The charger has two USB outputs and triggers in the car my old charger from a USB output. This is great for my wife, because by the continued operation of your smartphone is constantly derAkku chronically empty. ;-)) From now on our smartphones can be loaded comfortably at the same time in the car. Even Apple products (iPhone 5) are detected and automatically loaded with the correct charging current. Very convenient unobtrusive small LED is available in blue, one finds even without the interior light to turn on the charger in those dark car.