Battery on Xmobar

The battery plugin didn't seem to work:

pacman -S bc

gives me a calculator that I can use to divide the full energy from current energy.

echo "scale=2;$(cat /sys/class/power_supply/BAT0/energy_now)/$(cat /sys/class/power_supply/BAT0/energy_full)"| bc -q

a simple cat of /sys/class/power_supply/BAT0/status
gives me charging or discharging

Heres what I've got so far:


~/.xmobarrc

Config {bgColor = "black"
       , fgColor = "yellow"
       , position = Top
       , commands = [   
            Run Com "cat" ["/sys/class/power_supply/BAT0/status"] "battstat" 1000,
            Run Com "battpercentage" [] "battcharge" 1000,
                Run StdinReader
        ]
       , sepChar = "%"
       , alignSep = "}{"
       , template = "%StdinReader%}{%battcharge% %battstat% %date%"
}