... .patented 3A usb car charger, USB car charger with two ports.car battery charger for Mobile,GPS,PDA ... circuit protection,over heat,overy loaded protection and safety to use.wide range input voltage DC12V-24V which ... devices.USB output DC5.0V 3A.Support 2 devices with 5V input voltage simultaneously.Chargeable for 5V devices ... MP4/MP5/GPS/PDA/Tablet PC mobile charger in car,charger with two USB ports