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Zazoh

macrumors 68000
Jan 4, 2009
1,516
1,121
San Antonio, Texas
you can keep it from sleeping sudo pmset -b disablesleep 1. You can reverse this by changing the 1 to a 0. Someone on these forums posted this undocumented command and it was a lifesaver while I was trying to get my desktop setup correct.

I use the terminal command caffeinate
When done Control + C.

It allows display sleep but keeps computer network and system from sleeping. You can also prevent display sleep I believe, but for connecting to work I just need system and network not to sleep.

Man caffeinate from the terminal for more.
 
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hashsi99

macrumors regular
Jul 7, 2011
216
72
I charge to 77% and let it go to about 25-27% before recharging. every couple of weeks I'll charge to 100%. Battery capacity approx 102% after 2 months.
 

spiderman0616

Suspended
Aug 1, 2010
5,670
7,499
I only use mine at night and on weekends because I have a work Mac I use for work, so I only plug it in about once every week and a half to two weeks. Absolutely no charge anxiety for me on the M1. Even when I'm down to 40% I know that I will have plenty of juice for the next day. No need to leave it tethered to my desk--I like to just be able to grab it and go without detaching it from any cables or docks.
 
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hashsi99

macrumors regular
Jul 7, 2011
216
72
10 year old tech is different. Completely different. It's like comparing a car that ran on regular gas to something new. Stop spreading out-dated folklore please.
2016 and 2017 models had a service program by Apple for this issue.

take a minute to use Google. Lots of post 2018 models have had swollen batteries as well.
 

||\||

Suspended
Nov 21, 2019
419
688
It’s 100% true. Look around online. I’ve personally had a 2011 MacBook Pro that had its battery swell up.
Personal experience has shown me it’s false for models made in the last few years. If this happens on a newer model, the battery is likely defective.
 

dieselm

macrumors regular
Jun 9, 2009
195
125
Is there a battery limiter app (for example, sets the macbook's max charge to 80%) that works new Macs?

AlDente doesn't work on M1 MacBooks.
 

hashsi99

macrumors regular
Jul 7, 2011
216
72
Is there a battery limiter app (for example, sets the macbook's max charge to 80%) that works new Macs?

AlDente doesn't work on M1 MacBooks.
Not yet. The dev is trying to figure it out. I was using AlDente on my 2020 intel and it was perfect.
 

Apple_Robert

Contributor
Sep 21, 2012
35,666
52,481
In a van down by the river
When the M1 is plugged in and at 100% battery, the charging aspect does not continue to occur regardless. The OS stops charging to the battery until X time when actual charging will resume again.
 

Zazoh

macrumors 68000
Jan 4, 2009
1,516
1,121
San Antonio, Texas
2016 and 2017 models had a service program by Apple for this issue.
take a minute to use Google. Lots of post 2018 models have had swollen batteries as well.
Not as a result of overcharging. The batteries were defective. Like the exploding Samsungs. They would have shown the same defects if unplugged in day and charged at night.
 
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redcaptrickster

Suspended
Nov 27, 2020
185
351
Most of the time, no. I only charge when it gets to around 20%.

I do plug it in if I’m playing a video game, however.
 

coorsleftfield

macrumors member
Aug 19, 2014
77
53
It takes a while for the battery management to kick in. I’ve been leaving my M1 MBA in clamshell connected to a hub and 4k monitor recently. I haven’t seen any change to charging yet. It still always charges to 100%.

It's super flaky. Mine will sometimes say that it isn't going to charge past 80% due to always being plugged in, then I unplug it and plug it back in and it goes right to 100.. Wish it would work, because I use an external monitor that charges it, so it is always going to 100%.
 
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jdb8167

macrumors 601
Nov 17, 2008
4,859
4,599
It's super flaky. Mine will sometimes say that it isn't going to charge past 80% due to always being plugged in, then I unplug it and plug it back in and it goes right to 100.. Wish it would work, because I use an external monitor that charges it, so it is always going to 100%.
I think it will still always charge overnight. What Apple is doing is reducing the battery “pressure” by not always keeping the battery at 100%. I wouldn’t worry too much about the details. Just let Apple’s software do its thing.

As for unplugging and re-plugging, I think the software takes that as a hint that you want a full 100% charge immediately.

Apple’s batteries are generally pretty reliable. I wouldn’t spend a lot of time obsessing over this. Just use the computer normally.
 

Apple_Robert

Contributor
Sep 21, 2012
35,666
52,481
In a van down by the river
It's super flaky. Mine will sometimes say that it isn't going to charge past 80% due to always being plugged in, then I unplug it and plug it back in and it goes right to 100.. Wish it would work, because I use an external monitor that charges it, so it is always going to 100%.
Apple's software works. When the battery has been charged to 100% and is still plugged in, the OS stops from continuously charging. You may even see the battery get down to 95 - 96 % before the OS kicks back in, and starts charging, as if you just plugged it in.

In my opinion, you should use your Mac as you have been doing and stop focusing on battery charging so much. The OS will take care of it for you.
 
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rui no onna

Contributor
Oct 25, 2013
14,917
13,261
Or just to charge it up and using it on battery by itself?

I know its not good to just keep it at 100% charged all the time, but as of 10.15.5 or .6 didn't they add battery health improvement measures?

Charge overnight, use untethered during the day. The excellent battery life is one of the reasons I bought it in the first place.
 

Toutou

macrumors 65816
Jan 6, 2015
1,082
1,575
Prague, Czech Republic
I use it for work in clamshell mode, so plugged in. I did the same with my 2013 machine, hundreds of hours plugged in. The 2013's battery is still fine and holds around 4-5 hours of charge. Basically, I don't give a damn what the battery wants.
 
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Zazoh

macrumors 68000
Jan 4, 2009
1,516
1,121
San Antonio, Texas
Here you go, @Apple_Robert says trust the software. He isn't wrong.

It is 9am CT so laptop algorithms know I have enough for the day.

Screen Shot 2021-01-21 at 8.55.37 AM.png
 
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