After long last, I think my ipad is a goner. It's acting very, very strange.
I've never had a battery life issue. Yeah, it doesn't last as long as it used to, but I have had my ipad since it came out, and recently, it's main use has been to watch movies and game. Recently, it started having issues charging. I chalked it up to my power cord being a bit faulty and old, but the charger will charge other devices(such as my iphone 4 and my mother's Ipad2) just fine. I even tried plugging it into a new wall charger for the ipad, and it doesn't recognize that's its being charged. No beep, no lightning bolt, no "not charging" message, no nothing. So it's not my cord(s).
I then reset my software. First, using a cloud backup, and then, reset it as a new device to factory condition.
Here's where it gets odd. When it's plugged in the battery percentage does go up, but slow enough I didn't notice at first. It goes up even faster if I turn it off. Right now, I'm going to try to get it to a high charge by leaving it alone for a few hours, and see if that resolves the issue. I have heard report of this problem on forums such as this one, that simply not letting it get that low will make the problem dissapear. I also found an old thread on this forum that had a reported fix involving screws on the charging port's internal part.
All the techs I've spoken to want a very hefty fee for even speaking to them or looking at it, and if it's such a common problem with an easy fix, I'd rather do the DIY or work-around.