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MacBook Pro charging power dips

Hello everyone.


My MacBook Pro (late 2019) charges with the original AC adapter which is connected to a voltage regulator. Thus, the charging conditions are optimal. But during the process charging power and voltage constantly fluctuates (see screenshots below). Moreover, this happens at the beginning of charging, when the maximum power should be supplied. Is that normal? I used the iStat Menus program to measure the power.


Thank you!



MacBook Pro 16″, macOS 11.5

Posted on Aug 15, 2021 6:30 AM

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Question marked as Top-ranking reply

Posted on Aug 15, 2021 7:01 AM


Is your Mac is operating while charging those dips may be more due to changes in operating power draw than charging power draw.


If your Mac is otherwise working correctly, ignore this.

1 reply

MacBook Pro charging power dips

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