Don't let the battery die completely.
- To get the most life out of your battery, don't let it discharge fully--that is, don't run it until it's dead.
Reduce demands on the battery.
- Play your music by album or by playlist, rather than hopping from one track to another.
- Use AAC or MP3 files rather than WAV or AIFF. Because WAVs and AIFFs are uncompressed and, therefore, much bigger than compressed files
- Minimize your use of the backlight or turn it off completely.