On Wednesday, February 24, 2021 at 7:41:26 AM UTC-8, legg wrote:
Trying to use windows powercfg command prompt.

C:\Windows\system32powercfg /batteryreport
gets
Invalid Parameters -- try "/?" for help

It's complaining about parameters, the "/batteryreport" in this case. The Windows convention for programs to provide help is for them to support a "/?" parameter. So, try:
powercfg /?

...mark