Good flat charger for devices with microUSB

The Akkuladerät is very shallow and not too big and clunky. The term "credit card size" is, however, misleading, because the device is about twice the size of a credit card. But thanks to the flat design and low weight can mn the battery simply plug and carry in your pocket, so you have always a current reserve in an emergency case.

Charging at the outlet was about 2.5 hours. (You can also charge the battery in any USB Anschkuss charge)
A flashing LED indicates the charging process if it stops flashing, the battery is full. Well, the overvoltage protection, which means you can leave the battery safe long into the outlet.
With a single charge my Samsung could be S 4 mini fully charged and the larger battery Lenove my yoga Tabs was 2/3 full. Very decent value.

Easy to use, good performance: Actually 5 stars. 1 star deduction there because of the confusing size specification.