How can I re-calibrate MacBook Pro 14" M4 (macOS 15.2) battery

Ahahahah, that's exactly what I want to see on the forum with a solution to the $2000 laptop problem.

Very funny, you made my day.

It's the same thing if I told you: my pants are falling off, and you would advise me to close my eyes to it and not pay attention.

Super obvious, it shouldn't work that way, especially on a laptop for $2000

Apple have not recommended any calibration since they stopped using quick-detachable batteries about 2009.

The only "reset" procedure that involves the power system is for the System Management Controller (SMC).

Reset the SMC of your Mac - Apple Support

There is no described process for recalibrating the battery in the current MacBook Pro models.

Your device is warrantied for a year. If you discover that you cannot get an acceptable run time from the battery and/or the battery health drops to near 80% within that year (System Settings > Battery > Battery Health), then you should consider making an appointment at the Apple Store and have the laptop evaluated.

You can make a Genius Bar appointment for hardware/software service and support using this link: Contact Apple for support and service - Apple Support

Get your Mac repaired and see how much will it cost: Mac Repair & Service - Apple Support 

Call Customer Support (800) MY–APPLE (800–692–7753) or on line /getsupport.apple.com/ 

or call AppleCare Support at 1-800-APLCARE (800-275-2273) 

the system estimate of battery fullness has always been VERY coarse.

It's a little like having a gas gauge in a car with only one or two marks on the entire scale from full to empty.

There is no calibration process for the battery.

When you have ac power close you should plug in the computer to use that. When you have to be mobile then of course run the laptop on the battery. The MacBook Pro M4 14" should run all day, maybe 12-15 hours(?), before it shuts down. Your mileage will vary.

Use your device, but bon't obsess over the state of charge of the battery, the calibration and the charge cycles. The Mac and the macOS are designed to manage the battery charge and eventually learn your use patterns to optimize the charging. This process can take weeks, even months, before it settles into a routine. It will take longer if your use of the device is sporadic.

Your device is warrantied for a year. If you discover that you cannot get an acceptable run time from the battery and/or the battery health drops to near 80% within that year (System Settings > Battery > Battery Health, then I would consider making an appointment to the Apple Store and have the laptop evaluated.

I understood the problem and I stand by my answer.

The state of charge percentage of the battery display has never been spot on, in my experience. So, I plug in when ac is available and I unplug when it isn't. I close the lid when I'm not actively using the laptop to conserve energy. If I'm going to be mobile tomorrow I plug in overnight and start the day with a full charge.

If you believe this to be a software fault, then make sure you keep the OS updated to the latest release version. Things like this are often addressed with the incremental updates that drop occasionally. The current release of macOS Sequoia is 15.2.

There is no permanent charging schedule.

I was charging before this incident, as usual, I see that the battery icon has turned red and shows 19%, I put it on charge, and charge it to a full charge of 100%

About 1 hour and he's 100%, I work on him a little bit, maybe 4-6 hours a day.

This whole week, the MacBook turned off 3-4 times, with a residual charge of 19-20-28%, when before I could sit up to 1% and this did not happen

But I have a Macbook m1 pro 14.2 10/16, 16GB and 1000TB.

It seems to me that the problem is widespread, and it cannot be that 5-6 people on the forum have this problem this week

<< There is little information on the Internet, I do not know how to do the right thing. >>

That computer is a battery-CAPABLE device. It is not optimized as a battery-operated device. (It is NOT an iPhone.)

Your computer performs best when connected to AC power, such as the power adapter. It can use the full output of the Power Adapter AND when doing especially challenging work will also freely "borrow" power from the battery. In some cases, even with the power adapter connected, the charged state may decline during very stressful work.

When used only on battery, your computer has no extra cushion of power, and may perform more slowly. However, for ordinary non-stressful tasks this may not be objectionable (possibly not even noticeable.)

In general, you should ALWAYS connect a power source when it is possible to do so, and only run on batteries (which could be somewhat slower) when no power sources are at hand. Your Mac maintains its battery charge levels under program control, and will NEVER over-charge.

<< there is a problem that it turns off at 20 percent without warning, >>

Why are you running your Mac down so low? When you get anywhere below a quarter full, you are at risk of sudden and unexpected "out of gas".

PLUG IT IN and do not run it down so low, except when you have NO other choice.

<< What do you mean by "always"? >>

"In general, you should ALWAYS connect a power source when it is possible to do so, and only run on batteries (which could be somewhat slower) when no power sources are at hand. Your Mac maintains its battery charge levels under program control, and will NEVER over-charge. "

So when you arrive at a new location, you look around and find a power outlet. You sit closer to it. You plug in your power adapter.

When you put your computer down for the night, you make certain that the power adapter is connected.

If the cord is too short, Apple sells an AC 'extension cord' for your power adapter for about US$20.

Your battery will have a longer lifetime if you don't run it down so low.

loadaverage wrote:

Thanks for the information, but I don't see how this is connected to wrong estimated charge displayed on macOS?

The fullness ESTIMATE is sometimes made MUCH worse by tiny internal weaknesses in the individual cells that make up a Mac battery. Suppose one or more cells are getting weak. When the charge level of the group approaches some threshold, say, 20 percent, the total output of the battery could collapse suddenly if ALL the component cells can not carry their part of the load.

The Estimate will not change immediately. But your behavior must change, or it will catch you again and again and again.

if you keep your MacBook at a higher change levels in general, you will rarely care when it says the charge level is low, and exactly how low.

THE EXPERT!

What are you talking about?

I'm telling you that I use my MacBook without a network connection, it runs on battery power.

There was no problem for 2 months, now it suddenly started shutting down without any notifications (going into hibernation).

I explained to you how I use it, if a problem appears, I probably need to solve it, no?

You don't need to teach me how to charge and discharge a MacBook, BECAUSE everything was fine for 2 months.

Moreover, why does my MacBook SUDDENLY turn off by 19-20-28%, and some Windows laptop works the same way after 4 years of similar conditions?

Honestly, it's very funny.

The expert.........