Your Zune player comes with a rechargeable lithium-ion battery. To charge the battery, plug your Zune player into a power source. It’s easy to charge your Zune player by connecting it to your computer. The player should be fully charged in a few hours.
Viewing the battery status
The following icons on your Zune player screen show you the charging state of your battery:
To see the battery state on a Zune HD
To see the battery state on all other Zune players
When the battery gets low
To charge the battery, plug your Zune player into a power source. Here’s how:
When you connect your Zune player to a power source, you’ll see a battery charging icon on your Zune player’s screen. If the battery is very low, you might see a full-screen charging icon or a black screen on your Zune player. When the battery has enough charge, the home menu will appear.
Charging time varies depending on the power source. Typically, if the battery is completely drained, expect it to take about three hours to fully charge when you use a high-power USB port. If you're charging your player on a computer that is also running the Zune software, it can take longer because the software may be syncing to your Zune player. Close the Zune software to speed things up.