iPad stuck on red battery
I was using my ipad today just normally but suddenly it turned off at 9% of battery left. After that it normally rebooted but got stuck in red battery screen. I have been trying to charge it, enter DFU do anything but it just shuts down right after "Slide to Unlock" pops up. After that it is back in red battery. I have been trying to charge it on two computers now and nothing seems to help.
Could this be a hardware problem or is there a solution for this?
iOS 4.2.1
iPad 1 32GB 3G, iOS 4