the only setting I changed to improve battery life is always on mobile data, gmail checks at defaults, Tweetdeck updates every hour, weather updates every hour.
Last charge was 2 days 7 hours. BUT, since I was off work it was mostly at home on wifi, and since I just got my acer iconia, it basically sat ignored, except for some calls, some texts and notifications.
sitting idle at my house battery loss is between 2-3 % per hour. out in the field, it appears to be about 3-4% per hour. Considerably better than my evo, which was 3-4 at the house, and 5-7 out and about.
I also have a lot less apps on this so far, I have only been installing things that I had on my evo 4g when I finally have need of them on the 3d.