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Macbook air (Catalina) switch off or not on good battery

why my macbook air with Catalina OS switch off on 40% or above battery and show low battery warning? it again switch on after connecting to adapter and show 40% battery.

Posted on Jan 21, 2021 1:46 AM

Top-ranking reply

kaz-k

Level 9

50,190 points

Posted on Jan 21, 2021 4:47 AM

Hi,

You should read following documents about how to handle Mac notebook battery.

Manage your Mac notebook computer’s battery - Apple Support

Get help with your Mac notebook battery - Apple Support

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Macbook air (Catalina) switch off or not on good battery

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