iPad's charging math is wrong!

According to researchers, the new iPad still has to charge an extra 2 hours and 10 minutes after the battery says 100%. Due to bad math the charging rate is completely off, and for those of which who are not aware of this and have an iPad they are not getting the full battery usage out of their batteries.

http://news.cnet.com/8301-27076_3-57403359-248/researcher-says-new-ipads-charging-math-is-wrong/