Also works to load a Lumia 920 while navigating. But beware: It has the original spiral cables are used! Under normal USB cables the cable cross-section is not sufficient! I've even bought a cable with right angle plug and the thin power lines replaced by what thicker section, then this works!
One star deduction there, because the plug sometimes not so good kontaktet, turn slightly to help then. And the little LED is barely visible even at night ...
