Plug PowerJolt Plus into your 12 volt socket and connect its coiled dock cable to your iPad, iPhone or iPod. PowerJolt Plus' 2.1 amp charger provides the charging level needed by iPad and the fastest possible charging for your iPhone or iPod. While it's charging, PowerJolt Plus pops open to reveal another 12-volt accessory socket, built right in. Charge and power your GPS, mobile phone and more. You won't have to unplug PowerJolt to regain the use of the socket.