I've actually never ran mine below 25%, working on doing it today so I can charge it over night tonight.
This is a discussion on Tips on draining ipad battery? within the iPad General Discussions forums, part of the Apple iPad Discussions category; I've actually never ran mine below 25%, working on doing it today so I can charge it over night tonight....
When I'm not working I dont charge...since I dont need it to last all day...and I can get about 4-5 days before it shuts down.
In my experiments, it seems to be multitasking apps left running that is running my battery down. If I leave (for example), email running, or OTR Streamer to just "time out" and do not shut off multitasking manually when I exit, then I get much shorter battery charge life. Just letting the iPad time out to a dark screen no longer insures iPad being off. Now I must press the little black power button to be sure iPad is powered off. Then the excess battery drain does not happen.