So decided to run a battery test comparing web browsing vs movie watching. The settings were push, fetch, location services all turned to off. Brightness about 40% and wifi always on. In my previous safari only test I got roughly 10 1/2 hours of safari only usage. Yesterday decided to load up a blu-Ray digital copy of dark knight. I had the battery at 52% and I let the movie play 2x in a row. That's 5 hours straight of movie playing (cut out a few minutes of credits to get even 5 hours). At the end of this the battery was at 13%. So within the 5 hours it drained 39%. That's 19.5% every 2 1/2 hours of movie. Which in turns out to be roughly 13-13 1/2 hours of continuous movie playing. So it turns out web browsing and just simply playing around on the ipad drains it faster. Next test is a full gaming test.