I have an Apple iPad 3 32Gb WiFi running IOS7 plus updates.
The issue is that when I plug the Mains charger in the iPad reports "Not Charging" in the top right corner.the is no zigzag lightening symbol to indicate charging is in progress.
If I leave the iPad for a few hours it does indeed charge.
I never had this problem prior to upgrading to IOS7 recently.
I have also tried 3 different chargers and 3 different cables