Easy laptop battery saving tips

The below article gives a few quick hints on how to make your notebook battery last longer than usual. Other than that, you can try to
- dim the brightness of your display if you don't need a very bright one
- disable certain hardware, eg. infrared devices
- underclock your CPU if supported
- use regular LAN instead of WLAN if available
- Don't run external hardware you do not need, eg. external hard disks, mice, keyboard, printers etc.
- Disable any programs which constantly use CPU power
- Disable any bright desktop background wallpapers

Source: Techi Warehouse: Battery Saving Tips (2006-06-30 22:41:58)