, 562, 570, 580, 595, 600, 620, 630, 650, 660, 700, 760, 770, 780, 790, 800, 870, 880, 980 View On Amazon Category Batteries for iRobot Roomba