Automatic Shutdown at defined energy level

[MegaZoide]

Hello :-)

does anyone knows how to configure Fedora (acpi events or such) so that it checks the battery level and if it is beneath 5% shutdown the system with out user request? I've seen that my EeePC 900 when the battery is near 5% it has still a couple of minutes before it actually dies, so I would like the acpid or what ever to monitor the power status and when it reaches the critical 5% nicely halt & power of the netbook.

Thank you very much,