The Tenergy Replacement Battery is compatible with all the models of iRobot Roomba 400 Series. It has a good capacity of 3300mAh, and it works very well as a rechargeable battery for iRobot Roomba 400 Series. It is a 14.4V battery. The battery is very easy to charge, and it connects compatible with Roomba FloorVac models that have APS battery.
The Ni-MH battery for the iRobot Roomba protects the vacuum cleaner against the issues of internal overheating and overcurrent. It has a No Memory Effect due to which you can charge the iRobot Roomba batteries anytime. It can be charged when it is partially drained or close to full, and still, it will work with maximum efficiency, and you can use it till full capacity. It provides with long-lasting power to the vacuum cleaner. Tenergy batteries can be replaced directly from the iRobot Roomba 400 Series vacuum cleaners without any kind of inconvenience. Tenergy battery works efficiently, and it is a great replacement battery for iRobot Roomba 400 Series. The dimensions of the battery are 7 x 2.2 x 2.3 inches while it weighs 794 grams.