powertop
Optimize battery power usage. tldr-pages
On Linux
Linux
Calibrate power usage measurements
sudo powertop --calibrateIdentifyGenerate HTML power usage report in the current directory
sudo powertop --html=power_report.htmlIdentifyTune to optimal settings
sudo powertop --auto-tuneIdentifyGenerate a report for a specified number of seconds (instead of 20 by default)
sudo powertop --time=5Identify