after reading people's posts... I'm confused at how you get such good batterylife. If I put my surface beside me, with nothing running on it and the screen timed out, it will be dead in about 1.5-2.5hrs max. this is from this morning when it was just sitting beside me at my work not really doing anything: 09:05:15 Active Battery 100 % 40,589 mWh 11:21:32 Active AC 10 % 4,248 mWh I just got this SP2 (my 3rd one) cause after a few months, the max battery I will get out of it is 1.5hrs. I wish I got 5hrs out of it... 6 is unheard of for me even with the power cover.