Why does my MacBook Air battery drain after shutdown?

After I shut down my MacBook Air and close it - with a fully charged battery. When I open it and sign in, I noticed the batter is either down or completely drained. I don’t use it everyday. I have restarted, shut it down, checked the charger (which works great)… I don’t know. Any help?


[Re-Titled by Moderator]

MacBook Air 13″, macOS 15.3

Posted on Mar 8, 2025 2:43 PM

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Question marked as Top-ranking reply

Posted on Mar 8, 2025 2:58 PM

Depending on how long your laptop has been completely shutdown could affect the battery recharge ability.


Lithium batteries, not just the ones used in your Mac, cannot be left with little or no charge for extended periods of time (think months). If they are, they start losing their ability to be fully charged.


Even if this it not the case here, it does appear from what you provided, that your laptop's battery may be defective. It should not discharge fully overnight, especially if it has been properly shut down.


You can check what macOS thinks the battery status is by going to:

  • System Settings > Battery > Battery Health
  • It will show one of the following three results: Normal, Replace Soon, or Service Recommended
  • You will also see the battery's Maximum Capacity value, with 100% being ideal (but even new batteries rarely have this value). Apple only considers that a battery requires replacing if that value is at 80% or less.


Please post back your findings.


Addendum: I just saw your second post, after I posted my reply. Yes, it is "normal" for the battery to drain a bit more rapidly after a recent macOS update or upgrade as numerous things happen in the background for the first day or so. However, this should return to normal after that.

4 replies
Question marked as Top-ranking reply

Mar 8, 2025 2:58 PM in response to Tootsie1967

Depending on how long your laptop has been completely shutdown could affect the battery recharge ability.


Lithium batteries, not just the ones used in your Mac, cannot be left with little or no charge for extended periods of time (think months). If they are, they start losing their ability to be fully charged.


Even if this it not the case here, it does appear from what you provided, that your laptop's battery may be defective. It should not discharge fully overnight, especially if it has been properly shut down.


You can check what macOS thinks the battery status is by going to:

  • System Settings > Battery > Battery Health
  • It will show one of the following three results: Normal, Replace Soon, or Service Recommended
  • You will also see the battery's Maximum Capacity value, with 100% being ideal (but even new batteries rarely have this value). Apple only considers that a battery requires replacing if that value is at 80% or less.


Please post back your findings.


Addendum: I just saw your second post, after I posted my reply. Yes, it is "normal" for the battery to drain a bit more rapidly after a recent macOS update or upgrade as numerous things happen in the background for the first day or so. However, this should return to normal after that.

Mar 8, 2025 3:01 PM in response to Tootsie1967

I just read some threads on the same issue from February 2024 with MacBooks running Sonoma. Apple techs said that perhaps with the new updates - but that clearly has not solved the issue. Another replier said that it is a problem with iOS that came with the new Sonoma update. I hope there is a fix for this as I travel with my laptop and cannot have it draining over night only to open it on a flight and not be able to use it….


[Edited by Moderator]

Mar 8, 2025 4:16 PM in response to Tesserax

My macbook air battery is always charged at 100% prior to shut down. It may stay shut down for 2-3 days, never longer than that. For instance, on Wednesday the batter was charged at 100%, I shut it down, then opened it up on Saturday to find the battery had drained to 70%. When I opened the laptop, I had to sign in, so it was definitely shut down properly.


I just checked the battery health - it is at normal. There isn’t a “Maximum Capacity Value” area in System Settings > Battery > Battery Health. There is a manage batter longevity which is turned off and the system will not allow me to turn it back on. I know it was on last week because I had checked my battery health then.


Any other advice? Thanks!

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Why does my MacBook Air battery drain after shutdown?

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