MBP Battery "80% max"

[MBX]

Hi there

How long does it take until the battery optimisation kicks in?

I've got the MBP M2 Pro since a week and it still charges until 100% despite optimisation being activated.

My MBP is hooked to an external monitor screen mostly that it's taking power from via USB-C.

Any idea?

 

[Spaceboi Scaphandre]

Don't worry about it. You have battery optimization on so it's charging to full since you're not using it constantly. If you leave it plugged in like I do eventually it'll go to 80% to conserve cycles.

 

[brerlappin]

Mine took about 2 weeks to kick in.

 

[falkon-engine]

How does the battery optimization work with Ventura + M2? Does it go to 80% and stay there?

With M1 Max + Monterey, it was buggy. It would discharge down to 85 percent, then when it reached the minimum, it would immediately charge right back up to 100% and hold there for about a day and then discharge to the minimum again. Ad infinitum. Putting unnecessary stress on the battery. Using up cycles for no reason.

I ditched that and used Al Dente to hold my charge at 80% indefinitely. And never looked back. Al Dente will hold charge at 80% (or whatever percentage you set it to). And if sail mode is on, the battery will slowly decline over several days to the minimum (my minimum is 74%) and then charge back up to 80% and hold there. To me this is a better solution than the built-in buggy implementation in Monterey. My M1 Max is 18 months old, only 8 cycles on my battery, still 100% battery life, according to coconut battery.

Perhaps the built-in battery optimization in Ventura is better, but I have not used Ventura, due to some thunderbolt bugs.

 

[Flav]

How does the battery optimization work with Ventura + M2? Does it go to 80% and stay there?

With M1 Max + Monterey, it was buggy. It would discharge down to 85 percent, then when it reached the minimum, it would immediately charge right back up to 100% and hold there for about a day and then discharge to the minimum again. Ad infinitum. Putting unnecessary stress on the battery. Using up cycles for no reason.

I ditched that and used Al Dente to hold my charge at 80% indefinitely. And never looked back. Al Dente will hold charge at 80% (or whatever percentage you set it to). And if sail mode is on, the battery will slowly decline over several days to the minimum (my minimum is 74%) and then charge back up to 80% and hold there. To me this is a better solution than the built-in buggy implementation in Monterey. My M1 Max is 18 months old, only 8 cycles on my battery, still 100% battery life, according to coconut battery.

Perhaps the built-in battery optimization in Ventura is better, but I have not used Ventura, due to some thunderbolt bugs.

I have the same behaviour in Ventura. I also ditched it and I am happily using Al Dente ever since.

 

[BadMacRumours]

How does the battery optimization work with Ventura + M2? Does it go to 80% and stay there?

With M1 Max + Monterey, it was buggy. It would discharge down to 85 percent, then when it reached the minimum, it would immediately charge right back up to 100% and hold there for about a day and then discharge to the minimum again. Ad infinitum. Putting unnecessary stress on the battery. Using up cycles for no reason.

That's not buggy, that's exactly as designed.

 

[Flav]

Well, the default battery optimisation got my MBA battery to 81% in 14 months. The degradation stopped as I switched to Al Dente.

 

[falkon-engine]

That's not buggy, that's exactly as designed.

Bad design in my opinion.

 

[QuickSilverLining]

I wish I knew about the Al Dente app earlier 🙃 I've had my M1 Max since March '22, and I'm down to 92% health, which I think is about normal anyway but I'm sure could have been better since there were times I didn't bring this out of the house for days or even weeks. But even during those times, I've never experienced any optimization changes by the OS, it never discharged if it was plugged in for extended periods of time. I'm running Monterey as well (still to this day since I haven't been bothered to look at Ventura).

 

[sifpilsen]

(..)I've had my M1 Max since March '22, and I'm down to 92% health(..)

Interesting. The curve for Li-ion batteries tend to flatten before 80% and stay at a plateau before dropping below.

16 M1 Max user here as well, and built-in battery optimisation has been used since it arrived in the OS. Mac was received in late August 2022. Battery still at 100%. I have had instances of seminars, customer visits and such, where I don't plug in for 2 days. So I guess I've had some cycles put through it. In the office it says plugged in to our Samsung 5K 49' wide displays(90W power delivery), home I use an Apple original 90W power adapter from my old and sold 15' MBP 2016.

 

[JPack]

It’ll take 1-2 weeks. This has been unchanged since M1 and Big Sur.

Once it kicks in, battery charge will vary between 70-80%. Battery charging will be placed on hold. Once every few months, the battery will revert to normal behavior and charge to 100%. This will allow macOS to determine battery health and calibrate the gauge.

 

[dhuang]

It’ll take 1-2 weeks. This has been unchanged since M1 and Big Sur.

Once it kicks in, battery charge will vary between 70-80%. Battery charging will be placed on hold. Once every few months, the battery will revert to normal behavior and charge to 100%. This will allow macOS to determine battery health and calibrate the gauge.

Thanks for confirming -- My battery charge stayed at 80% since beginning of March.
In early May, it out of the blue charged itself back to 100%.

Waiting to see when it will return back to 80%.

EDIT: It just went back to 80% SOC on 5/17.