Was intended to charge the iPhone in the car or to assist in power hungry GPS usage the battery. Practically this with your own USB cable from the iPhone.
The only positive thing about it: he does upload. But as soon as you plug this small charger even in the cigarette lighter (so that the small blue LED) generates a strong noise of the radio reception. This is truly a NoGo for a car charger, regardless of their station in the background of the radio is a lot of noise exists. This little thing pulled back and the crystal clear sound is back.
Occurs in an Audi A6 Avant built in 2009 ... if I want to invite my iPhone I turn now always on CD operation to because affects the small Belkin charger with its electromagnetic radiation fortunately nothing. Too bad, because since it is so small you could leave permanently plugged it in the center console, because even the cover of the center compartment can carry on.