Optimized Battery Charging Not working

yeemabread wrote:

I've had a M1 Macbook Pro for about a year and a half now and its been working great but I have had issues with the Optimize Battery Charging feature.

The setting has been on the entire time I have had the laptop and I have a consistent schedule. I use the laptop on battery for maybe an hour a day during classes and the rest of the time it is plugged into power and connected to my external monitor. My Macbook pretty much never goes under 80% battery.

Despite this, my battery stays locked at 100% 24/7. I have never once seen the charge on hold at 80% or anything.

I noticed the drop in my battery health about 2 months ago and tried turning the optimize battery setting off and on as someone on reddit suggested but its been a while now on the same schedule as usual and it hasn't kicked in.

I̶ ̶u̶n̶d̶e̶r̶s̶t̶a̶n̶d̶ ̶l̶e̶a̶v̶i̶n̶g̶ ̶t̶h̶e̶ ̶m̶a̶c̶b̶o̶o̶k̶ ̶p̶l̶u̶g̶g̶e̶d̶ ̶i̶n̶ ̶a̶t̶ ̶1̶0̶0̶%̶ ̶c̶h̶a̶r̶g̶e̶ ̶f̶o̶r̶ ̶l̶i̶k̶e̶ ̶2̶2̶ ̶h̶o̶u̶r̶s̶ ̶a̶ ̶d̶a̶y̶ ̶i̶s̶n̶'̶t̶ ̶g̶o̶o̶d̶ ̶f̶o̶r̶ ̶b̶a̶t̶t̶e̶r̶y̶ ̶h̶e̶a̶l̶t̶h̶,̶

On the M1 —

The best you can do if you have an issue— equivalent Shut down, close the lid 30 secs+ , reboot as normal.

If no resolve try SafeBoot Use safe mode on your Mac - Apple Support to sort anomalies.

if no insight you can try the Diagnostics to test your Mac

Use Apple Diagnostics to test your Mac - Apple Support

still no resolve—

In or out of warranty you can get a free over the counter 'Apple Service Diagnostics' test /assessment

Make an appointment for a "hardware issue"

Genius Bar Reservation and Apple Support Options - Apple

Outside the USA

Contact Apple for support and service - Apple Support

I see no issue with your usage practice...

The rule of thumb—if you are near the mains leave it plugged in, if you need the portability then run on the battery only—this is how you optimize your battery charging and extend the working life of your battery by reducing the cycle count.

Determine battery cycle count for Mac notebooks

Determine battery cycle count for Mac laptops - Apple Support

About BHM battery health management:

M1/M2 SoC

About battery health management in Mac notebooks - Apple Support

Same happened to my m1 air. Last 6 month it runs 99% of time on battery, but the change level is never below 95%

It looks like an over engineered feature which doesn't work.

Machine learning instead of a single switch in Settings for users who really care and really know what they want.

I found a 3rd party solution finally.

It's called "lDente - Charge Limiter", and works well on my air