The battery life of an Apple MacBook is something that PC laptop users dream about. It's normal for MacBook Air users to get 12 hours on a single charge, and MacBook Pro users should get several hours, even if the laptop is a few years old. But, the battery life will get worse over time. There is nothing that anybody can do to prevent that. The issue comes when it is time to replace the battery. They are not designed to be replaceable by members of the public, which makes some people think that they are not replaceable at all.
That's not true. The battery in a MacBook, whether it's a MacBook Pro or Air, can be replaced with a new model and many more years use can be had.
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How to tell if you need a new Mac battery
The fastest way to check if your MacBook is in need of a new battery is to go to the top of your screen and click on the Apple menu > and then System Settings, then click Batteryin the sidebar.
Look at Battery Health. It should show one of these conditions
- Normal: The battery is functioning normally.
- Service Recommended: The battery is performing normally, but its ability to hold a charge is less than when it was new. You may want to consider replacing the battery.
- Replace Soon: This is similar to Service Recommended, and means that the system has determined that the battery is not able to hold a good-enough charge.
- Replace Now: The battery is not able to supply the computer with enough power when not plugged into the mains. You should replace the battery in your computer.
Please Note: Apple disables the Battery Health information for batteries third-party batteries. The batteries, especially if purchased from a reputable company, may be as good as the Apple batteries, but Apple does not show the information.
Battery Cycles
Use of your MacBook battery is counted in the form of charge cycles. A charge cycle means using all of the battery's power, but that doesn't necessarily mean a single charge. For instance, you could use your MacBook for an hour or more one day, using half its charge, and then recharge it fully. If you did the same thing the next day, it would count as one charge cycle, not two, so it may take several days to complete a cycle.
Batteries have a limited amount of charge cycles before they are considered to be consumed. Once consumed, a replacement battery is recommended. You can use your battery after it reaches its maximum cycle count, but you may notice a reduction in your battery life. Knowing how many charge cycles are on your battery and how many are left can help you determine when a battery replacement is required. For optimal performance, replace your battery before you reach the maximum cycle count.
Identify Your MacBook
If you are not sure which type of MacBook you have, we have some information pages which can help. Or you can send us the serial number of your Mac using our contact form and we can let you know what type of Mac you have, and what your optons are for a battery replacement.
Locate your serial number, model identifier, and part number
You can find the serial number and other identifiers for your MacBook in macOS, on the computer's surface, and on its packaging.
In the About This Mac window
With most versions of macOS, you can find your computer's serial number and model information in the About This Mac window.
Choose Apple () menu > About This Mac. The window that appears lists your computer's model name — for example, MacBook Pro (13-inch, 2016, Four Thunderbolt 3 ports) — and serial number. Your serial number can really help SimplyFixIt to offer you personalised advice on repairs or upgrades for your model.
You can also use your computer's model identifier to get more information. In the About This Mac window, click System Report. In the System Information window that opens, find Model Identifier in the Hardware Overview section. Then use the identifier to locate your MacBook below.
On the surface of your MacBook
Close your MacBook and turn it over. The serial number is on the underside of the computer, near the regulatory markings.
On the original product packaging or receipt
If you still have the original packaging for your MacBook, you can find the serial number on a barcode label on the box.
Check your Serial Number for free.
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To book a replacement battery for your MacBook, just click on the option below. Once the repair has been booked, you will receive information on how to send your MacBook to us, or if you live close to Edinburgh, how to drop your computer in. Repairs are normally carried out within 48 hours, and then we will ship it back to you by courier.
Please note that these are third party batteries, operating to the same specification as the Apple ones. We can supply Apple batteries for any Apple Silicon MacBook (2020 or later), but be aware that Apple glues their batteries to the underside of the keyboard, so the entire keyboard, palm rest and battery are replaced. This does make the repairs more expensive than we'd prefer, but Apple don't make the battery available to us in any other form.
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MacBook Air 15-inch 'M4' A3241 (2025) Battery Replacement (Original Specification)
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MacBook Pro 13-inch 'M2' A2338 (2022) Battery Replacement (Original Specification)
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MacBook Pro 13-inch A1708 (2016-2017) Battery Replacement (Original Specification)
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MacBook Pro 14-inch 'M3 Pro/Max' A2918/A2992 (2023) Battery Replacement (Original Specification)
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MacBook Pro 16-inch 'M1 Pro/Max' A2485 (2021) Battery Replacement (Original Specification)
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