Battery inside, unit turned on, first surprise: Why does the only 97% capacity on (measured with coconutBattery app). Then read other reviews on batteries similar design: Aha, may be that the even higher exposure through the use and proper calibration. No sooner said than done: then significantly increased 100% capacity, battery life up about a week ago - everything was great.
A week later, then first disillusionment. Despite very low usage, the maximum capacity of the battery has decreased from the maximum value according coconutBattery of 5,794 mAh (5 charging cycles) at 5139 mAh (9 charging cycles). That is almost 11% loss in one week.
We'll see how the battery further developed, from an initial 5 stars I would but only max. 3 give - for the rapid loss of capacity then it is too expensive.