This works well and in the actual operation, there is therefore nothing to criticize.
The problem is that the majority of iPhone users either a leather sheath, or other protective cover possesses.
If you want to continue this use, that would mean that you can take out the iPhone (for charging with the Duracell System) from our own shell, in the Duracell shell inside must do.
This is in the long run just is not very pleasant. Since it is simply easier to plug the iPhone quickly to the "classic" recharger.
Conclusion: Operate the system is doing very well. Who currently uses no protective sheath or who do not mind to switch here on this, for which there is a strong buy recommendation.