Lately I have been experiencing a 1% drop in battery life about every 3-4 hours, and sometimes it is more - when I am not using it. I simply check the meter every few hours and it is lower. Overnight, I will lose 3-4% depending on where in the house I store it. This is starting to concern me because it seems like a recent development, when I first got the iPad I could leave it untouched for a day or two and no battery loss would happen (I didn't have a case yet so I wasn't bringing it outside the house). Has anyone experienced this? I am really fustrated because this is my second iPad, my first had wifi issues (which the new one solved) but it has these battery issues which the first one didn't. Thanks in advance.