This Lorex Acbatt3 3-cell accessory power pack is designed to easily snap in and out of the base of Lorex wire-free cameras like the Lwb4800, Lwb4900, Lwb5800 and Lw6800. This allows you to remove and replace the power pack without taking your camera down from the mount. As the power pack charges, a convenient LED on the side of the power pack will turn from red to green when the battery is full. The power pack is also designed to automatically stop charging when it is fully charged so you don't have to worry about damaging or overcharging it. The battery life of this 3 cell power pack is dependent on how often the security camera turns on. This means that the battery life will be significantly less if the camera is in a high traffic area Full of motion activity or much longer if it is in a very low traffic area. The period of time that the camera remains recording after the camera senses motion will also impact how long a Lorex replacement Power pack will last. Typically this 3-cell pack will last 5 months before it needs to be recharged.