Operating level:
It has a low battery capacity in absolute terms but large capacity given the size.
3300mAh enough to make a full recharge of most smartphone.
By cons, its output delivers only 1A. This is 2 times faster than USB2 computer, it corresponds to 80% of the chargers supplied by the marks but it has one major drawback: it does not can charge most tablets. At the same time, a capacity of 3300mAh, it is rather thought for smartphone for tablets.
In use, there is a strong release of heat, but this is not surprising because there is not really room in the case for insulating surfaces. It's nothing embarrassing and it is interesting to know that it is normal if it happens to you.
In summary:
A great extra battery smartphone (or kindle) but not intended to charge a tablet. Design and truly over, she exudes strength.