RAVPower® RP-PB19 15000mAh External Battery

I did not until recently, that there are such devices at all, then a friend told me of it and for me it was clear that I now need a Power Bank!
I like going to festivals, and anyone who does so well aware of the problems with the battery ...
You have to sometimes call by shorting and acts as a camera, the smartphone most indeed.
You could take a spare battery in order to be then quite far forward, but there is no final solution when man wants to leave his cell phone 5 days in use - so Power Bank.
I wanted to one with sufficient load capacity, there is probably something more manageable units than this, but then also the capacity is just lower.
I chose because of the many good reviews and the price / performance ratio for this model and as it was done and we went to Rock im Park I was soooo happy with the purchase.
I have my phone at night then hung on the Power Bank and my observation, was the loading speed of a power outlet in every way. I was actually even gracious and have my girlfriend, who was not as well prepared as I,
can use the second USB port :-)
The integrated lamp is lit constantly during use, was now in the tent but did not bother us.
The button for turning on / off is recessed slightly, and must sec for both 3 approx. be held down, both reduces the risk of accidental switching on during transport but incredibly, was important for me before buying.
The five days has managed the Power Bank, after about 5 cargoes some juice was even on it.

Back home, the Power Bank has been recharged, it takes a little, a little more than 10 hours there were already I think, but that's no problem for me.

I had the Power Bank still connected to grill with at a friend's, got my phone and a Mobile Boombox, perfect!
And in August is approaching the next festival :-)

Conclusion:
Immensely practical gadget for excursions, festivals, etc. I do not regret the purchase and would recommend the device only!

Updated on 12/05/2014 Version 14000 to 15000

I now have the 15000mAh model that somewhat more
Capacity, has only minimal differs externally and on the dimensions of the predecessor, the functionality is also impeccable. The review remains, since all of the above arguments and descriptions remain valid.
It is and remains a great (festival) gadget, just with a little more load capacity!

There continues to be strong buy recommendation!