Well impressed with this adaptor. I use it to power my iPhone when using the sat-nav and have had no problem. I did wonder about the brightness of the light but in my car the socket sits well below my eyeline so no problem, well recommended.
Bought this with low expectations seeing so many unhappy owners of non-apple cables. I needn't have worried, the cable works fine and being black makes it more discreet when using it in my car. Well recommended.