Please post your model or SB with your battery life. I have the higher end version and would like to know if there's a difference in battery between it and the less powerful SBs, or if my unit just sucks.
I get about 5-6 hours with battery saver on, 50% brightness, with 4-5 programs open.
Once at a conference I had Wifi off, location off, bluetooth off, 20% brightness, and I could have gotten about 8.5 hours, which is still not close to what was advertised.