https://wccftech.com/download-macos-catalina-10-15-5-with-battery-health-management/

Apple has released macOS 10.15.5 Catalina with the new Battery Health Management feature. You can download it right now on your supported Mac.

Probably the biggest feature which Mac users have been waiting for in macOS 10.15.5 is Battery Health Management. If you are a MacBook user and worry a lot about battery longevity, then you will be pleased to learn that a new software update can prolong your investment in a MacBook by taking care of how the battery is charge so that no harm is done when the power cable is plugged in for an extended period of time. You can, of course, turn the feature off if you wanted to. This is all a part of macOS 10.15.5 Catalina, among other things.