I recently came into possession of a Samsung usb charger. This charger has double the power output of the standard apple one (5Vx2A instead of 1A). Of course, it would be nice to decrease the charging time of my iPad (3rd gen) with this adapter. Since I don't have the equipment to measure the power consumption of an iPad during charging I can't produce reliable data on this issue.
I was wondering if somebody ever studied the charging times of mobile apple devices (most notably the iPad) with third-party chargers and could share some data (like power consumption, charging times, …) on it.
Best Answer
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