What's wrong with my wireless mouse I use with my laptop? I've got an ordinary Microsoft wireless mouse, bought about six months ago. The problem is that the battery lasts only for a month or so. Aren't the batteries supposed to last for many months instead of just one? I don't really think it has something to do with the mouse itself, as I have had this exactly same thing happening with a mouse from a different manufacturer. Does this happen with any of you?