Well, after 5 years using iPhones I decided to change for a new device. And I choose the new Google Nexus 5.
While I was researching, Amazon gave me a suggestion, one Expower()Tm QI mini wireless charger and it caught my attention. So I saw all the informations and decided to buy.
Unpacking the product, which has a small package I could find a small and very thin plate, two cables (one small and one large) and the user manual.
The plate is ruberized on top and the bottom. So it doesn't slide in the surfaces and the cell phone when it's on top doesn't slide as well.
Plugging the charger it's possible to see a red light on the border of the plate and when you put the device on top you can rear a beep sound and the light turns into green. It shows that your device is being charged.
When you place it in a wrong position, you can hear the beep sound and the light flashing, so you need to replace the device.
2 hours later my device was full charged and ready to use.
To resume, the charger is really good, useful, good to use when you are travelling, not heavy and I would highly reccommed.
It's good to know that it only works with Nexus 4, Nexus 5 and Nexus 7. I tried some Samsung devices and the iPhone and it didn't work.