On Wed, 24 Feb 2021 22:06:23 -0800 (PST), Mark Geisert
wrote:

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

OK. I googled it. This is W8 and later.

RL