Apple has released macOS Catalina 10.15.5 Beta 4 to developers after one week Beta 3 was released.
This update brings minor bug fixes & performance improvements along with a new Battery Health Management feature which was announced in macOS Catalina 10.15.5 Beta 2. Apple describes this feature as:
“The battery health management feature in macOS 10.15.5 is designed to improve your battery’s lifespan by reducing the rate at which it chemically ages. The feature does this by monitoring your battery’s temperature history and its charging patterns.
Based on the measurements that it collects, battery health management may reduce your battery’s maximum charge when in this mode. This happens as needed to ensure that your battery charges to a level that’s optimized for your usage—reducing wear on the battery, and slowing its chemical aging.”
This feature is much like Optimised Battery Charging on iOS 13.
You can update to the latest beta on System Preferences on your Mac. This update is only available for Developers and Apple is expected to release the public beta version soon.