I have a Dell laptop and the battery is good with a 100% charge. Don’t use the battery very often. When I go through the procedure you describe the battery icon/monitor disappears from the task bar.
Then when I go back and “Enable” the same component in the Device Manager, the battery icon is back in the task bar.
I believe that Disables and Enables the driver which keeps the battery charged, and probably it monitors the battery. Since I used my battery so seldom, I’ll experiment with this and see if it speeds up the computer, and also if it affects the battery by being disabled for periods of time.
Interesting point! You may want to try this...with battery installed in laptop, plug in the adapter but do not start windows. I have a feeling the battery charging light will be on, without Windows running. Please post your findings?