Can an iPad be charged faster with a third party power adapter?
The standard iPad charger is 2.1Amp at 5V. The 1amp is for iPhone and charges slowly, or not at all if you're using it at the same time.

The 2Amp one will charge it much faster. Works very well with iPhones too.

http://gizmodo.com/5535631/the-fastest-and-slowest-way-to-charge-an-ipad