nut-monitor : GUI to manage devices connected a NUT server ( https://www.networkupstools.org/ )
power-calibrate : Calibrates the power consumption of a mobile device that has a battery power source. ( https://kernel.ubuntu.com/~cking/power-calibrate/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a luke-jr
For Paludis use this rsync : rsync://gentoo.zugaina.org/luke-jr-portage
If you have a problem : ycarus(-at-)zugaina.org