After multitudes tests, the charger is able to charge all that have fallen into my hands for a week. The different devices tested: Galaxy S5 Pro Tab 8.4, Tab 10.5 S, Qlive, Sony Xperia Ray, Galaxy Note 2 Headset Sony HR80. I was able to systematically charge 2 devices at the same time and a little faster than the chargers supplied by manufacturers. The charger adapts to the device regardless of the amperage to provide. I encountered a problem on my Tab Pro 8.4 which I was unable to recharge it when I full load utilisai. I thought the loader was not able to charge enough to charge the full load tablet. With the RAV Power 6 USB ports, I do the same test and got the same problem. The tablet continues to discharge by using it at full power. Only a Samsung charger was able to charge the Tab Pro 8.4 at full load. I changed the USB cable used and the problem disappeared. I used the official Samsung USB cables and these cables appear to limit the burden because I suspect they board electronics inside. Now I use my USB ribbon cable RavPower RP-PB19 and no worries. THE Tab Pro 8.4 is charging at full load and even faster than the official charger
In summary, the + - Load a bit faster than the official chargers - Takes any device supports 0.5 to 2.1 A in my case - Blue light that change a little green or red - The ability to recharge faster a fully loaded shelf
Les - - The blue light that never goes out - Provide USB cables so as not to reproduce the phénoène I suffered
I fully recommend this charger that much faster charging my devices and consider using standard USB cables without board electronic