Turn off that battery percentage. There is already enough info out that says the % is not accurate. There was an article that said the iPad 3 charges up to an hour after the indicator says 100%.
These posters are right. Turn off the % and enjoy your iPad. That said I've been browsing, emailing, posting, and watching videos for 30 mins and I'm still at 100% but my iPad 3 has been on the charger all morning. So 8% an hour says someone ain't right.
I think you mean something, and as it turn out it was indeed wrong, as they replaced his iPad...