It ships with an Energy Star compliant default configuration.

KPowersave provides battery monitoring, CPU frequency control and
suspend/standby triggers, and more power management features for KDE.
It uses HAL (formerly the powersave daemon) and supports APM and ACPI
for several architectures. Together with the powersave package and the
YaST power management module, it is the preferred package that should
be used for battery monitoring and control of power management related
tasks.