The battery monitor supports a number of power management backends. If it
is available, the monitor will attempt to use the freedesktop.org
Hardware Abstraction
Layer. If it is unavailble or unsupported on your platform, the
battery monitor will attempt direct access to the power management system.
Not all power management backends are available from all vendors, and some
vendors add their own additional backends for specific platforms and
hardware. If the battery monitor is misreporting information from your
battery see .
