Is it safe charging a Galaxy Nexus through a USB 2A port? This is a newbie question. While travelling, I need to recharge my Galaxy Nexus and my digital camera, both of which are meant to be charged through a micro-USB port, ie. 0,5A.

To reduce charging time, I have an 1A AC adaptor but it only has a single USB port.

Google shows a number of two-port AC adaptors:


one port is 1A, the other is 2,1A (it looks like Apple devices expect 2,1A)
this one delivers 2A when using a single port, but 1A when using both ports


In case I only need to charge a single device, is it safe to have it fed 2 or 2,1A? I read that a device only uses the intensity it needs, but will it fry if it's fed too much intensity?

Thank you.
Yes, it is fine to charge a device with a higher current charger.

You can think of current like the device pulling rather than the charger pushing.  The device will only take as much current as it wants regardless of how much the charger is capable of supplying.