Motorola DROID 2 A955 Combo Rapid Car Charger + Home Wall Charger + USB Data Charge Sync Cable for Motorola DROID 2 A955 Both chargers have Integrated circuits for overcharging protection Travel charger automatically adapts to any AC voltage (90Vac to 240Vac) Car charger operates from 10Vdc to 26Vdc Both chargers are very light and portable Intelligent IC chip inside recognizes a fully charged battery and automatically switches to a saver mode to prevent overcharging and short circuit