!st off I would try to reset the [link|https://support.apple.com/en-us/102605|SMC] & [link|https://support.apple.com/en-us/102539|PRAM], then run [link|https://support.apple.com/en-ph/102550|Apple Diagnostics] with the charger connected (Power Up + "D" key until the prompts), then install [link|https://www.coconut-flavour.com/coconutbattery/#plus|CoconutBattery] and add the screenshots to your question with any info provided from the diagnostics.
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!st off I would try to reset the [link|https://support.apple.com/en-us/102605|SMC] & [link|https://support.apple.com/en-us/102539|PRAM], then run [link|https://support.apple.com/en-ph/102550|Apple Diagnostics] with the charger connected (Power Up + "D" key until the prompts), then install [link|https://www.coconut-flavour.com/coconutbattery/#plus|CoconutBattery] and add the screenshots to your question with any info provided from the diagnostics. Maybe some further info can be found in any [link|https://www.ifixit.com/Guide/How+to+determine+Mac+shutdown+causes/119528|system logs].
!st off I would try to reset the [link|https://support.apple.com/en-us/102605|SMC] & [link|https://support.apple.com/en-us/102539|PRAM], then run [link|https://support.apple.com/en-ph/102550|Apple Diagnostics] with the charger connected (Power Up + "D" key until the prompts), then install [link|https://www.coconut-flavour.com/coconutbattery/#plus|CoconutBattery] and add the screenshots to your question with any info provided from the diagnostics.