Toll: iPad Air +6.5 hours mobile

The big benefit is so perfectly clear, but what size / capacity should I use? After a long search, I have decided for this product and have due to the excellent reviews bought two pieces of two different colors. This decision was ideal! Only 3000mAh is simply too little, about 5000mAh those things are again unwieldy. Really bad I find the 3000mAh Dinger in round or square-design to be "thick", so that they can get stuck in a back pocket or pocket can. In addition, "two" instead of a bold thing handy, you can use the one and the other charge. In this case there are with me regularly in cafes, lounges, sockets are there enough yes, but mostly not on the free seat. Sometimes I had to "make" to the power outlet if only because urgent Aufladebedarf. A so cheap Akkugerätchen can also charge unsupervised when it really someone steals, well, but is not a mobile phone, including data, etc.
Until now, after a few cycles for weeks the benefits are in line with the specifications. A tip, maybe it takes someone useful:
If you already know that you need to recharge during the day, then you do that, so when the electricity demand is better at the beginning of the day is still very low. The less current is drawn, the greater the efficiency, ie the longer the operating time can be achieved. This of course applies only to devices that consume less power than is available from the charging. So it is with smartphones, pads at the other hand is not so much (eg iPad: Power consumption approx 0.9A when charging with 1A max now brings not the big advantage, but different in a smartphone with just 0.5A current consumption)
As is well known to you this type of battery is not discharged until the last drop and also not be a long time brimming unused. I believe that people with bad reviews when it comes to battery simply do not know, we to deal with the technology. The "foolproof" battery has not been invented yet ...