I just found a nice T91 Battery Eater Classic Test on youtube. So CPU constantly at 100%, display 100%, wifi on. It is 4hrs and 2minutes. That´s cool. Not that I think, that i need this setup, but it also shows, that with not much cpu use, display on 40% and maybe wifi of, the T91 my reach 5 1/2hrs. I have to test it, an maybe make a battery eater test myself. The t91 in the vid runs xp, interesting would also be how long will it last under Windows 7. Perhaps less because of insufficent drivers yet?