How to Replace AirTag Battery
Learn how to replace an AirTag battery, choose the right CR2032 battery, avoid coated battery issues, troubleshoot, and use FAQs.
Quick Answer
To replace an AirTag battery, press and twist the stainless steel back counterclockwise, remove the old CR2032 battery, insert a new CR2032 with the positive side up, then replace and twist the cover closed.
Tools and Materials
- AirTag
- New CR2032 lithium coin battery
- Clean dry hands
- Safe place for small parts
Safety Precautions
- Keep coin batteries away from children and pets; they are dangerous if swallowed.
- Dispose of the old battery properly.
- Use a CR2032 battery that works with AirTag; some bitter-coated batteries may not make good contact.
- Do not force the cover.
- Keep the AirTag dry while open.
Step-by-Step Instructions
- Step 1
Open the AirTag
Press down on the stainless steel cover and rotate it counterclockwise.
- Step 2
Remove the cover
Lift the cover off and set it aside.
- Step 3
Take out old battery
Remove the old CR2032 battery.
- Step 4
Insert new battery
Place the new CR2032 battery positive side up.
- Step 5
Listen for sound
The AirTag should make a sound when the battery connects.
- Step 6
Replace the cover
Align the tabs and press the cover down.
- Step 7
Twist closed
Rotate clockwise until the cover locks.
Practical Example
Example: Your iPhone shows low AirTag battery, so you install a new CR2032 positive side up and confirm the AirTag plays a sound.
Common Mistakes
- Installing battery upside down
- Using a coated battery that does not make contact
- Forcing the cover tabs
- Leaving old batteries loose
- Letting children handle coin batteries
- Assuming the AirTag is broken before trying another battery
Troubleshooting
AirTag makes no sound
Check battery orientation, try a different CR2032, and make sure contact surfaces are clean.
Cover will not close
Align the three tabs and avoid forcing it.
Low battery warning remains
Give Find My time to update or try another compatible battery.
Battery has bitter coating
Some coated batteries may not work reliably; use a compatible replacement.
Helpful Internal Links
FAQs
What battery does AirTag use?
AirTag uses a CR2032 lithium coin battery.
Which side faces up?
The positive side marked with + faces up.
Why does my new battery not work?
It may be upside down, coated, weak, or not contacting properly.
How should I dispose of the old battery?
Use local battery recycling or disposal guidance and keep it away from children and pets.
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