MacBook Battery Finder — Find the Right Battery for Your Mac - Macfixit Australia
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MacBook Battery Finder — Find the Right Battery for Your Mac - Macfixit Australia

MacBook Battery Finder — Find the Right Battery for Your Mac

Find your MacBook battery

Enter your Apple Model ID or A-number — or filter by screen size and year. Some A-numbers cover more than one model, so check the year to pick the exact match.

? How do I find my Mac’s A number?

How to Find Your MacBook’s A Number

The A number is printed on the underside of your MacBook’s bottom case. Flip it over and look for “Model A” followed by 4 digits.

1

Flip your MacBook over

Turn your MacBook upside down so the bottom case is facing up.

2

Find the model label

Look for the small text near the centre of the bottom panel. You’ll see “Model AXXXX” — the 4-digit number after the “A” is your A number.

MacBook bottom case showing the Model A number location
Pro tip: The A number on your bottom case is exactly what you type into the Battery Finder above. Enter it and we’ll find the right battery instantly.
Screen size
Year
No matching models. Check your spelling, or how to find your Model ID.
Recommended for Your Mac
High-quality replacement batteries and tools, tested for reliability and performance.
Most Popular
80 Piece Advanced Toolkit
80 Piece Advanced Toolkit
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  • Professional grade tools
  • For MacBook repairs & upgrades
  • Durable and long-lasting
View Toolkit →
Battery Replacement Kit
Tool Kit Set for Battery Replacement
Tool Kit Set for Battery Replacement
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  • Essential tools included
  • Perfect for battery replacement
  • Safe for your MacBook
View Toolkit →
Quality Guaranteed
Reliable tools and batteries you can trust.
Fast Shipping
Quick delivery across Australia.
Expert Support
Here to help with your repair journey.
MacBook Battery Installation Service
Professional Service Available
Not confident replacing it yourself? We’ll do it for you.

Our certified technicians at Macfixit Australia can replace your MacBook battery professionally. Mail your MacBook to us from anywhere in Australia — we’ll install, test, and ship it back within 1–2 business days.

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View Battery Installation Service →
Mac Battery Health Guide
Keep your Mac running at its best

When to Replace Your Battery

  • Maximum capacity below 80%
  • Cycle count approaching 1,000 (500 for older models)
  • Mac shuts down unexpectedly (often the battery — sometimes needs proper diagnosis)
  • Battery swelling (trackpad lifting)
  • Service Battery warning in menu bar
Battery100%
Service Recommended
Power Source: Battery
3hr 24min remaining
Battery Preferences…

How to Check Battery Health

  • macOS Ventura+: Apple menu → System Settings → Battery → Battery Health
  • Older macOS: Hold Option → click battery icon in menu bar
  • Detailed info: Apple menu → System Information → Power
  • Check cycle count and condition
Battery ConditionService Recommended
Mac batteries, like all rechargeable batteries, are consumable components that become less effective as they age.

Swollen Battery Warning

If your trackpad feels raised or the case appears warped — stop using the Mac immediately. A swollen lithium battery is a fire and safety hazard. Replace it as soon as possible.

Swollen MacBook battery pushing the trackpad out of the case

Tip: Extend Your Battery Life

Enable Optimised Battery Charging in System Settings → Battery. Delays charging past 80% when plugged in for extended periods, reducing degradation and extending overall lifespan.

Filed in: battery, battery finder, battery replacement, macbook, macbook air, macbook pro
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