The PowerDuo Reserve set is basically made up of 3 parts, the PowerJolt Reserve, PowerBlock Reserve, and battery pack. Let’s first start with the PowerJolt Reserve. The PowerJolt Reserve is a basically a car charger for your battery pack and it also features a USB connection so you can charge your iPod or any other USB connected device while you are still charging the battery pack.
Next we have the PowerBlock Reserve, which an AC charger for the battery pack as well as any USB connected device including your iPod or iPhone. It easily plug into any wall socket for easy charging of both devices.
Finally we have the battery pack. The battery pack is quite small and is made to connect to the bottom of any iPod or iPhone that has the dock connector. It has a button in the middle that when pressed shows you how charged it is. It connects to both the PowerJolt Reserve and PowerBlock Reserve very easily for charging.