##### Batterie-Status in der Shell abfragen #####
battery()
{
STATE=$(cat /sys/class/power_supply/BAT1/status)
RATE=$(cat /sys/class/power_supply/BAT1/power_now)
LASTFULL=$(cat /sys/class/power_supply/BAT1/energy_full)
CAPACITY=$(cat /sys/class/power_supply/BAT1/energy_now)

PERCENT=$(echo "scale=2; $CAPACITY / $LASTFULL * 100" | bc -l)

if [ "$STATE" = "Charging" ]; then
  echo -en "Charging, $PERCENT%"
else
  if [ "$STATE" = "Discharging" ]; then
    x=`echo "scale=2; $CAPACITY / $RATE" | bc`
    h=`echo $x | cut -d"." -f1`
    if [ -z "$h" ]; then
      h="0"
    fi
    m=`echo $x | cut -d"." -f2`
    if [ -z "$m" ]; then
      m="0"
    fi
    m=`echo "scale=2; $m * 60 / 100" | bc | cut -d"." -f1`
    printf "%d:%02dh, $PERCENT%%" $h $m
  else
    echo -n "On AC"
  fi
fi
}