Charging iPhone with step down converter
I bought from eBay a step down converter. It converts the 12v from my car to 5V 2amp. The strange thing is that is does not charge my iPhone, but if I plug in an other USB device, like a powerbank, it charges without problem. Also I checked the output, and that was fine.
Why is my iPhone not charging with the step down converter?
I am using this kind of converter:
Is this a good question?