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macbook air M1 2020 Battery health issue

Will battery health be reduced to 96 percent in 40 charge cycles?

MacBook Air 13″, macOS 12.1

Posted on Jan 13, 2022 11:05 AM

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Question marked as Top-ranking reply

Posted on Jan 14, 2022 6:28 AM

Rechargeable batteries can lose some initial charge quickly and the last for a long time at that level before losing capacity, some will hold initial capacity for a long time and then start to lose capacity, some will start slowly losing capacity from day one, and any other possible combinations.  It is just the nature of rechargeable batteries.


FWIW, don't try to micromanage your battery and just use the Mac.  If you reach a point in time where the working time on battery is not long enough to meet your needs, then start to worry or just get the battery replaced.

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Question marked as Top-ranking reply

Jan 14, 2022 6:28 AM in response to mithulram

Rechargeable batteries can lose some initial charge quickly and the last for a long time at that level before losing capacity, some will hold initial capacity for a long time and then start to lose capacity, some will start slowly losing capacity from day one, and any other possible combinations.  It is just the nature of rechargeable batteries.


FWIW, don't try to micromanage your battery and just use the Mac.  If you reach a point in time where the working time on battery is not long enough to meet your needs, then start to worry or just get the battery replaced.

macbook air M1 2020 Battery health issue

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