Updated MacBook Pro to macOS Sonoma, now battery drains quickly

I updated my MacBook Pro this morning to macOS Sonoma. Everything was good at first and I really like the look and feel. But as soon as I took it off my charger to go to some meetings the battery dropped from 74% to 44% in about 5 minutes. Then as soon as I turned on WebEx the battery dropped from 44% to 7%.


Anyone else having battery drain issues with macOS Sonoma? Is it maybe just temporary from all the background activity similar to the phones?


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MacBook Pro (2017 – 2020)

Posted on Sep 27, 2023 12:36 PM

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Posted on Sep 28, 2023 5:57 AM

One significant contributor to MacBook battery drain after updating to Sonoma or any other new OS is the background setup processes. These background activities like Spotlight reindexing, Photos synchronization, Time Machine backup operations, emails, messages and other app updates.When your MacBook is working on these tasks, it puts an additional burden on both the CPU and GPU, leading to increased power usage and battery drainage. Generally this battery drain is temporary. The best thing to do is to monitor your battery situation and, if active, connect your Mac to a power adapter, allowing them to complete without interruption. This shouldn’t last longer than a couple of days at most.

285 replies

Oct 20, 2023 2:50 AM in response to trashcoder

It is interesting to see how your MacBook(M1)'s battery fares in the evening today, as it is just sleeping and without the wifi connection. Even while sleeping, the MacBook is working, so the battery is not at rest. As wifi is not connected, most probably no open apps too, maybe it's better to just shut off the MacBook for the night. In your way of usage, you are opening your MacBook only in the evening, so it would be really rested being fully off for nearly 15 hours daily. In my Intel MBP 2018, the booting is just a few seconds, and it has a nice booting up sound too. And, the rested battery seems to have better capacity.


By the way, if the MacBook is shut off, whether the wifi is on or off is not significant.

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Updated MacBook Pro to macOS Sonoma, now battery drains quickly

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