I have now tested the device for a week every day and am absolutely convinced:
- The absolute particularity: The Micro-USB cable and the Lighting Adapters are integrated into the Power Bank. Man does not have an annoying cable additionally carry with you (see photos). Great idea and implementation!
- The capacity is specified with 2500mAh, this only applies to the internal voltage of 3.7 volts. Through the conversion process to 5V something is lost it, so you have a "real" capacity of about 1800mAh at 5V. So this is with any other Power Bank also. Kindly, the manufacturer in the German manual suggests. 1800mAh ranging from perfectly to the mobile phone in the evening keep going, so I can invite my big smartphone with 3250mAh battery from 0% to about 50%.
Charging the bank is indicated by a red LED and take the empty battery approximately 3 hours. When the Power Bank another device loads, we indicated this by blue light. What I miss something, is an indication of how full the Power Bank is yet, but that's whining at a high level.
Since the Power Bank is really very small and narrow, you can even fit into a shirt pocket.
I highly recommend this unit highly enough, you can order a few hours extend the term of the smartphone easily without a clunky power bank to have to carry.