The most common system for powering wireless mouses is through disposable batteries. The most common size of this battery is AA or AAA and each wireless mouse normally uses only one or two batteries. These batteries tend to last a long time in wireless mouses and while not necessarily the best environmental choice, they are quite economical.
Another power system used by wireless mouses is an internal, rechargeable battery. Using this method, the mouse is charged by connecting it through a cable, usually a USB cable, to the computer or other power source. Some models allow the use of the mouse while charging, although usually the mouse will not operate while recharging.
There is another power option, but it is usually a little more costly than the other two types we have discussed. These wireless mouses do not include a battery and are powered by induction when placed on top of a mousepad base. Of course, the movement that the mouse can make is limited to the dimensions of the base.