This will ensure you always have a power source during your travel! This lightweight, compact Apple 3G iPhone travel charger plugs directly into your 3G iPhone to provide power to your Apple 3G iPhone while simultaneously charging your battery.  You can leave your 3G iPhone 'ON' while charging but for faster charging time, turn the phone 'OFF' while charging.  Integrated overcharging prevention I/C will help prevent battery explosion due to overcharging of the battery. Apple 3G iPhone Travel Charger features Small, light and portable Charging Indicator Overcharging Prevention I/C Short Circuit Protection Making it the perfect travel companion Allow you to use your phone and charge your battery at the same time. Plug it into any outlet to quickly charge your battery. Apple 3G iPhone Travel Charger