M1 MacBook Air Maximum Capacity dropped 1% after 7 months of use

chamathm1 Said:

"M1 MacBook Air Maximum Capacity dropped 1% after 7 months of use: I bought my M1 MacBook Air on 9th of December 2021. When I checked the battery health today (12th of July 2022) it said the maximum capacity is 99% not 100%. Battery condition is normal. Is this okay? Or is it bad? Am I doing something wrong? If yes, what can I do?"

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Battery Health Decreasing:



All is Fine:

Dropping by 1% in 7 months is just fine, and typical.. Note that all batteries are prone to failure. So, once the Battery Health gets to 80%, Apple recommends it is time for a new battery.

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.

Don't worry- this is completely normal. Rechargeable batteries, like all consumables, are components that deteriorate as they age.

Yep- that just means that the battery has been discharged (or the equivalent of a discharge) about 65 times. Mac batteries are rated for around 1,000 cycles, so you're all good.

chamathm1 Said:

"M1 MacBook Air Maximum Capacity dropped 1% after 7 months of use: My cycle count is 65. Is it okay too?"

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Battery Health Decreasing:

Yes. That cycle count is just fine.