It is a Ni-MH type of battery. It is a 14.4V battery. The capacity of the battery can be upgraded up to 3800mAh. This much capacity is enough for the iRobot Roomba 500 Series vacuum cleaners to clean the entire house. It is a brand new product for replacement, and it works efficiently as the original parts of the machine. It is very easy to charge and connect the APS battery.
The battery possesses safeguarding features against over current, over-discharge, protection against short circuit, overcharging, and steady voltage circuit. This helps in prolonging the battery life of the battery. The batteries have been designed in such a manner to give maximum efficiency for the vacuum cleaner. The battery possesses a feature that will notify the user when the battery is full so that it can be removed from charging for use. There are several cases where people face issues with the battery being swollen due to overcharging. This does not happen with this battery. The dimensions of the battery are 6.1 x 2.8 x 2.6 inches, and it weighs 1.57 pounds. The battery is also compatible with some of the models of 600, 700, 800, and 900 series floor vac models.