I have a Logitech wireless mouse, and the battery lasts for at least several months. I unplug it from the USB port on my computer every night and put it on the back of the mouse, which turns it off. If you leave it plugged in to the computer all the time, the mouse stays on even if you're not using it, and that decreases the life of the battery. I've had no trouble with my mouse.
Last edited by Lily H : 02-22-2012 at 10:06 AM.