Battery charge indicator

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TscienceK Author

Level 1

12 points

Battery charge indicator

Even when my 7-month old MacBook Air is plugged in, the battery indicator in the menu bar reads 79%. Why?

What should I do about it?

MacBook Air

Posted on Mar 28, 2024 2:18 PM

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Answer 1

Top-ranking reply

John Galt

Level 10

160,130 points

Mar 28, 2024 4:52 PM in response to TscienceK

It might be normal. Newer Mac batteries are designed to stop charging at about 80%, and will charge to 100% only once in a while. This is intended to maximize their useful life.

You can force it to charge to full capacity any time you wish though: About Optimized Battery Charging - Apple Support

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Answer 2

TscienceK Author

Level 1

12 points

Mar 28, 2024 6:46 PM in response to John Galt

Sounds somewhat counterintuitive, but I can accept your explanation. I’m 75 years old, and my battery only charges up to 100% occasionally, and I’m doing okay. 👵🏻

Thanks for the quick response.

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Answer 3

John Galt

Level 10

160,130 points

Mar 28, 2024 6:49 PM in response to TscienceK

😄

It's a recent innovation; one they borrowed from the iPhone. I think it's a good idea, and it works well.

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Battery charge indicator

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