This is a simple application to show current battery status (percentage and charging status). It can also watch the battery continuously and send periodic desktop notifications when the battery goes below a threshold percentage.
-v: show application version.
-t: battery percentage threshold, below which the battery will be condiered as low and the user will start getting desktop notifications about low battery.
-l: battery check interval during low (< threshold) battery.
-n: battery check interval during good/normal (> threshold) battery.
-w: continuously watch battery level at preset interval. The interval depends on values of '-n' and '-l'.
-h: get help message and default values of flags/options.
Creating a Systemd Service to keep watching battery even across reboots
Copy the executable to /usr/local/bin/
Create a systemd service unit file like below:
$ cat /lib/systemd/system/battery-notifier.service [Unit] Description=System Battery Monitor and Notifier After=multi-user.target [Service] User=<normal system username but not root> ExecStart=/usr/local/bin/battery_notifier -w Restart=on-failure RestartSec=30s [Install] WantedBy=multi-user.target
- Save the above file and perform the following to always start the battery-notifier service:
$ sudo systemctl daemon-reload $ sudo systemctl start battery-notifier $ sudo systemctl enable battery-notifier