But now I think I found THE pearl charger that offers 2 USB outputs and each of them would deliver 2.4A!
At first I admit I was pretty skeptical ... I was a little hesitant to plug in my smartphone. So I started by connecting an old GPS. Since it worked, I've connected an iPhone 4S ... the indicator on the smartphone said although he was being charged. I pushed up the vice connect a second smartphone the same time! Again no worries. 40 minutes later all traffic while still nickel. The charger is not burning (like many others)
That is the gem! And best of all your smartphone is protected: the iSmart technology ensures that the voltage supplied is the maximum of what your device supports.
Interestingly, two USB slots gently illuminate in blue when the charger is plugged into the cigarette lighter socket. Thereby correctly identify connections at night.