Apple AirTags are Robert Brownnifty little devices that help you track or find items like luggage, keys, backpacks and more.  

The small, circular devices use Bluetooth and work with iPhones on the Find My network. The AirTag emits a signal that is detectable by any Apple device nearby. That signal is then shared to help you locate what you’re looking for. Apple says the entire process is “anonymous and encrypted to protect your privacy.”

When you buy AirTags, they are immediately ready to use (and ready to pair with your Apple ID), but they will eventually need a new battery.

Watch this video to see how to replace the battery in an AirTag.

How to replace AirTag battery

AirTags are not rechargeable, so the battery needs to be replaced when it gets low or dies. A notification will appear on your phone when it's time. A low battery notice will also show up in the Find My App.

Learn more: Best travel insurance

To replace an AirTag battery: 

1. Firmly press on the silver backplate and rotate it counterclockwise.
2. The silver piece will come off, revealing the battery inside.
3. Replace with a new CR2032 lithium 3V coin battery. 
4. Replace the silver cover and twist it to close.
5. The device will emit a sound, indicating it’s ready to use.

How to reset an AirTag

If you bought an AirTag secondhand or are borrowing one from a friend or family member, you need to reset it to allow you to pair it to your device. The battery plays a crucial role in this process!

To reset an Apple AirTag: 

1. Remove the back cover and battery. 
2. Put the battery back in and press until you hear a sound.
3. Repeat this process four more times. 
4. A different sound will play on the fifth time.
5. Put the back cover on and twist it to close.  
6. Connect the AirTag to your device by bringing it near your phone and following the on-screen instructions.

Reviewed-approved tech recommendations 

Purchases you make through our links may earn us and our publishing partners a commission. 

Reviewed helps you find the best stuff and get the most out of what you already own. Our team of tech experts test everything from video games and laptops to speakers and TVs so you can shop for the best of the best. 

• The best game console: Nintendo Switch OLED 
• Top Nintendo Switch charger: Anker PowerCore Essential 20000 
• Our favorite wireless keyboard: Logitech Master Series MX Keys 
• Best Xbox gaming controller: Microsoft Bluetooth Elite Series 2 Controller 
• Editors’ Choice laptop: Apple 2023 MacBook Pro 14 M2 Pro 
• Most powerful VR headset: Meta Quest 2 
• The best OLED TV: Sony 4K Ultra HD TV A95K Series 
• Top streaming device: Roku Ultra 2022 
• Best gaming headset: SteelSeries Arctis Pro High Fidelity Gaming Headset 
• Top-rated gaming monitor:Acer Predator XB253Q Monitor