Apple's iPad 4 charges quicker than previous iPads courtesy of its new power adapter.
Those two extra watts may not sound like much, but they'll trim a good 30 to 45 minutes off the charge time, according to IGM.
Unfortunately, owners of previous iPads and the iPhone are out of luck. Though the new power adapter is compatible with older units, it won't provide more in the way of watts, so the charge time remains the same.
The 12-watt adapter is included with the iPad 4 and is available separately from Apple for $19.