Unofficial archive. This is a read-only, community-run archive of the Apple Support Community. It is not affiliated with or endorsed by Apple Inc.
littlelle_berry
User level: Level 1 (4 points)

MacBook battery: Is it safe to use while plugged in?

Using while plugged in or not ?


I transferred from windows to Mac just a while ago so I am still not used to MacBook built and functions. With windows, I have to plug it in at all times but I do not feel worried but with Mac , I just am not sure whether if that is fine or not .


My device is MacBook Neo and it has been just 3 weeks since purchasing.


I have searched about this exact question but I have seen both types of comment - 20/80 and plug in.

I would like to know which usage is much more suitable for the MacBook and if using it while plugged in is alright?

And anything about whether I should still plug it in when the battery is at 100%



Thank you !!!!

Posted on Sep 23, 2026 3:53 AM

5 replies

SergZak
User level: Level 6 (11,986 points)

Sep 27, 2026 12:33 AM in response to littlelle_berry

It is perfectly fine to run plugged in, running from the power adapter.

I have been doing so with all my MacBooks since 2011. They in fact are on the power adapter 99% of the time. No issues whatsoever.


If your battery is at 100%, you need to do nothing different as far as the power adapter goes. When the battery reaches 100%, the MacBook will simply stop charging the battery.

MrHoffman
User level: Level 10 (169,253 points)

Oct 18, 2026 2:11 PM in response to ArcheanCheese

ArcheanCheese wrote:
My new Neo I was having the power plugged in whole time I was using it. After about 2 weeks the Neo decided on my usage, sent a message, it'll only charge when it goes below 80% when plugged in. Don't know what that was about ?
I'm not saying anyone is wrong to leave it plug in or not, because I don't know. I've read somewhere that keeping it plugged in always and charging for short time since just dropped below couple percentages to 100 and keep doing that over over again, is not good for a the batteries either.
Plus my Neo says this
" Keeping your charge limit below 100% helps preserve your battery lifespan over time. "


This is normal, and is intended to avoid premature battery wear.


Charging lithium-ion batteries to and particularly then maintaining 100% charge tends to wear the battery more quickly.


The optimized charging monitors usage, and then keeps the charge at 80% for various common styles of usage.


Details about lithium-ion batteries and battery management: Batteries - Apple


There is no issue with running a Mac laptop while it is connected to power.


Or when it is not connected to power.

jeffreythefrog
User level: Level 6 (16,597 points)

Sep 23, 2026 10:54 AM in response to littlelle_berry

I would like to add, it is often RECOMMENDED to keep the MacBook plugged in while using it whenever convenient, and only run it off the battery when you need portability. that also helps in keeping battery charging cycles at a minimum.

WheelieNick
User level: Level 9 (74,110 points)

Sep 23, 2026 4:50 AM in response to littlelle_berry

Yes, it is completely safe to use your MacBook while it is plugged in. 

ArcheanCheese
User level: Level 1 (28 points)

Oct 18, 2026 1:57 PM in response to littlelle_berry

My new Neo I was having the power plugged in whole time I was using it. After about 2 weeks the Neo decided on my usage, sent a message, it'll only charge when it goes below 80% when plugged in. Don't know what that was about ?

I'm not saying anyone is wrong to leave it plug in or not, because I don't know. I've read somewhere that keeping it plugged in always and charging for short time since just dropped below couple percentages to 100 and keep doing that over over again, is not good for a the batteries either.


Plus my Neo says this

" Keeping your charge limit below 100% helps preserve your battery lifespan over time. "

Originally posted at discussions.apple.com/thread/256363348