I have tried changing power cables and nothing seems to work. Any tips would be great! Thanks
Try a reset. Sometimes that can work wonders - sometimes. But it is worth a shot. The instructions are at the bottom of my post. This ASC discussion site just will not work perfectly with any iOS browser - and frankly, that is sad ...... But that is a different story. I could not paste the instructions here so see the bottom of the post first.
Other than restoring your iPad to factory settings and then restoring from a backup, there probably is nothing else that you can do. If you know for sure that the charge and the cable are not the problem - that only leaves the iPad as where the problem must lie.
If you restore and the battery will still not charge - well I would have to assume that your battery has gone bad. Contact Apple if that is the case. You have a one year warranty on the iPad and that includes the battery.
Reset the iPad by holding down on the sleep and home buttons at the same time for about 10-15 seconds until the Apple Logo appears - ignore the red slider - let go of the buttons.