TLP implements advanced power management for Linux.
TLP is a pure command line tool with automated background tasks.
It does not contain a GUI.

Notes:
Remove any power saving settings/scripts (e.g.: in /etc/rc.local) or
laptop-mode-tools prior installing or TLP may not work properly

See README.SLACKWARE for more information about post-installation script

An additional configuration is available for Thinkpads.
See the website for more details.
http://linrunner.de/en/tlp/docs/tlp-linux-advanced-power-management.html