There are three ways to recharge the built-in battery.

First, use the 6-pin FireWire cable or high-power USB cable that came with iPod and connect it to your computer. [Note: Only iPod mini will charge directly over USB.]

Second, If you use the 4-pin-to-6-pin FireWire cable or if you don't have access to your computer, you can charge iPod from a standard electrical outlet using the FireWire cable and the included power adapter.

Third, if you have the iPod (with Dock Connector) model or iPod mini, just place iPod into its dock.