MacBook Air shuts down at 40% battery despite 100% health

I've bought my MacBook Air with M4 chip around spring this year. I use it for normal stuff- shows, movies, school....And every time my laptop reaches its battery to 40%ish, it shuts down automatically. When I plug in the charger, and when it turns on, it starts charging from 10%. And to add- my battery health is on 100%.

Any advice? Thank you in advance.

MacBook Air (M4, 2025)

Posted on Sep 28, 2026 11:56 AM

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MacBook Air shuts down at 40% battery despite 100% health

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