Apple changes default MacBook charging behavior to improve battery health

Re:Apple changes default MacBook charging behavior to improv... by aaron_m04 on Thursday April 16, 2020 @10:02PM (#22895548)

Same here. When I started working from home, I set up an external monitor with an HDMI-to-USB-C adapter. Whenever it's plugged in, my battery goes down about 4% per hour with the AC adapter plugged in.

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Re:Apple changes default MacBook charging behavior to improv... by kosievdmerwe on Thursday April 16, 2020 @10:31PM (#22895680)

Are you sending your power via a USB C adapter too?

If you use one of these[1] then your laptop will charge more slowly than if you just plugged in the power directly.

[1] https://www.apple.com/shop/product/MUF82AM/A/usb-c-digital-a...

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Re:Apple changes default MacBook charging behavior to improv... by wingworks on Friday April 17, 2020 @12:56AM (#22896322)

I've only ever seen my laptop's battery discharge while plugged in via one of those USB-C hubs which allow PD "pass-through". But have yet to find one that passes all the power through.

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Re:Apple changes default MacBook charging behavior to improv... by TorKlingberg on Friday April 17, 2020 @05:12AM (#22897421)

The adapter claims some of the power for itself and downstream USB devices. I think it has to reserve power statically, so it's always claiming 5W or so.

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Re:Apple changes default MacBook charging behavior to improv... by aaron_m04 on Friday April 17, 2020 @04:43PM (#22902778)

My charger is an Apple product; it was the lowest-price charger they had available ($73 after tax). Two components:

* charging block

* male USB A to male USB C cable

EDIT: I just clicked your link; no I'm not using that. The cable is plugged into the charging block on one end and the laptop on the other end.

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