AirTag Battery Size: How To Check And Change Your Replacement Battery Guide [Updated On- 2025]

Replace your AirTag battery with a CR2032 lithium 3V coin battery. Make sure the positive side is facing up during installation. You can buy this battery at most electronic or drug stores. A new battery lasts about one year, keeping your AirTag fully operational.

When it comes to changing your replacement battery, follow these simple steps. Press down on the stainless steel back cover of the AirTag. Rotate it counterclockwise to unlock and remove the cover. Take out the old battery and replace it with a new CR2032 battery, ensuring the positive side faces up. Replace the back cover, aligning the three tabs with the grooves. Rotate it clockwise until it clicks into place.

Understanding the AirTag battery size and how to manage it helps enhance your experience with this tracking device. In the following section, we will explore additional tips for maximizing battery life and troubleshooting common issues.

# Table of Contents

What Size Battery Does an AirTag Require for Optimal Performance?

The optimal battery size for an AirTag is a CR2032 lithium coin battery.

Factors to consider when selecting a battery:
– Battery size (CR2032)
– Battery type (lithium)
– Battery capacity (maximum usage time)
– Environmental conditions (temperature and humidity)
– User preferences (brand choices)

These important factors will guide users in making informed decisions for replacement batteries.

Battery Size (CR2032):
The battery size designated for the AirTag is a CR2032 lithium coin battery. This size is widely available and can be found in most retail and online stores. CR2032 batteries are known for their small size and lightweight, making them ideal for portable devices like the AirTag.
Battery Type (Lithium):
The AirTag requires a lithium battery type, specifically a lithium manganese dioxide cell. Lithium batteries provide a longer shelf life and stable discharge voltage compared to other types, such as alkaline batteries. They are also less likely to leak and can operate in a broader temperature range.
Battery Capacity (Maximum Usage Time):
The capacity of the CR2032 battery can generally vary between 220mAh to 240mAh. This capacity affects the lifespan of the AirTag, potentially lasting several months before needing replacement. For regular use, it’s estimated that users can expect about one year of service from a fresh CR2032 battery.
Environmental Conditions (Temperature and Humidity):
Environmental conditions can affect battery performance. For instance, extreme temperatures can shorten battery life. The ideal range for lithium batteries is between -20°C to 60°C (-4°F to 140°F). Users should store spare batteries in a cool, dry place.
User Preferences (Brand Choices):
Users may have brand preferences when selecting replacement batteries. Brands like Duracell, Energizer, or Panasonic are popular for their reliability. Some users report preferences based on price point or perceived battery longevity. It’s important to consider purchasing from reputable brands to ensure quality.

Choosing the right battery size and type is essential for maintaining AirTag functionality and performance.

How Can I Check the Current Battery Level of My AirTag?

You can check the current battery level of your AirTag through the Find My app on your iPhone or iPad. This process is straightforward and helps you monitor the battery to ensure your AirTag functions properly.

To check the battery level:

Open the Find My app: Locate and tap the Find My app on your iPhone or iPad. This app is essential for tracking your Apple devices and accessories, including AirTags.
Select the Items tab: At the bottom of the app, tap on the ‘Items’ tab. This section displays all the AirTags and other items you have connected.
Choose your AirTag: Scroll through the list and select the specific AirTag you want to check. Tapping on it opens its details.
Locate battery status: In the details section, you will see the battery status displayed as a small battery icon. The icon indicates whether the battery is full, low, or needs replacement.

The AirTag battery status is an important feature. An AirTag uses a CR2032 battery, which typically lasts about one year, depending on usage. If the battery is low, you should replace it promptly to maintain tracking functionality. To replace the battery, twist the back cover counterclockwise, remove the old battery, and insert the new one, ensuring the positive side is facing up. Regularly checking the battery level will help you manage your AirTag efficiently.

What Are the Steps to Change the Battery in an AirTag Effectively?

To change the battery in an AirTag effectively, follow these steps:

Gather the necessary tools
Locate the battery compartment
Open the AirTag
Remove the old battery
Insert the new battery
Close the AirTag

Changing the battery in an AirTag can seem simple, but there are varying opinions on best practices. Some users recommend using a specific type of battery for optimal performance. Others suggest checking the battery level before changing it to avoid unnecessary actions. Additionally, proper handling techniques can prolong the life of the AirTag and its battery.

Gather the necessary tools:
To change the battery in an AirTag, you need minimal tools. A new CR2032 battery is required, as it is the correct size for the AirTag. Optional tools may include a small flathead screwdriver to help in prying open the compartment, though this is often not necessary.
Locate the battery compartment:
The battery compartment is located on the back of the AirTag. This section features a stainless steel surface that can be easily identified.
Open the AirTag:
Open the AirTag by pressing down lightly on the stainless steel back with your thumb while simultaneously rotating it counterclockwise. The top should pop off easily.
Remove the old battery:
Once open, take out the old battery. It should come out with little effort. If it is stuck, use a soft cloth to grab it, ensuring that you do not damage any internal components.
Insert the new battery:
Insert the new CR2032 battery with the positive (+) side facing up. Ensure it fits securely in the compartment. You may hear a slight sound as the battery connects.
Close the AirTag:
To close the AirTag, align the cover with the device and press down. Rotate the back cover clockwise until it locks in place.

Following these steps will ensure that your AirTag operates effectively with a fresh battery.

Which Battery Type Is Best for Replacing My AirTag’s Battery?

The best battery type for replacing your AirTag’s battery is a CR2032 lithium coin cell battery.

Battery Type: CR2032
Battery Specifications: 3V lithium chemistry, 20mm diameter, 3.2mm thickness
Alternative Options: Non-rechargeable CR2025, CR2016 batteries (though not recommended)
Battery Life Expectation: Up to 12 months under typical use
Environmental Perspective: Recyclability of lithium batteries

It’s important to note the implications of using battery types that are not recommended for AirTag devices.

Battery Type: CR2032:
The CR2032 is the recommended battery type for AirTags. This battery has a voltage of 3 volts and a diameter of 20 mm, with a thickness of 3.2 mm. It is widely available and known for its reliability. According to Energizer, the CR2032 batteries have a long shelf life, often lasting up to 10 years when unused. Users can find them at most electronics stores and online platforms.
Battery Specifications:
The specifications outline that CR2032 batteries utilize lithium chemistry. This enables them to have a lightweight design while supporting a consistent voltage output. The standard measurements of the battery ensure proper fit within the AirTag compartment. Varta, a battery manufacturer, emphasizes that compatibility is crucial for optimal performance.
Alternative Options:
Though the CR2032 is essential for AirTags, some might consider using CR2025 or CR2016 batteries. These alternatives are thinner. However, they are not recommended due to their lower capacity—the CR2025 has a capacity of about 160 mAh, while the CR2016 has around 90 mAh. Using these alternatives can lead to shorter operational times and may also void any warranty on the device.
Battery Life Expectation:
Users can typically expect a CR2032 battery to last up to 12 months. The actual lifespan can vary based on usage frequency and features activated in the AirTag. According to an Apple user guide, frequent pings or high usage can extend battery drain. Keeping the device within standard usage patterns helps achieve optimal battery longevity.
Environmental Perspective:
From an environmental standpoint, lithium batteries, including CR2032 types, are recyclable but must be disposed of properly. Improper disposal can lead to environmental hazards. The Rechargeable Battery Recycling Corporation encourages consumers to recycle batteries at designated collection points to mitigate landfill impacts and promote sustainability.

In conclusion, the CR2032 lithium coin cell battery is the best choice for AirTag replacements, ensuring optimal performance and longevity.

Why Is Using the Correct Battery Size Crucial for My AirTag’s Functionality?

Using the correct battery size is crucial for your AirTag’s functionality. The AirTag requires a specific type of battery—specifically, a CR2032 coin cell battery—to operate effectively.

According to the International Electrotechnical Commission (IEC), a CR2032 battery is defined as a 3-volt lithium battery with dimensions of 20mm in diameter and 3.2mm in thickness. This specification ensures the battery fits properly and delivers the necessary power.

There are several reasons why using the correct battery size is important for your AirTag. First, a battery that is too small may not provide enough power to activate the device. Conversely, a battery that is too large may not fit within the AirTag’s casing, posing a risk of physical damage. Additionally, an incorrect battery size can lead to poor contact with the device’s terminals, resulting in intermittent or complete failure of the AirTag.

A coin cell battery, such as the CR2032, contains lithium, a chemical that allows it to produce the necessary voltage and current for the AirTag. Coin cell batteries are characterized by their flat, disc-like shape. If other types of batteries, such as AA or AAA, are used, they lack the appropriate dimensions and voltage required by the AirTag.

The mechanisms involved in battery function are relatively straightforward. When a battery is installed in a device, it completes an electrical circuit that powers the device. If the battery is incorrect, it may disrupt this circuit, leading to device malfunctions. For example, if an individual uses an expired or damaged CR2032 battery, the AirTag may fail to power on or maintain its connection to Bluetooth networks, which is essential for its tracking capabilities.

Specific conditions or actions that contribute to these issues include improper installation of the battery or using a counterfeit or low-quality replacement battery. For instance, inserting a battery with the wrong polarity can prevent the AirTag from functioning altogether. Furthermore, extreme temperatures can affect battery performance, leading to diminished capacity and the potential need for replacement sooner than anticipated.

What Indications Show That My AirTag Battery Needs Replacing?

The indications that show your AirTag battery needs replacing include a low battery notification and reduced tracking accuracy.

Low Battery Notification
Reduced Tracking Functionality
Beeping Sound from the AirTag

These points highlight how you can identify when it’s time to replace the AirTag battery. Understanding each aspect provides clarity on maintenance.

Low Battery Notification:
The low battery notification occurs when the AirTag’s battery charge declines significantly. This alert appears on your iPhone or iPad via the Find My app. According to Apple, the notification is a proactive measure to ensure that users can act before losing their tracking capabilities.
Reduced Tracking Functionality:
Reduced tracking functionality can manifest as delayed location updates or inaccuracies in pinpointing the AirTag’s location. This happens when the battery power is insufficient for the device to relay its position effectively. In practical terms, this means if you notice that your AirTag is not providing timely updates, it may be time for a battery replacement. User experiences highlight that once the battery is replaced, tracking improves dramatically.
Beeping Sound from the AirTag:
The beeping sound from the AirTag is an indication of various alerts, but it can also signal a battery issue. If the AirTag often emits sounds without user initiation, it may suggest that it’s attempting to communicate low battery status. This feature works as an additional warning system. Users have reported that addressing this sound promptly can save time and prevent losing valuable items.

How Frequently Should I Replace the Battery in My AirTag?

You should replace the battery in your AirTag approximately once a year. The AirTag uses a standard CR2032 battery. This type of battery typically lasts between six months to a year, depending on usage. Check the battery status using the Find My app. The app notifies you when the battery is low. If you notice a significant decrease in tracking performance, consider replacing the battery sooner. Changing the battery is simple; just twist off the back cover and insert a new CR2032 battery. Ensure the positive side is facing up. This process keeps your AirTag functioning optimally.

What Are the Best Practices to Extend the Battery Life of My AirTag?

To extend the battery life of your AirTag, follow these best practices:

Keep your AirTag clean.
Limit unnecessary tracking.
Adjust your notifications.
Store your AirTag in a suitable environment.
Turn off Precision Finding when not needed.
Disable unnecessary features.

Implementing these practices can help maximize your AirTag’s battery efficiency and longevity.

Keep Your AirTag Clean: Keeping your AirTag clean ensures proper functioning and performance. Dirt or debris can interfere with connectivity and battery life. Regularly wipe your AirTag with a soft, dry cloth to maintain its exterior.
Limit Unnecessary Tracking: Limiting the frequency of location requests can save battery power. If you track your AirTag too frequently, it drains the battery faster. Use it primarily when needed to optimize energy usage.
Adjust Your Notifications: Adjusting notifications related to your AirTag can reduce battery drain. Too many alerts can keep the device active longer than necessary. Customize notifications to only receive essential updates.
Store Your AirTag in a Suitable Environment: Environmental factors can impact battery life. Avoid exposing your AirTag to extreme temperatures or high humidity. A stable climate can prevent battery deterioration over time.
Turn Off Precision Finding When Not Needed: Precision Finding uses Ultra Wideband technology, which can quickly drain the battery. Turn off this feature when you don’t need it to preserve energy.
Disable Unnecessary Features: Disabling features like alerts when you are out of range can save battery life. Customize your settings based on your usage to reduce energy consumption.

By following these best practices, you can significantly extend the battery life of your AirTag.

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