To charge 2 devices simultaneously

This USB charger RAVPower present for me two big advantages:
- It is universal, to load both a Samsung tablet (with the original USB cable for this) that Acer Liquid phones (Z5 and Duo), external batteries or a Wii U controller (GamePad Pro). And I speak here only of devices that I actually tested this charger. The intensity of the current output adapts automatically to the device (at least that's what it says, I have no ammeter home to check.)
- It allows simultaneous charging of two devices. It's really interesting to reduce the size of electrical outlets, not having to carry multiple chargers when going on holiday, etc.

Of course, you will have good USB cables> unit, since still many devices do not load a standard micro-USB plug.

The design of this charger is also very nice, lacquered black plastic with a blue liserai, matching the LED that lights up when the charger is connected. We may regret that this LED has no function other than decorative, but that's a detail.

In conclusion, this is a very convenient and versatile charger, not ugly, and that works very well, at least in the range of devices that I have tested.