I have therefore said device even looked at me from the inside:
An essential element is a voltage regulator of the type ACT4060A who accepts input voltages from 4.5 to 24V and can supply a 2A load. So the device can actually fulfill his promises and can withstand plus experiments in the input voltage. Very good!
In addition to the usual chicken feed (resistors, capacitors, etc.) are still a few specific resistances to the data terminals of the USB connector is connected, the signal to a connected iPhone, that it can get its maximum charging current of 1A. Also it works flawlessly!
Negative I noticed is that the soldering pins of the USB ports to come dangerously close to the pins of the voltage regulator. But to complain about it, I think is inappropriate bearing in mind the low price and impeccable function.
All in all, I consider buying this device for recommended.
