Starting with macOS 10.15.5 Catalina, Apple introduced a new battery health management. This new management system is designed to improve your battery’s lifespan. How? By adjusting charging patterns to reduce the rate at which the battery chemically ages. Your iPhone and iPad have had this new battery management system for a couple of years. You can find this in System Preferences > Energy Saver > Battery Health. One thing to be aware of with with this new system is that it might cause your MacBook to display “Battery Is Not Charging” in the battery status menu even when it’s plugged in. That’s normal, and it’s nothing to worry about. Of course, if you regularly see that message, it’s a hint that you may not be using the proper power adapter and cable or that the power source isn’t delivering enough juice.