After upgrading to iOS 6 - I noticed that they have added battery usage to the general section in the settings app. My battery seems to be draining a bit quicker on iOS six. Last night, I charge my iPad to a 100% and then unplugged it and let it sit there all night. When I woke up, the battery was at 94% even though it had not been used. I check to the usage section and this is what I saw, over four hours of usage even thoughnthe iPad was doing nothing. How is this possible?