Mail finally arrived about an hour ago, in it was the precious package from V4L that had not only the 2 new usa flavors (review to come shortly), but the usb wall adapter. Pulled out the multimeter, and the lowest ohm wow cartos in my possession (ranging from 2.1-2.3 ohms). The wall adapter is rated for 5v at 2.1a. The car adapter is rated for 5v/2a, but the two I've purchased actually were able to put out 2.3a without a problem. Hopes were high for the wall adapter, and it hasn't disappointed. A 2.1 ohm carto will pull 2.38 amps at 5v, on the car adapter it will drop the voltage down to 4.83v to compensate. With the wall adapter used in this test, it's running at 5v at 2.38a, no voltage drop at all. This means even if you get the lowest ohm wow carto I've seen you'll still get the full 5v. Very impressed by these numbers, the usb wall adapter I currently own limit is also 2.3a max (it too was rated for 2.1a. Great job V4L. 