This helpful article solved the problem for me: http://www.droid-life.com/2012/12/27/fix-nexus-7-refusing-to-charge-try-this-trick/ I had this issue with several N7's. One of them had it's battery replaced by Asus. But the fix described in the article is a bit easier (even though I don't think it completely solves the problem). Allan
I was about to send one of my N7's in for repair, when I decided to try to turn it on for the very last time. It suddenly worked again! The other N7 I sent for repair had it's battery replaced. I'm starting to get very worried about the stability of these N7's. Seems like there is a battery issue with some of these devices.