macOS Catalina 10.15.5 comes two months after macOS Catalina 10.15.4, which introduced the ability to limit who can talk to you in Screen Time. As you know, developers are always the first to receive a new version of operating systems. They are given the opportunity to test updates and prepare their applications for new standards. It also helps to collect feedback from professionals on what needs to be corrected before mass release.

Battery Health Management

  • The new version of the system introduces the Battery Health Management feature for MacBooks. It is designed to extend the life cycle of laptop batteries by reducing the rate of chemical aging.
  • The Battery Health Management service analyzes the battery health and charging pattern, and in some cases will not allow the battery to be charged to its maximum capacity. Constantly charging your MacBook at full capacity can reduce the battery life.
  • When your Mac is plugged in and the battery is fully charged, Battery Health Management will kick in and stop the charging process.
  • Battery Health Management is an optional feature and can be disabled in the system preferences.

If you want to turn it off, follow these steps:

  • Choose System Preferences from the Apple () menu, then click Energy Saver.
  • Select Battery Health.
  • Uncheck Monitor Battery Health, then click OK.

Other improvements

  • Introduced a FaceTime option to display the same size images for all participants in a call.
  • Introduced a new calibration tool for Pro Display XDR
  • Fixed an issue where the Reminders app might not send notifications for recurring reminders.
  • Fixed an issue that made it difficult to enter your password on the sign-in screen
  • Fixed an issue where the notification icon would still appear in System Preferences even after installing an update.
  • Fixed an issue where the built-in camera might not be detected when trying to use it after using a video conferencing app.
  • Fixed an issue on Macs with the Apple T2 Security Chip where the built-in speakers might not appear as an audio output device in Sound preferences
  • Fixed a stability issue when uploading and downloading media from iCloud Photo Library while your Mac is asleep.
  • Fixed a stability issue when transferring large amounts of data to RAID volumes
  • Fixed an issue where the Reduce Motion Availability setting did not reduce animation speed during a Group FaceTime call.
  • Software Updates, What’s New