Powering Down when unplugged

Question

MacBook Pro 13" met twee Thunderbolt-poorten 2020

De 13" MacBook Pro, uitgebracht in mei 2020, is uitgerust met quad-core Intel Core i5- en i7-processors van de 8e generatie en een geïntegreerde Intel Iris Plus 645-grafische kaart. (Model A2289/EMC3456 met twee Thunderbolt 3-poorten)

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Fred Savage @fredsavage

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Gepost: 22 sep 2024

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Powering Down when unplugged

Our 2020 13” MacBook Pro will power off immediately after charging cable is removed, even with 100% charge, and will not power back on using the power button.

Battery is newly replaced and showing "Normal" in system settings. I have tried resetting SMC and PRAM/VRAM. The only way to get it to power on after powering down from removing the power cord is to reset the SMC it seems.

Has anyone experienced this before and found a solution? Any help appreciated.

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Ja Nee

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Hopefully I selected the correct version of your system this is the two port version vs the four port.

22 sep 2024 door DanJ

I have this issue before on 2 MacBooks (Air & Pro 2017 - 2012) They had the same issues when unconnected, lights out.... The issues I had were the power from the battery was not being relayed to the board some shorted components. it needed board level fixing by an experienced tech guy. This also strangely happened after installing a brand new battery on them... Now I always make sure the board is drained of all power by pressing the power for 30 seconds, and then a few times more just for good measure before I touch anything inside.

22 sep 2024 door livfe

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Hopefully I selected the correct version of your system this is the two port version vs the four port. — DanJ
I have this issue before on 2 MacBooks (Air & Pro 2017 - 2012) They had the same issues when unconnected, lights out.... The issues I had were the power from the battery was not being relayed to the board some shorted components. it needed board level fixing by an experienced tech guy. This also strangely happened after installing a brand new battery on them... Now I always make sure the board is drained of all power by pressing the power for 30 seconds, and then a few times more just for good measure before I touch anything inside. — livfe

DanJ @danj Rep: 502,7k Self employed contract worker 35 347 977 · Answer 1 · 2024-09-22T15:48:15-07:00

DanJ @danj

Rep: 502,7k

Self employed contract worker

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Gepost: 22 sep 2024

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Let’s give this a try, restart your system while the charger is plugged in, then when you press the power button you want to press the D key to enter into the Onboard Diagnostics let’s see if you get any errors.

Then if that doesn’t tell you anything install this gem of an App CoconutBattery. what we want is to run the battery down a bit after you’ve managed to get the system to run off the battery.

Please let us know the error message and also post a snapshot of coconut battery while the battery needs charging.

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MacBook Pro 13" met twee Thunderbolt-poorten 2020

Powering Down when unplugged

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