The best AirTag battery is the CR2032 coin cell. These are standard, readily available lithium coin batteries that power your AirTag for about a year under normal use. Replacing them is simple and ensures your tracker keeps working to help you find your belongings.
Your Go-To Guide for the Best AirTag Battery: Essential Choices
Losing your keys, wallet, or bag can be a real headache. That’s where Apple’s AirTag shines, acting like a tiny beacon to help you locate your misplaced items. But what happens when your AirTag stops sending its signal? It’s usually because the battery needs changing!
Don’t worry, this isn’t a complicated tech job. Figuring out the right battery and how to swap it out is easier than you think. This guide will walk you through everything you need to know about AirTag batteries, making sure your tracker is always ready to help.
We’ll cover which battery is the right choice, how to change it yourself, and tips to keep your AirTag powered up and working smoothly. Let’s get your AirTag back in action!
Understanding Your AirTag’s Power Source
At its heart, an AirTag is a small, clever device that uses Bluetooth to communicate with your Apple devices. To do this continuously, it needs a reliable power source. For the AirTag, this comes in the form of a small, circular battery.
Apple designed the AirTag to use a very common type of battery found in many small electronics. This makes it convenient for users because you don’t need to hunt for a special or hard-to-find power source.
The key to keeping your AirTag working is ensuring it always has a fresh battery when needed. We’ll dive into the specifics of this battery right now.
The Best AirTag Battery: The Mighty CR2032
When we talk about the “best AirTag battery,” we’re talking about the most suitable and readily available option. For your Apple AirTag, that is the CR2032 coin cell battery.
These batteries are:
- Lithium-based, offering long life and stable voltage.
- Circular, about the size of a US quarter, but much thinner.
- Marked with “CR2032” – this code tells you their specifications: “C” for lithium, “R” for round shape, and “2032” for their dimensions (20mm diameter, 3.2mm thickness).
They are the standard choice for AirTags because they offer a good balance of power, longevity, and size. You’ll find them in many common household items, like car key fobs, digital scales, and watches.
Why CR2032 is the Gold Standard for AirTags
Apple specifically chose the CR2032 for several practical reasons:
- Availability: You can buy CR2032 batteries almost anywhere – supermarkets, drugstores, electronics stores, and online.
- Lifespan: Under normal usage conditions, a CR2032 battery can power your AirTag for about a year. Actual battery life can vary based on how often your AirTag is used to locate items, its environment, and other factors.
- Voltage and Power: They provide a steady 3-volt output, which is perfect for the low-power requirements of the AirTag’s Bluetooth and security chip.
- Cost-Effective: Compared to specialized batteries, CR2032s are generally affordable, especially when bought in multi-packs.
Choosing a Quality CR2032 Battery
While all CR2032 batteries are designed to the same physical specifications, not all brands are created equal. For your AirTag, opting for a reputable brand can make a difference in performance and longevity.
Look for well-known battery manufacturers. Brands like Energizer, Duracell, Panasonic, and Varta are often good choices. These brands tend to have better quality control, ensuring consistent performance and a reliable charge.
Avoid unbranded or suspiciously cheap batteries. They might not last as long, could leak, or may not provide the stable power your AirTag needs. Think of it as investing in the reliability of your tracking.
A Note on “Child-Resistant” Coatings
You might notice some CR2032 batteries have a bitter, child-resistant coating on them. This coating is designed to prevent accidental ingestion by children. While it’s a great safety feature for a battery, it can occasionally cause issues with some devices.
Some users have reported that the coating can interfere with battery contact in certain devices, including AirTags. If you encounter problems with a new battery, especially if it’s coated, you might want to try a CR2032 from a different brand without this coating. However, for most, these batteries work just fine.
Replacing Your AirTag Battery: A Step-by-Step Guide
Swapping out your AirTag’s battery is a straightforward process. You won’t need any special tools, just a little patience. Here’s how to do it:
What You’ll Need
- A new CR2032 lithium coin cell battery (a quality brand is recommended)
- Your AirTag
- A clean, flat surface to work on
The Simple Steps
Follow these instructions carefully:
- Prepare Your AirTag: Take your AirTag and place it on a flat surface with the white, unprinted side facing up.
- Press and Twist the Cover: Gently press down on the stainless steel battery cover with your thumb and index finger. While pressing down, twist the cover counter-clockwise (to the left). You might need to apply a bit of firm pressure.
- Remove the Cover: Once you feel it loosen, you can lift the cover off. You’ll see the battery inside.
- Remove the Old Battery: Carefully tip the AirTag or use your fingertip to gently lift out the old CR2032 battery. Be mindful not to bend any internal components.
- Insert the New Battery: Take your new CR2032 battery. Notice the polarity (+ and -). The positive side, usually marked with a “+” symbol and often the larger surface, should be facing up. Place the new battery into the compartment, ensuring it sits flat.
- Replace the Cover: Align the three tabs on the stainless steel cover with the corresponding slots on the AirTag.
- Twist to Secure: Press the cover down firmly and twist it clockwise (to the right) until it stops. You should feel it click or firmly seat into place.
- Test Your AirTag: Once the cover is secured, your AirTag should emit a sound, indicating it has power and is ready to be paired or used. If it doesn’t make a sound, double-check that the battery is correctly inserted and the cover is securely fastened.
It’s that simple! In just a few minutes, you’ve restored power to your AirTag.
When Do You Likely Need to Replace the Battery?
Your iPhone will usually let you know when your AirTag’s battery is getting low. You’ll typically see a notification on your device indicating that the battery level is critically low.
Beyond notifications, you might notice your AirTag has trouble connecting or maintaining a connection with your devices. If you try to ring your AirTag and it doesn’t make a sound, or if it’s consistently showing as “offline” in the Find My app, it’s a strong sign the battery is dead.
As a general rule, plan to replace the battery about once a year. This proactive approach ensures your AirTag is always ready when you need it most.
AirTag Battery vs. Other Power Sources: A Quick Comparison
It’s helpful to see how the AirTag battery fits into the world of power solutions. While the CR2032 is specific to the AirTag’s needs, other power sources serve different purposes.
| Power Source Type | Primary Use Case | Technology | Typical Lifespan/Charge | AirTag Compatibility |
|---|---|---|---|---|
| CR2032 Coin Cell | Small portable electronics (AirTags, key fobs, watches, calculators) | Lithium | ~1 year for AirTag | Primary and Recommended |
| AA/AAA Batteries | Remote controls, toys, flashlights, some wireless mice | Alkaline, NiMH (rechargeable) | Hours to months (depending on device draw) | Not compatible |
| Phone Batteries | Smartphones, tablets | Lithium-ion | 1-2 years of peak performance before degradation | Not compatible (internal to phone) |
| Car Batteries | Starting and powering vehicles | Lead-acid | 3-5 years on average | Not compatible |
| Power Banks | Recharging smartphones, tablets, and other USB-powered devices | Lithium-ion | Multiple recharges per charge, variable capacity | Not compatible (for powering the AirTag itself) |
As you can see, the CR2032 is a specialized solution for the specific power needs and size constraints of a device like the AirTag. It’s not meant for high-drain devices or long-term power storage like a power bank, but it’s perfectly suited for its job.
Best Practices for AirTag Battery Management
Keeping your AirTag running smoothly involves a few simple best practices:
- Use Reputable Brands: As mentioned, stick to well-known battery manufacturers for your CR2032 replacements to ensure quality and reliability.
- Store Batteries Properly: If you buy batteries in bulk, store them in a cool, dry place away from direct sunlight. Don’t store them loose with metal objects like coins or keys, as this can cause them to short-circuit.
- Check Battery Status Regularly: Keep an eye on the battery level in your Find My app. This allows you to replace the battery proactively before it dies unexpectedly.
- Dispose of Old Batteries Responsibly: Many retailers offer battery recycling programs. Lithium coin cells should not be thrown in regular trash due to potential environmental impact. You can often find drop-off points at electronics stores or hazardous waste collection sites. For more on battery disposal, check out the EPA’s guidance on recycling household batteries.
- Handle With Care: When replacing the battery, try to avoid touching the flat surfaces of the new battery with your bare fingers. Oils and moisture from your skin can potentially affect its conductivity over time.
Troubleshooting Common AirTag Battery Issues
While AirTag battery replacement is usually trouble-free, you might occasionally run into a small hiccup. Here are a few common issues and their solutions:
Issue 1: AirTag Doesn’t Make a Sound After Battery Replacement
Possible Causes:
- The battery is inserted incorrectly (polarity reversed).
- The battery isn’t making good contact.
- The battery is dead or not functioning properly.
- The circular cover isn’t fully secured.
Solutions:
- Open the AirTag again and ensure the “+” side of the battery is facing up.
- Make sure the battery is seated flat and touching the contacts on both sides. Sometimes a slight push can help.
- Try a different, known-good CR2032 battery from a reputable brand.
- Re-attach the cover, pressing down firmly and twisting until it clicks or feels secure.
Issue 2: AirTag Still Shows as “Low Battery” After Replacement
Possible Causes:
- The new battery might be faulty.
- The AirTag’s software is showing an old reading.
- The battery contacts are dirty.
Solutions:
- Remove and re-insert the battery.
- Try a third CR2032 battery to rule out a faulty batch.
- Wait a few minutes. Sometimes it takes a moment for the AirTag to re-establish its connection and transmit the new battery status. If the issue persists after a day, try contacting Apple Support.
Issue 3: Difficulty Opening or Closing the AirTag Battery Cover
Possible Causes:
- Not enough pressure applied when twisting.
- The tabs on the cover are not aligned correctly with the AirTag.
- Dirt or debris affecting the mechanism.
Solutions:
- When opening, ensure your fingers have a good grip, press down firmly, and twist deliberately. A rubber grip or a soft cloth can sometimes help improve traction on the cover.
- When closing, carefully line up the small metal tabs on the cover with the corresponding slots on the AirTag before pressing and twisting.
- Make sure the area around the battery compartment is clean.
For further official guidance on AirTag troubleshooting, Apple’s support pages are an excellent resource, often providing detailed instructions and solutions for various issues: Apple’s official AirTag support page.
Frequently Asked Questions About AirTag Batteries
Here are answers to some common questions beginners have about their AirTag batteries:
Q1: Can I use any coin battery for my AirTag?
A: No, you should specifically use the CR2032 lithium coin cell battery. This is the only type designed to fit and power your AirTag correctly. Using other types could damage the device or simply not work.
Q2: How long does an AirTag battery really last?
A: Apple states that CR2032 batteries typically last about a year under normal use. Factors like how often your AirTag is used in Lost Mode or how far your devices are from it can affect this lifespan.
Q3: My iPhone says the battery is low, but I just replaced it. What should I do?
A: First, try removing and re-inserting the new battery, ensuring correct polarity and a firm connection. If it still shows low, try a different CR2032 battery from a trusted brand. Sometimes, it can take a little while for the AirTag to update its status in the Find My app.
Q4: Can I recharge my AirTag battery?
A: No, the CR2032 battery used in AirTags is a disposable battery and cannot be recharged. Once it’s depleted, it needs to be replaced with a new one.
Q5: Are there any safety concerns when changing the battery?
A: Yes, the CR2032 battery is small and could be a choking hazard if swallowed. Keep them away from young children. Also, ensure you dispose of old batteries responsibly. Some newer CR2032 batteries have a bitter coating for child safety, which might cause minor issues with contact in some devices, though they usually work fine.
Q6: What should I do with used AirTag batteries?
A: It’s best to recycle used batteries. Do not throw them in the regular trash. Look for battery recycling drop-off locations at electronics stores, supermarkets, or local waste management facilities.
Conclusion: Keeping Your AirTag Powered for Peace of Mind
You’ve now got a clear understanding of the best battery choice for your Apple AirTag: the reliable CR2032 coin cell. It’s readily available, offers a good lifespan, and is easy to replace, ensuring your AirTag is always ready to help you keep track of what matters most.
Remember, keeping your AirTag powered is as simple as swapping out this common battery about once a year, or when your iPhone alerts you. By following the straightforward steps we’ve outlined and choosing quality battery brands, you can maintain the peace of mind that comes with knowing your belongings are locatable.
Don’t let a dead battery leave you searching in vain. With this knowledge, you’re empowered to easily manage your AirTag’s power, ensuring it continues to be a valuable tool in your everyday life. Happy tracking!