I reallly don't know how truthful those who say their battery last more than 2 months. You can use the most high tech battery and still for something like a mouse, it drains energy like crazy even in power saver mode. I have used A4 Tech, Microsoft, even Logitech wireless ones and the average lifespan on batteries on the mouse is 1-2 months. The lifespan of battery for the keyboard does exceed 10 months to a year though. Even the DELL notebook bluetooth mouse doesn't fare more than a month.

Nowdays i use A4 tech that have a rechargable docking station that is wired to the PC so i don't have to worry about replacing the batteries. RM 145 in combo keyboard & mouse package.

Unfortunately, i do not think having the claimed longest lasting battery would contribute in extending the mouse battery life expectancy. Cables are still the best.

This post has been edited by netmatrix: Sep 20 2009, 12:00 AM