Annual performance

I have used up my 3x completely empty Actionpro X7, and even charged my empty Samsung Galaxy S3, and less than 50% of the Power Bank. That worked for me more than sufficed. While it weighs a bit, but that's not surprising for batteries. If the Power Bank once empty (0%), then it needs anyway quite a while until it is reloaded - have the charger my S3 used. So it took a whopping 14 hours. I had here and there the feeling that the state of charge would never change, but simply determines is just at the high total capacity. Device itself be refueled at full load speed, so when I would use a suitable power supply (not just with simple 5V USB power).
The gimmick with the built-in LED emergency flashlight as I find very good. Since you can sometimes read a book at the cottage.

The only drawback: during the own charging power bank is not at the same time to load other devices capable.