How to Recharge Your Zune
- 1). Slide the power switch to the "Off" position.
- 2). Plug the large jack on the Zune USB cord into the charging port on the bottom of the Zune.
- 3). Plug the USB jack on the opposite end of the USB cord into the USB port of a computer. Turn the computer on. Alternativelly, you can purchase seperately sold AC adapters. Plug the USB jack into the outlet on the AC adapter and plug the AC adapter into a working electrical outlet.
- 4). Charge the Zune. The screen will display a battery icon indicating the battery is charging. A fully discharged battery will take approximately two hours to charge.
- 5). Remove the Zune from the charging cord once the battery icon is completely shaded in indicating it is fully charged.
Source...