bats is an extremely simple battery status printer written in bash. It uses sysfs to get the battery data, so right now it is Linux-specific.
$ # Will show information about all available batteries
$ bats
42DFF
$ # Explicitly choose a battery
$ bats BAT1
76C
The output is in the following format <percentage><status>. The percentage is
the remaining battery charge left, which is calculated by totalling all of the
battery capacities together and getting a percentage compared to the current
charge.
The status symbols transparently represent the battery status as provided by
battery.h:
- C: Charging
- D: Discharging
- N: Not charging (eg. due to battery threshold)
- F: Full
- U: Unknown