The 2.1 A charger came with the iPad. It says AC as well. (I'm not talking about a car charger here) I'm sure you can just buy one at apple store but my experience is that it doesn't solve me problem.
Here is the first car charger I tried: http://www.monoprice.com/products/pr...seq=1&format=2
It said AC charging as well. I didn't short anything out.
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