It raises the temperature above 50 degrees, and after an hour when the phone finally charges, if you smell it, it has that smell that electronics emit when they are at their limits....I don't know if I got a defective one, but I don't think it will last long.

For basic use good. Does not charge mobile phone quickly but for anything else it does the job normally.

Flawless in what it does, that is a 5V/1A charger and I will point out that: A. It provides stable and not loose connections and B. The fact that its profile is polygonal and not round allows it to be connected to older power strips without occupying adjacent slots.