Which program would be used to notify the user of a low battery on a linux laptop computer?

Linux OS in Laptops are good for Nix users, but it often drains the battery.

Have tried many Linux operating systems, but long battery life is not evident like Windows.

Recommended to avoid charging a battery for a longer duration which might affect the battery hence unplug the power cable when it reaches 100% charge limit.

There is no default application to notify us, when the battery is fully charged or discharged. To receive the notification, we rely on the third-party application.

Initially, preferred to use Battery Monitor application to receive notification, but this app was deprecated.

To overcome the third party app usage, I have created a shell script to receive the notification.

Laptop battery charging and discharging status can be identified using the following two commands.

Using acpi command.

Using upower command.

64%

Method-1: Receive an alert, when the battery level is above 95% or below 20%

This shell script runs in the background on startup and checks the battery status every minute and then sends a notification when the battery level is charged above 95% or discharged less than 20%.

The alert will not get turned off, until your battery is over 20% or less than 95% charged.

Once the script is ready, set the executable permission.

Finally, add the script to the bottom of the user profile file. For system-wide users, add the script on the /etc/profile file. This profile file will allows the system to kick the script when the system starts.

Reboot your Linux system to verify the notification status.

Method-2: Receive notification, when the battery level is charged (above 95%) or discharged (below 20%)

This script is similar to the above script, but it is in Sync with the AC adapter.

If the AC adapter is plugged in and the battery is charged above 95%, it will trigger a notification with a sound, but the notification will not stop until the AC adapter is unplugged.

If AC adapter is unplugged, notification will not appear again until the battery charge drops to 20%.

Once the script is ready, set the executable permission.

Finally, add the script to the bottom of the user profile file. For system-wide users, add the script on the /etc/profile file.

Restart your system to verify the notification status.

Conclusion

This article gives an idea of using our own script instead of using any third pary application to receive Battery status notification.

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Ref: stackexchange