EXMATE 14.4V 4.8mAh BLUE BATTERY FOR iROBOT ROOMBA 4800mAh high capacity and more than 500 charging cycles make you do not worry about hard work, provide much more energy than originals in one full charge, super efficiency. FCC, CE and RoHS certification, each battery has passed abnormal voltage, short circuit, internal overheating, over-charge and over-discharge test, safety insurance. Eco-friendly Ni-MH batteries inside, Ni-MH battery does not contain Pb / Hg / Cd, does not pollute the environment and is convenient to use, unlike Ni-Cd battery which contains a Cd element that can pollute the environment. No memory effect, the battery can be charged or discharged as needed without loss of capacity, Ni-MH battery has no memory effect that is not like Ni-Cd battery, so no need to charge it to full or full discharge in use, much more convenient . Ni-MH rechargeable battery is well compatible with tools such as original Ni-Cd rechargeable battery, and can be charged with original Ni-Cd or Ni-MH charger, we made Ni-MH cell batteries enjoy high capacity, longer life, no memory effect and no pollution, feel free to use Ni-MH battery, which is much better than Ni-Cd ones. Compatible with: iRobot Roomba 500 510 530 534 535 540 550 560 562 570 580 600 610 700 760 770 780 800 R3.