This convenient easy to use portable adapter is truly multipurpose and offers easy charging of your cellular phone from home or office. No need to purchase a desktop charger to charge your phone when you are away from your car. Thanks to this portable ac to dc adapter/converter unit, now you can put your car charger to use even when you are not in your car. Simply plug this unit into a regular 120 volt wall outlet, then plug your car charger into this adapter socket and the other end into your phone and you are ready to charge your phone without needing a home or office desktop charger.