How to Replace MacBook Air Battery: A Step-by-Step Guide

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How to Replace MacBook Air Battery: A Step-by-step Guide

If you’re a MacBook Air user, you are well aware of the importance of battery life. For many of us, our Macs are our lifelines, and having a weak or dying battery can put a serious wrench in our daily routine. Fortunately, replacing the battery in your MacBook Air is a relatively simple process that anyone can accomplish. In this guide, we’ll provide you with a step-by-step guide to replacing your MacBook Air battery, as well as some tips to ensure battery longevity.

Preparing for Battery Replacement

Before you get started with replacing your MacBook Air battery, there are a few essential steps you need to take to prepare.

Essential Tools Required

You will need a screwdriver, namely a pentalobe screwdriver, to unscrew the case. Additionally, having a spudger or plastic card for opening the case and a tri-wing screwdriver for disconnecting the battery can also be helpful.

Back up Data and Files

Before you replace the battery, back up all important data and files. This ensures that you don’t lose any valuable information during the battery replacement process.

Fully Charged Backup and Main Battery

Make sure your primary battery is fully charged before performing the replacement. It is also a good idea to have a backup battery charged in case of any unforeseen problems or complications.

Shut down MacBook and Unplug from Power Source

Before opening up your MacBook Air, shut down your computer and unplug it from the power source. This ensures that there are no electrical issues during the replacement process.

Steps to Remove the Old Battery

The next step is to remove the old battery from your MacBook Air.

Opening the MacBook

Using a plastic card or spudger, carefully open the bottom cover of the MacBook Air.

Removing the Bottom Case

Once you’ve opened the MacBook Air, remove the bottom case by unscrewing the screws at each corner of the case.

Disconnecting the Battery Connector

Using the tri-wing screwdriver, disconnect the battery connector from the motherboard.

Unscrewing the Battery Screws

Unscrew the screws that are holding the battery in the MacBook Air.

Taking out the Old Battery

Gently lift the old battery out of the MacBook Air.

Installing the New Battery

Now that you’ve removed the old battery, it’s time to install the new one.

Aligning and Securing the New Battery in Place

Insert the new battery into the MacBook Air and align it in the correct position. Screw the brackets down to secure the battery in place.

Reconnecting the Battery Connector

Reconnect the battery connector to the motherboard using the tri-wing screwdriver.

Securing the Screws

Reattach all screws ensuring they are tight and snug.

Replacing the Bottom Case

Replace the bottom case, being careful to make sure everything is aligned correctly.

Closing the MacBook

Close the MacBook and make sure the case is snug and secure.

Final Steps

Now that the battery is installed, it’s time to perform some final steps to ensure everything is working as it should.

Start-up MacBook and Test New Battery

Turn on your MacBook Air and test the new battery to make sure it is functioning correctly. You can see the battery percentage in the top-right corner of your screen.

Reset SMC and NVRAM

Resetting the System Management Controller (SMC) and Non-Volatile Random Access Memory (NVRAM) can help ensure everything is running smoothly.

Calibrate the New Battery

Calibrating the new battery can help ensure that it reaches its full potential lifespan.

Tips to Ensure Battery Longevity

Reducing Screen Brightness and Contrast

One of the most significant drains on your MacBook Air’s battery life is screen brightness and contrast. Set your screen brightness to a level you find comfortable but not too bright.

Limiting the Number of Apps Open at a Time

By limiting the number of apps open at once, you will help preserve your MacBook Air’s battery life.

Disabling Unnecessary Applications

Disabling unnecessary applications can help conserve your battery power.

Dimming the Backlight of the Keyboard

Reducing the brightness of your keyboard backlight can also help conserve battery life.


In conclusion, replacing the battery on your MacBook Air is a relatively simple process, and with these instructions, you’ll be able to do it all on your own, saving you time and money.

Benefits of Replacing the Battery Oneself

Not only is it cost-effective to replace the battery yourself, but it gives you the confidence to open your MacBook Air and perform simple maintenance tasks.

Remember, to ensure your MacBook Air’s battery life is as long as possible, take care of it by reducing screen brightness, limiting the number of apps open, disabling unnecessary applications, and dimming the backlight of the keyboard.


Q: Is it safe to replace my MacBook Air’s battery myself?

A: Yes, it’s completely safe to replace your MacBook Air’s battery by yourself while following the necessary instructions.

Q: How often do I need to replace my MacBook Air’s battery?

A: The lifespan of MacBook Air’s battery lasts about 3 to 5 years, depending on usage and quality of the battery.

Q: Does replacing my MacBook Air’s battery void my warranty?

A: Apple does not recommend users to replace MacBook Air’s battery on their own or third-party repair stores if the device is still under warranty. In such cases, seeking help from Apple or Authorized Service Providers is recommended.