Do AirTags need charging?
No. AirTags do not need charging in the way an iPhone, Apple Watch, or AirPods case does. Instead, Apple uses a user-replaceable CR2032 battery, so the process is much simpler: when the battery runs low, you swap it for a new one.
That remains true for the current AirTag lineup as well. Even though Apple now sells AirTag (2nd generation), the battery concept is still the same: AirTag is designed around a replaceable coin cell, not a rechargeable battery system.
What battery does an AirTag use?
AirTag uses a CR2032 lithium 3V coin battery. Apple’s current product and support documentation describe it as a user-replaceable battery, which is why you do not need any charging cable, MagSafe puck, or wireless charging pad for an AirTag.
In real life, that makes AirTag much lower maintenance than many people expect. You simply use it until the battery gets low, then replace the battery in a few moments.
How long does an AirTag battery last?
Apple says AirTag is designed to work for more than a year on a standard replaceable battery. However, actual battery life can vary depending on usage, environmental conditions, and the specific battery manufacturer.
That means it is better to think of AirTag battery life as “roughly over a year” rather than treating it like a fixed 12-month promise. Heavy use of sound playback or other features can affect real-world results.
How do you know when the battery is low?
Apple says your iPhone can show a low battery notification when the AirTag battery is running low. You can also open the Find My app, tap Items, select the AirTag, and check whether Low Battery appears under its name.
So in practice, you do not need to guess when it is time for a replacement. AirTag is designed to alert you when the battery is getting low.
How to replace the battery in an AirTag
Replacing the battery is simple:
- Press down on the polished stainless steel battery cover.
- Rotate it counterclockwise until it stops.
- Remove the cover and the old battery.
- Insert a new CR2032 lithium 3V battery with the positive side facing up.
- Listen for the sound that confirms the battery is connected.
- Put the cover back on, align the three tabs with the three slots, and rotate it clockwise until it stops.
It is also worth remembering that AirTag, the battery, and the battery cover should be kept away from small children, because coin batteries can present a serious ingestion hazard.
Which CR2032 batteries work with AirTag?
The safe baseline answer is simple: use a CR2032 lithium 3V coin battery. But there is one important detail in Apple’s support guidance. Apple recommends using a bitterant-coated CR2032 battery to help discourage accidental ingestion by children.
At the same time, Apple also notes that some bitterant-coated CR2032 batteries may not work with AirTag. Because of that, Apple advises choosing one labeled “Compatible with Apple AirTag.”
So the most practical advice is this: buy the correct battery type, and if you choose a bitterant-coated version, make sure the packaging specifically says it works with AirTag.
Does the new AirTag change this?
Not in the way that matters for this question. Apple introduced AirTag (2nd generation) in 2026, but the battery approach remains the same: it still uses a replaceable CR2032 battery rather than a rechargeable built-in cell.
So while the AirTag lineup is more current than many older articles suggest, the answer to the charging question has not really changed: you replace the battery instead of charging the device.
Bottom line
If you were looking for the simplest possible answer, here it is: AirTags do not need charging. They use a replaceable CR2032 battery, Apple says that battery is designed to last for more than a year, and when it runs low, your iPhone can alert you so you know it is time to replace it.
FAQ
Are AirTags rechargeable?
No. AirTags are not rechargeable. They use a replaceable CR2032 coin battery instead.
Can I use any CR2032 battery in an AirTag?
You should use a CR2032 lithium 3V coin battery, but be careful with bitterant-coated cells. Some may not work with AirTag, so it is best to choose one labeled as compatible with Apple AirTag.
How do I know when to replace the battery?
Your iPhone can show a low-battery alert, and the Find My app can display Low Battery under the AirTag’s name.
