Why My MacBook Not Charging Past 80%? – Causes & Fixes

Sometimes MacBook users face charging-related issues due to incorrect settings and minor hardware faults.

Is your MacBook not charging past 80% even when the charger is attached?

Don’t worry – It’s not a fault; rather, it’s a feature to extend your battery health.

Yes, you heard it right!

It’s a feature that Apple introduced in macOS Big Sur. Apple says it- Optimised Battery Charging.

Optimized Battery Charging is a new feature Apple introduced in macOS Big Sur.

It is designed to extend the lifespan of your MacBook’s battery by learning your daily charging routine.

All MacBooks running on macOS Big Sur or later have Optimised Battery Charging enabled by default.

If you want to charge your MacBook fully because you’ve to travel somewhere, then you can force your MacBook to charge fully.

Also Read: How To Fix MacBook Pro Not Charging

Why Is My MacBook Not Charging Past 80?

MacBook Battery Not Charging Past 80

Your MacBook battery is not charging to 100% because Optimised Battery Charging is enabled. This feature is available in macOS Big Sur or later versions of macOS.

But there could be many other reasons too that stop the MacBook battery from charging fully. Other reasons could be overheating, faulty adapter, broken cable, or degraded battery health.

How To Force Your MacBook To Charge Fully?

Do you want to force your MacBook to charge 100%? You can disable Optimised Battery Charging feature from System Preferences.

Follow these steps to force your MacBook to charge fully-

1- Open Launchpad

Click on Launchpad in the Apple Doc & Menu Bar.

Disable Optimised Battery Charging on MacBook 1

2- Click On System Preferences

From the apps list, click on ‘System Preferences.’

Disable Optimised Battery Charging on MacBook 2

3- Click on the Battery icon

Inside the System Preferences, click on the ‘Battery‘ icon.

Disable Optimised Battery Charging on MacBook 3

4- Click on Battery

You’ll see the Usage History, Battery, Power Adapter, and Schedule options in the left bar navigation when you open the battery settings. Click on the ‘Battery.’

Disable Optimised Battery Charging on MacBook 4

5- Untick Optimised Battery Charging

You’ll see that Optimised Battery Charging feature is by default enabled. Just untick the option to disable it.

Disable Optimised Battery Charging on MacBook 5

6- Click on Turn Off

When you untick the Optimised Battery Charging option, Apple will ask to confirm the action in a pop-up window. Just click on ‘Turn Off Until Tomorrow‘ or ‘Turn Off.

Disable Optimised Battery Charging on MacBook 6

That’s it! You have successfully disabled the Optimised Battery Charging feature on macOS, and now you can charge your MacBook to 100%.

However, Apple recommends enabling this feature because charging a Li-ion battery to its full capacity drains the lifespan.

If you ever change your mind, just follow the same steps System Preferences> Battery> Optimised Battery Charging and enable it.

Also Read: Why is My MacBook Charger Overheating

How do I check the battery health on my MacBook?

MacBook Battery Health

With time, all Li-ion batteries degrade, and so does your MacBook battery. It is essential to keep a regular check on the health of your MacBook’s battery because it’s another reason why your MacBook will face charging issues.

Follow these steps to check MacBook Battery Health

  1. Open Launchpad
  2. Click on System Preferences.
  3. Click on Battery.
  4. Click on Battery Health.

You may need to go for battery replacement once the Battery Health drops below 70.

If your MacBook has Apple Care+, the service center will replace the battery at no cost.

Also Read: How To Charge MacBook Pro Without Charger

When should I replace the MacBook battery?

MacBook batteries are designed to function properly up to 1000 charge cycles.

It may last for approx 4 to 5 years (depending upon your usage). If you’re a heavy user, you may need to go for battery replacement within two or three years.

Here are a few signs that indicate the MacBook battery needs replacement-

  1. Your MacBook is running out of power too quickly.
  2. The MacBook is not charging at all or charging very slowly.
  3. MacBook’s Battery Health has decreased below 70%.
  4. MacBook gets extremely hot while charging.

If you ever face any of these MacBook battery issues, it’s time to go for battery replacement.

Also Read: How To Fix MacBook Air That Won’t Charge

Should I shut down my Mac every night?

It’s not necessary to shut down your MacBook every night. MacBooks are designed to go into sleep mode when inactive for a particular time.

When MacBooks are in sleep mode, it uses very less power, and all your unsaved work is stored safely in the RAM.

However, shutting down a MacBook every night is beneficial because it saves battery health.

Conclusion

MacBook battery not charging 100% is a common problem many Mac users reported.

It happens because of the Optimised Battery Charging feature in macOS. You can disable this feature if you want your MacBook to charge fully.

It’s essential to keep checking MacBook Battery Health regularly as it degrades with time.

If you ever face any MacBook charging issues, feel free to contact Apple Support.

About Daniel

Daniel is a tech enthusiast and repair technician who loves experimenting with various gadgets and home appliances. On this blog, he shares a troubleshooting guide for software and hardware faults.

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