TL;DR: AirTags don’t need charging because they’re not rechargeable. Instead, they use a replaceable CR2032 battery that typically lasts about one year under normal use before needing replacement.
Jump ahead to what you need:
- How long do AirTags last without charging?
- Does cold weather affect AirTag battery life?
- How to “charge” an AirTag (spoiler: you don’t)
- How to know when the battery is getting low
- Wrapping up
- FAQs
How long do AirTags last without charging
You just got your first AirTag, and now you’re probably wondering: how long does the battery actually last?
Well, the good news is that an AirTag battery usually lasts around one year, so you don’t have to think about replacing it very often.
Unlike rechargeable trackers, AirTags don’t need charging. Instead, they use a replaceable CR2032 battery that typically lasts about a year under normal use. So when people ask how long an AirTag lasts without charging, they’re really asking how long the battery lasts before it needs to be replaced.
Of course, actual battery life depends on how you use it. Apple’s one-year estimate is based on typical daily usage, like checking the location of your keys a few times a day and using Precision Finding once daily. If you’re constantly using Precision Finding throughout the day, the battery will drain faster.
Does cold weather affect AirTag battery life?
Yes, definitely. Like most devices that use lithium batteries, AirTags don’t perform as well in freezing temperatures.
For example, if your car is parked outside overnight during a freezing winter storm, the battery may not perform as efficiently as it normally would. Extremely cold temperatures can temporarily reduce battery performance and may make the battery seem to drain faster compared to normal room temperatures.
How to “charge” an AirTag (spoiler: you don’t)
A lot of people assume AirTags recharge through a USB cable or charging dock, but that’s actually not how they work.
AirTags use a small CR2032 3V lithium coin battery, similar to the batteries used in watches, car key fobs, and other small devices.
When the battery dies, replacing it is very simple:
- Grab your AirTag.
- Press down on the silver back cover with the Apple logo.
- Twist the cover counterclockwise until it pops open.
- Remove the old battery.
- Insert the new battery with the positive (+) side facing up.
- Place the cover back on and twist it clockwise until it locks into place.
Once the new battery is installed correctly, the AirTag will make a small sound confirming it’s working again.
After that, the low battery warning should disappear from your iPhone automatically.
✏️ Note: CR2032 batteries are easy to find at stores like Walmart, Target, CVS, Walgreens, Home Depot, or on Amazon. Apple doesn’t make its own version, so you can use any compatible CR2032 battery that meets the required specifications.
🤓 You might like: How to Replace an iPad Battery in Simple Steps
How to know when the battery is getting low
Nobody wants to lose their keys or wallet and suddenly realize the AirTag battery died days ago.
Thankfully, Apple gives you a warning before that happens.
Automatic notifications
Your iPhone will usually notify you when the AirTag battery starts getting low, giving you enough time to replace it before it completely dies.
💡 To get the most out of your iPhone with accessories like AirTags, it helps to have your device properly set up, including things like your hotspot name.
Manual battery check
If you want to check it yourself:
- Open the Find My app.
- Tap the Items tab.
- Select your AirTag.
If the battery is low, you’ll see a low battery warning under the AirTag name. If there’s no warning, the battery is still in good shape.
⚠️ Important: Some CR2032 batteries include a bitter coating designed to keep children from swallowing them. Certain coatings can interfere with the AirTag contacts and prevent the battery from working properly, even if it’s brand new.
Wrapping up
The nice thing about AirTags is that they’re designed to be simple and low maintenance. Most people only need to replace the battery about once a year, and the replacement itself only takes a minute or two.
So overall, it’s very much a “set it and forget it” type of device.
FAQs
Can I replace the AirTag battery myself?
Yes, and the process is actually very simple. Just press down on the metal back cover, twist it counterclockwise to open it, replace the CR2032 battery with the positive (+) side facing up, and close the cover again. You don’t need special tools and the whole process usually takes less than a minute.
Do I need to turn off my AirTag when not in use?
No. AirTags don’t have an on/off button because they’re designed to run continuously while using very little battery power.
If you ever want to disable one temporarily, you can simply remove the battery, but under normal use, there’s really no need to turn it off.
Can you track an AirTag from far away?
Yes, as long as there are nearby Apple devices around it.
AirTags use Apple’s Find My network, which anonymously uses nearby iPhones, iPads, and Macs to help update the AirTag’s location. That means you can often track an AirTag from very long distances, even if it’s in another city or state.
What is the downside of Apple AirTags?
One of the main downsides is that AirTags work best within the Apple ecosystem, so you need an iPhone or another Apple device to set them up and use all their features properly.
They also rely on Apple’s Find My network rather than built-in GPS, so location updates depend on nearby Apple devices.
Another thing to keep in mind is that AirTags don’t include a built-in keyring hole, so most people end up buying a separate accessory to attach them to keys, backpacks, or luggage.
And while the battery lasts around a year, you’ll eventually need to replace it yourself.
Last Updated on June 30, 2026
