tx651p or the tx1 equivalent (without the cingular built in edge/gprs). when i first got the notebook the batter life was consistently around 5.5 + hours at half brightness with wifi and bluetooth on (but connected with one or the other) web browsing. but after 8 months of heavy use (this laptop is on for 14 hrs per day) the battery only lasts about 3.5 hours at those same settings.
so it is time to change my battery!
n.b. this laptop has the most stamina of any portable device EVER!!! my new nokia N80 lasts for about 3 hours when i am listening to mp3…what a joke…