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MacBookPro (2017) frequently won't charge above 89%

 1 year ago
source link: https://forums.macrumors.com/threads/macbookpro-2017-frequently-wont-charge-above-89.2398087/
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dmaxdmax

macrumors 6502a

Original poster

Oct 26, 2006
Not all of the time but frequently the battery won't charge above the high 80's. I generally use plugged in at my desk so this isn't crritical unless it is a harbinger of total battery or power system failure.

Venture 13.4.1

I did an SMC reset.
System report:
Full Charge Capacity 5528 mAh
Cycle count 228

Any ideas?
TIA

JPack

macrumors G4
Mar 27, 2017 11,131 20,046

About battery health management in Mac laptops

Mac laptop computers with an Intel processor use battery health management, a feature designed to improve the lifespan of your computer's battery.

support.apple.com

dmaxdmax

macrumors 6502a

Original poster

Oct 26, 2006

About battery health management in Mac laptops

Mac laptop computers with an Intel processor use battery health management, a feature designed to improve the lifespan of your computer's battery.

support.apple.com

Thanks. My concern is that two weeks ago this didn't happen and now, all of a sudden, it does. When plugged in it would always show 100% whereas now, with the top closed for 2 hours, it reads 89%.

chrfr

macrumors G5
Jul 11, 2009 12,812 6,229
Thanks. My concern is that two weeks ago this didn't happen and now, all of a sudden, it does. When plugged in it would always show 100% whereas now, with the top closed for 2 hours, it reads 89%.
It's doing your battery a favor. If you turn off optimized charging, it'll hold the battery at a lower level some of the time when the computer thinks you don't need a full charge. It's not ideal to keep a battery at full charge so this should make it last longer.
Reactions: dmaxdmax

scouser75

macrumors 68020
Oct 7, 2008 2,439
I have optimised Chatham turned on but my battery always charges to 100%. How do I get it to go to 80%?

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