The plug, with which the various charging cable (Praise: There are quite a few different connectors for different mobile phone types) are attached to the battery Halerung, are too small and like to slip out. I had to put cell phone and charger very carefully, otherwise it will not LUDT on. The charging power was so weak that neither my nor my fellow smartphone could be so really loaded: The charger has delivered about as much as the phones have consumed. So I can not really recommend ...