It's sometimes a bit irritating when an alleged problem is highlighted and someone then points out how great their situation is, but gotta do it! Our iPad 2s have gotten over 20 hours after mainly reading and some Internet browsing and charging at 10 or 15 percent. How sweet is that...
We do keep apps closed so there's minimized battery drag. The iPad 2 is just a very pleasing device!
Since the problem user has given no information, perhaps trying a few things to extend battery time would help. Hopefully it's not a defective unit.