What should you use?

You have a laptop. Recently, you discovered that the battery life on the laptop is less than expected.
You need to generate a report that lists the expected battery life after a full charge and that shows historical battery life.
What should you use?
A. The Power & sleep setting in the Settings app
B. the Powercfg command
C. Power Options in Control Panel
D. Performance Monitor

Correct Answer: B
Explanation/Reference:
Launching the PowerCfg command and running the Battery Report is easy once you know how.
To begin, you’ll need to open an Administrator Command Prompt, which you can do by right-clicking on the Start button and selecting the Command Prompt
(Admin) command. Then, type the command: powercfg /batteryreport and press [Enter]. The Power Configuration Utility will immediately compile the report and display the message shown in Figure A.
Figure A

References: https://www.howtogeek.com/217255/use-the-hidden-powercfg-tool-to-optimize-battery-life-on-windows/