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My MacBook Pro has just started abruptly shutting down @ approximately 30% battery power

Over the last couple of weeks my MacBook Pro has started shutting down, without any warning, when the battery level reaches +-30%. It used to go down to about 4-5% before giving me warning that my battery was low, it would then go down to about 2% before calmly shutting down. All of a sudden it now simply shuts down without any warning. I plug it in for a minute or so, fire it up and check the battery, level, it is usually about 30%.


I have checked the battery condition:

  • it tells me that the cycle count is 349, Apple says that the battery on my laptop should have a useable life of 1000 cycles.
  • it tells me that the battery service is recommended
  • coconut battery tells me that the capacity has dropped from 4790mAh down to 3132mAh, hence it only has 65.4% of it's original capacity


I am running Big Sur 11.4 as the OS. I know that Li-ion batteries loose capacity over time, I could live with the reduced capacity but this is really irritating. Is there anything that I can do to improve the situation?


Any help would be appreciated

MacBook Pro 13″, macOS 11.4

Posted on Jun 24, 2021 5:40 AM

Reply
Question marked as Top-ranking reply

Posted on Jun 24, 2021 7:19 AM

IK1959 wrote:

• Over the last couple of weeks my MacBook Pro has started shutting down, without any warning, when the battery level reaches +-30%. It used to go down to about 4-5% before giving me warning that my battery was low, it would then go down to about 2% before calmly shutting down. All of a sudden it now simply shuts down without any warning. I plug it in for a minute or so, fire it up and check the battery, level, it is usually about 30%.

I have checked the battery condition:
it tells me that the cycle count is 349, Apple says that the battery on my laptop should have a useable life of 1000 cycles.
• it tells me that the battery service is recommended
• coconut battery tells me that the capacity has dropped from 4790mAh down to 3132mAh, hence it only has 65.4% of it's original capacity

I am running Big Sur 11.4 as the OS. I know that Li-ion batteries loose capacity over time, I could live with the reduced capacity but this is really irritating. Is there anything that I can do to improve the situation?

Any help would be appreciated



What is the "Condition" of the battery as reported by your machine?


Check the condition of your Mac notebook's battery - Apple ...



If you are near the mains leave it plugged in, if you need portability then run on battery.


Batteries - Maximizing Performance - Apple

https://www.apple.com/batteries/maximizing-performance/


Determine battery cycle count for Mac notebooks

https://support.apple.com/en-us/HT201585


About battery health management in Mac notebooks— introduced with macOS10.15.5

https://support.apple.com/en-us/HT211094



Similar questions

1 reply
Question marked as Top-ranking reply

Jun 24, 2021 7:19 AM in response to IK1959

IK1959 wrote:

• Over the last couple of weeks my MacBook Pro has started shutting down, without any warning, when the battery level reaches +-30%. It used to go down to about 4-5% before giving me warning that my battery was low, it would then go down to about 2% before calmly shutting down. All of a sudden it now simply shuts down without any warning. I plug it in for a minute or so, fire it up and check the battery, level, it is usually about 30%.

I have checked the battery condition:
it tells me that the cycle count is 349, Apple says that the battery on my laptop should have a useable life of 1000 cycles.
• it tells me that the battery service is recommended
• coconut battery tells me that the capacity has dropped from 4790mAh down to 3132mAh, hence it only has 65.4% of it's original capacity

I am running Big Sur 11.4 as the OS. I know that Li-ion batteries loose capacity over time, I could live with the reduced capacity but this is really irritating. Is there anything that I can do to improve the situation?

Any help would be appreciated



What is the "Condition" of the battery as reported by your machine?


Check the condition of your Mac notebook's battery - Apple ...



If you are near the mains leave it plugged in, if you need portability then run on battery.


Batteries - Maximizing Performance - Apple

https://www.apple.com/batteries/maximizing-performance/


Determine battery cycle count for Mac notebooks

https://support.apple.com/en-us/HT201585


About battery health management in Mac notebooks— introduced with macOS10.15.5

https://support.apple.com/en-us/HT211094



My MacBook Pro has just started abruptly shutting down @ approximately 30% battery power

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