This is a gadget for sure but it is very comfortable to have "only" put his phone to charge.
You can leave it on a piece of furniture is nice because it is more worthwhile to bother to get his charger.
The downside is that with a conventional charger, you can use your phone, then it's different and it cuts expenses so if you remove it for use.
I who love making loads of a sudden, it bothers me a little.
With regard to the loading time.
This is very similar to loading with thread.
Last somewhat more negative the price.