TLP
http://linrunner.de/en/tlp/docs/tlp-linux-advanced-power-management.html
is a power management command line utility that enhances your existing power management for your system and earlier article we have shown how to check battery status.
https://linoxide.com/check-laptop-battery-status-linux-terminal/
It does not replace your power management plan but adds another layer of optimizing your power plan by making a few tweaks here and there. The default settings come already optimized for your power management settings.
https://linrunner.de/tlp/index.html