A charger can not just shine with many features now, a LED indicates, when voltage is applied, the replacement of the plug folds solid, my iPhone was usually loaded reliably. The only exception is at a high temperature (ie iPhone) Warm appeared on the display the symbol for unit loads, and after some time it turned up because of a dead battery completely. This happened when the iPhone was under load (by GPS navigation). It helped to keep the iPhone in the draft of a car air conditioner. That this has anything to do with the Macally Power Adapter, I think rather unlikely, but it is here, at least documented as a tip.
I forgive 5 stars for the value for money and 4 for the mechanical quality. My overall rating is 4.5 stars, which can be not enter, I round therefore generously.