The Griffin Technology PowerDuo Reserve features the PowerBlock AC charger, PowerJolt car charger and a rechargeable backup battery. The PowerBlock is near universal, providing wall charging for iPod, iPhone and several other USB-chargeable devices. The PowerJolt is a 12 V car charger that works for the same devices as the PowerBlock. The rechargeable backup battery provides hours of use for iPod and iPhone. The reserve battery is small enough to slip into your pocket and can be charged by the PowerBlock or PowerJolt. The PowerDuo Reserve is also Energy Star Qualified, making it a comprehensive USB charging station with a minimal carbon footprint.
PowerBlock AC Charger & PowerJolt Car Charger
Both these chargers are near universal. Both have a dock to charge the reserve battery and a USB port for charging iPods and iPhones, as well as most other USB-chargeable devices
Rechargeable Reserve Battery
The reserve battery can recharge from both the PowerBlock and PowerJolt. It is compatible with iPod and iPhone and provides hours of additional power after the original battery dies
Energy Star Qualified
The PowerDuo Reserve is qualified to use less energy, save money and help protect the environment