Is there a way to manually stop MacBook charging at 80%?

phil2mac wrote:

Idris, you didn't get what I was saying - apologies if I wasn't clear enough.

No, you were perfectly clear. However, perfectly clear ≠ right.

YES, it harms a battery if you leave your laptop plugged in!

No, really, it doesn't. The computer has algorithms to prevent that.

2. Regardless of what you or Apple engineers are telling us:

Why on earth would I trust you over Apple engineers? Especially since you keep saying things that are wrong.

How is your PowerBook 100 battery doing? I guess it's dead ...

It had a catastrophic hard drive failure that I didn't have the money to fix at the time. This was after I dropped it.

For phil2mac,

Continue to micromanage your battery charging, it is your computer and you can do whatever you want to it.

For everyone else,

Just used the Optimized Charging and Manage Battery Longevity settings, if available, and use your computer like you normally would. Whenever you are near a power outlet leave it plugged in and let the computer manage the charging like it was intended to do. There is no need to micromanage your charging and doing so is just a waste of your time and your anxiety over whether you are doing the right thing. You would also need to plan ahead on when you are going to be using the battery, otherwise your computer is going to be at a 60% charge when you need it to be full.

Consider that you are more likely to purchase a new computer before you will ever need to have your battery replaced, because it will be so outdated that current software will no longer be available for it.

I am planning to buy Dell s2722QC as an external monitor to my macbook air m1. It has 65W USB-C display + charging port. I would probably be sitting 8hrs/day on desk using my monitor connected to macbook using this type C. So the monitor would charge my mac whole day. Will this affect the battery health or internal components of my macbook?

PratikAwaik wrote:

I am planning to buy Dell s2722QC as an external monitor to my macbook air m1. It has 65W USB-C display + charging port. I would probably be sitting 8hrs/day on desk using my monitor connected to macbook using this type C. So the monitor would charge my mac whole day. Will this affect the battery health or internal components of my macbook?

No.

Of course this is BS, my '23 MBP after the last OS update has gone to 80% charge limit once in a month, despite it being plugged in 99% of the time. A useless apple solution OR more likely apple wasting peoples batteries.

I don't own another device which doesn't allow me to say - I don't need 100% charge, stop at 80%, other than my costly MBP

The reason people keep asking about this is because the apple solution doesn't work or is so **** it's indistinguishable from something that doesn't work.

ziplockk wrote:

Of course this is BS, my '23 MBP after the last OS update has gone to 80% charge limit once in a month, despite it being plugged in 99% of the time. A useless apple solution OR more likely apple wasting peoples batteries.

I don't own another device which doesn't allow me to say - I don't need 100% charge, stop at 80%, other than my costly MBP

The reason people keep asking about this is because the apple solution doesn't work or is so **** it's indistinguishable from something that doesn't work.

As you apparently haven’t read any of the 3 pages of posts in this thread there is nothing to discuss with you.

Yeah, but apparently the apple solution to this is wonderful, mine is the same, the battery protection software doesn't work, in trying to be smart, apple have demonstrated they are incapable of making even the most simple thing work. Of course it may be that they intend to reduce the life of batteries intentionally cauing people to purchase more product, or am I being cynical (I suspect not)

The 3rd party tool mentioned, incidentally, works perfectly.

Can you tell the sequence please? Because I did stop manually when it charged up to 80%, and then pulled out the cable due to the reason if I keep the cable plugged in it charges further. What I don't like.

So now I was letting the cable in, because the system said that is using cable, but it was charging.. and it went up to 100%.. So now I should leave it in? Because it says The Mac uses charger.. But this way how is it going to go down to 80% and stay there? I hope it makes sense. Thanks a lot!

My Macbook Pro 16 M2 Pro is 5 months old and the battery health is already 96% and 28 cycles with enabled optimization.

I used it for work and 99% with plug in a charger. When I take a break for 5-10 min the Macbook always charges from 80 to 100 percent.

My MacBook Pro 16 M2 pro after 5 months using the battery life is 96% and 28 cycles. Worked with 99% with plug-in the charger. When I take a break for 10 min, my Mac always charges from 80 to 100, then again drop to 80 and again charges to 100 and so 5 times a day

YanH wrote:

lol. Unplug it!

You said "manually"!

There is no need to use a third party app to manage the power/charging system. The Mac handles these systems very well.

And after many many years of saying it wasn't needed for iPhones.... its magically now an option on iPhone 15. All we need is a little bios setting like on a Dell.

Looks nice! Does it involve cost? I'm generally speaking skeptical trusting third party vendors with my hardware. What do you think - any risks?