Fire hazard! 1

After 15 minutes of charging my phone I have wondered about the enormous heat, but thought to myself, ok is probably okay that way. Fortunately, my phone was already full, why was the charger unattended for 1 hour and connected without a mobile phone at current.
After this hour you could look through through the housing at one point, because it began to melt the plastic and there was only a razor thin.

My conclusion: Stay away!

PS Even if it seems to be an exception should such safety-critical aspects are tested on every device before it leaves the production hall.