I can only speak from what I have experienced. I use a 2A Apple iPad charger as my primary charger at bed side for every device I own that uses some version of a USB cable (off the top of my head, a Sony PS Vita, iPad mini, iPhone 5s, Kindle, Nike Fuel Band, a Mophie Case, and a battery pack), and obviously some of my devices are designed for 1A charging. My understanding is that the output of the USB wall plug is what it can put out at max, but a USB device will only take what it can use.
12-31-2013 02:46 AM