I have chosen this station because they, unlike the original Samsung charger next to the second battery also can load the phone itself. But there lies the problem. The device fits into it without the back cover. and even slides, the built-Micro USB connector only very reluctantly in the smartphone. The second time, it is then already happened: The plug dissolves at one side of housing, breaks off and becomes absorbed. I opened the case and found a tiny then it loose cog ago that was once attached to a tiny soft plastic tab. A second screw was about to even make their way. That can not work! To remedy this, I lined the plug together with its mounting in the housing with fixed hot glue. And where I was just about even the left arm of the mobile top stand was cut. Now the S4 fits in well with battery cover and even with FlipCase. At the overtighten sitzenen USB plug the action has unfortunately brought nothing and so I'll probably take this charger, the übrigends lacks the power supply, for charging the second battery pack. Conclusion: rather just buy the original Samsung charger for the second battery. This is also not expensive.
Addendum: A day after writing the review I received an unsolicited second charger. The covering letter HandyNow wrote that a faulty batch was launched by accident, of which I would possibly be affected. This must be true. The USB port on the new device is mechanically fixed. The criticisms of the USB to fixed seat and the impossibility remains to lay the S4 with battery cover in the charging unit.