macOS 11.3 Could Ensure Your Mac is Fully Charged in Time for Calendar Events - MacRumorsOpen MenuShow RoundupsShow Forums menuVisit ForumsOpen Sidebar
Skip to Content

macOS 11.3 Could Ensure Your Mac is Fully Charged in Time for Calendar Events

Apple appears to be planning a meeting-friendly improvement to its Optimized Battery Charging feature on the Mac in macOS 11.3.

macos big sur calendar
New code in the second beta of macOS 11.3, discovered by MacRumors contributor Steve Moser, suggests that the upcoming software update will ensure a Mac is fully charged to 100% prior to a scheduled calendar event, such as a meeting.

macOS 11.3 will ensure that a Mac finishes charging to 100% three hours prior to a calendar event's start time, the code suggests, although the exact timing may vary depending on whether an alert is set for the calendar event.

Macs running macOS 10.15.5 or later have an Optimized Battery Charging feature that helps to reduce wear on the battery and improve its lifespan by learning the user's daily charging routine. The feature delays charging the battery past 80% when it predicts the user will be connected to power for an extended period of time, and aims to charge the battery before they unplug from power, according to Apple.

Optimized Battery Charging can be toggled on or off in System Preferences > Battery > Battery on both Intel-based and M1-based Macs, but there are certain other battery health management features that cannot be disabled on M1-based Macs.

Related Forum: macOS Big Sur

Popular Stories

Apple Event Logo

Apple Just Released a New Accessory

Monday May 4, 2026 8:13 am PDT by
Apple today released a new Pride Edition Sport Loop for the Apple Watch. The band features a rainbow design with 11 colors of woven nylon yarns. The new Pride Edition Sport Loop is available to order now on Apple.com and in the Apple Store app in 40mm, 42mm, and 46mm sizes, and it will be available at Apple Store locations starting later this week. In the U.S., the band costs $49. There...
iOS 27 on iPhone 17 1

iOS 27 Will Add These New Features to Your iPhone

Saturday May 2, 2026 8:43 am PDT by
Apple is expected to unveil iOS 27 during its WWDC 2026 keynote on June 8, and there are already many rumored features and changes for iPhones. The first developer beta of iOS 27 will likely be available immediately following the keynote, and a public beta typically follows in July. Following beta testing, the software update should be released to all users with a compatible iPhone in...
Apple Announces 2026 Pride Band Watch Face and iPhone Wallpaper Article 2

iOS 26.5 Coming Soon With These New Features

Monday May 4, 2026 8:40 am PDT by
iOS 26.5 is expected to be released next week, following more than a month of beta testing. The update is relatively minor, but there are a couple of new features and changes across the operating system that we have recapped below. iOS 26.5 lays the groundwork for end-to-end encryption for RCS in the Messages app and ads in the Apple Maps app, and it will include a new Pride wallpaper and a...

Top Rated Comments

NT1440 Avatar
68 months ago

How about it just charges as much and as fast as possible when I plug it in?
Because that decreases the overall lifespan of the battery. This is a feature for macs that are plugged in most of the time. It prevents it from being charged fully all the time which is also bad for lithium based batteries.

If you use it unplugged frequently it will do exactly what you’re expecting, but this article is discussing a subset feature of Battery Optimization which is different from your use case.
Score: 19 Votes (Like | Disagree)
Neberheim Avatar
68 months ago
I’ve been waiting for this. I hope that iOS will get a similar feature using the sleep/wake alarm.



How about it just charges as much and as fast as possible when I plug it in?
Like it does when you turn optimizing charging off?
Score: 10 Votes (Like | Disagree)
itsmeaustend Avatar
68 months ago

Sigh...only on MacRumors....
What, a logical response?
Score: 9 Votes (Like | Disagree)
68 months ago

I’ve never needed this and never will. I’m good at charging my mac. Apple believes they still own the device and can do whatever they like with the software and hardware even after you bought it.
The 99% of other people, will benefit from things like this.
Score: 7 Votes (Like | Disagree)
BeefCake 15 Avatar
68 months ago

I’ve never needed this and never will. I’m good at charging my mac. Apple believes they still own the device and can do whatever they like with the software and hardware even after you bought it.
Whatchu talking about Willis?!
Score: 6 Votes (Like | Disagree)
68 months ago

I’ve mentioned before, I wish i could manually control when my iPhone, iPad, MacBook Pro charges.
Wait let me try this....Ahem " Der you mean like when you connect it to a charger? Hardy Har Har..."
Score: 6 Votes (Like | Disagree)
Related Apple News: Opinion | South Africa | Reviews | News | World News