How does battery optimization affect MacBook Pro 2019 charging and why does turning it off and on sometimes work?

How does battery optimization impact the charging of a MacBook Pro 2019? Why do I need to turn the battery optimization option off and on for the MacBook to charge? The strange part is that sometimes this works, and sometimes it doesn’t.


Battery not charging has been a recurring issue, which led me to buy a new charger, only to discover that even the original charger was still working. I have tried resetting the SMC and the machine is up to date with macOS Sequoia 15.3.1, yet the charging issue persists.




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MacBook Pro 16″, macOS 15.3

Posted on Feb 19, 2025 8:11 AM

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1 reply

Feb 19, 2025 9:04 AM in response to Battery_optimization_option

Battery_optimization_option wrote:

How does battery optimization impact the charging of a MacBook Pro 2019? Why do I need to turn the battery optimization option off and on for the MacBook to charge? The strange part is that sometimes this works, and sometimes it doesn’t.

Battery not charging has been a recurring issue, which led me to buy a new charger, only to discover that even the original charger was still working. I have tried resetting the SMC and the machine is up to date with macOS Sequoia 15.3.1, yet the charging issue persists.



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About BHM battery health management M1/M2/M3/M4 SoC

About battery health management in Mac notebooks - Apple Support


Intel

About battery health management in Mac laptops - Apple Support



The rule of thumb—if you are near the mains leave it plugged in, if you need the portability then run on the battery only—this is how you help optimize your battery charging and extend the working life of your battery by reducing the cycle count.


Determine battery cycle count for Mac notebooks

Determine battery cycle count for Mac laptops - Apple Support


Batteries - Maximizing Performance - Apple

Batteries - Maximizing Performance - Apple


Get help with your Mac notebook battery

Learn how to optimize the life of the battery in your Mac notebook, fix battery issues, and get service.

If you see Service Recommended on your MacBook Air or MacBook Pro - Apple Support



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How does battery optimization affect MacBook Pro 2019 charging and why does turning it off and on sometimes work?

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