What Kind Of Battery Is In A Car Key Fob? Essential Guide

When it comes to our daily lives, we often take for granted the small things that make our lives easier and more convenient. One such example is the car key fob. It’s a small device that we use to unlock our cars, start the engine, and even remote-start our vehicles. But have you ever wondered what makes it tick? What kind of battery is in a car key fob, and how does it work? In this comprehensive guide, we’ll delve into the world of car key fobs and explore the different types of batteries used in these devices.

Car key fobs have become an essential part of our daily lives, and it’s hard to imagine a time when we didn’t have them. They’ve made it easier for us to access our cars, and they’ve also added an extra layer of security to our vehicles. But with the rise of key fobs, there’s been a growing concern about the type of battery used in these devices. Some people have reported issues with their key fobs not working properly, and it’s often attributed to the battery. So, what kind of battery is in a car key fob, and how can we ensure that it lasts longer?

Types of Batteries Used in Car Key Fobs

There are several types of batteries used in car key fobs, and the most common ones are:

• CR2032
• CR2
• CR1/3N
• LR44
• AG13

Each of these batteries has its own unique characteristics, and they’re used in different types of key fobs. Let’s take a closer look at each of these batteries and their features.

CR2032 Batteries

The CR2032 battery is one of the most common types of batteries used in car key fobs. It’s a coin-shaped battery that’s 20mm in diameter and 3.2mm in thickness. It has a voltage of 3V and a capacity of 220mAh. The CR2032 battery is widely used in key fobs because of its small size and high energy density. It’s also relatively inexpensive and easy to replace.

Here are some key features of the CR2032 battery:

CR2 Batteries

The CR2 battery is another type of battery used in car key fobs. It’s a coin-shaped battery that’s 17mm in diameter and 5.4mm in thickness. It has a voltage of 3V and a capacity of 250mAh. The CR2 battery is used in key fobs that require a higher energy density than the CR2032 battery.

Here are some key features of the CR2 battery:

CR1/3N Batteries

The CR1/3N battery is a smaller version of the CR2032 battery. It’s 10mm in diameter and 2.5mm in thickness. It has a voltage of 3V and a capacity of 100mAh. The CR1/3N battery is used in key fobs that require a lower energy density than the CR2032 battery.

Here are some key features of the CR1/3N battery: (See Also: Why Is My Car Battery Charger Not Working? Troubleshooting Tips)

LR44 Batteries

The LR44 battery is a type of battery used in car key fobs. It’s a cylindrical battery that’s 11.6mm in diameter and 5.4mm in thickness. It has a voltage of 1.5V and a capacity of 100mAh. The LR44 battery is used in key fobs that require a lower energy density than the CR2032 battery.

Here are some key features of the LR44 battery:

AG13 Batteries

The AG13 battery is a type of battery used in car key fobs. It’s a cylindrical battery that’s 9.5mm in diameter and 5.4mm in thickness. It has a voltage of 1.5V and a capacity of 100mAh. The AG13 battery is used in key fobs that require a lower energy density than the CR2032 battery.

Here are some key features of the AG13 battery:

How to Choose the Right Battery for Your Car Key Fob

Choosing the right battery for your car key fob can be a bit confusing, especially with so many options available. Here are some tips to help you choose the right battery:

• Check the manufacturer’s instructions: The first step is to check the manufacturer’s instructions for the specific key fob you have. They will recommend the type of battery to use.
• Check the battery size: Make sure the battery you choose is the right size for your key fob. A battery that’s too small or too large may not fit properly.
• Check the voltage: Make sure the battery you choose has the right voltage for your key fob. A battery with the wrong voltage may not work properly.
• Check the capacity: Make sure the battery you choose has enough capacity to last for a long time. A battery with low capacity may need to be replaced frequently.
• Check the price: Batteries can vary in price, so make sure you choose one that fits your budget.

How to Replace the Battery in Your Car Key Fob

Replacing the Battery in Your Car Key Fob

Replacing the battery in your car key fob is a relatively simple process that you can do yourself. Here’s a step-by-step guide to help you replace the battery:

**Important:** Before you start, make sure you have the correct replacement battery for your key fob. Check the manufacturer’s instructions for the specific key fob you have to ensure you get the right battery.

Step 1: Remove the Key Fob Cover

The first step is to remove the key fob cover. This is usually done by sliding the cover off or by removing a small screw. Check the manufacturer’s instructions for specific instructions on how to remove the cover. (See Also: How to Replace the Battery in My Car Key Fob? A Simple Step By Step Guide)

Step 2: Locate the Battery

Once you’ve removed the cover, you should see the battery. It’s usually located in a small compartment or on the back of the key fob.

Step 3: Remove the Old Battery

Use a small screwdriver or a battery removal tool to remove the old battery. Be careful not to touch any of the internal components.

Step 4: Install the New Battery

Take the new battery and insert it into the compartment. Make sure it’s seated properly and the + and – terminals are facing the correct direction.

Step 5: Replace the Cover

Once the new battery is installed, replace the cover. Make sure it’s securely fastened to prevent any water or dust from entering the key fob.

Common Issues with Car Key Fobs

Car key fobs can be prone to various issues, including:

• Battery drain: This occurs when the battery is drained faster than expected, causing the key fob to stop working.
• Interference: This occurs when the key fob is affected by external interference, such as other electronic devices or nearby radio frequencies.
• Water damage: This occurs when the key fob is exposed to water or moisture, causing the internal components to malfunction.
• Damage to the key fob: This occurs when the key fob is dropped or subjected to physical stress, causing the internal components to malfunction.

How to Troubleshoot Common Issues with Car Key Fobs

Here are some common issues with car key fobs and how to troubleshoot them:

Battery Drain

Battery drain occurs when the battery is drained faster than expected, causing the key fob to stop working. To troubleshoot this issue, try the following:

• Check the battery level: Make sure the battery is not dead or low.
• Check for interference: Move the key fob away from other electronic devices or nearby radio frequencies.
• Check for water damage: Inspect the key fob for any signs of water damage.

Interference

Interference occurs when the key fob is affected by external interference, such as other electronic devices or nearby radio frequencies. To troubleshoot this issue, try the following:

• Move the key fob away from other electronic devices or nearby radio frequencies.
• Check for water damage: Inspect the key fob for any signs of water damage.
• Check the battery level: Make sure the battery is not dead or low.

Water Damage

Water damage occurs when the key fob is exposed to water or moisture, causing the internal components to malfunction. To troubleshoot this issue, try the following: (See Also: When Should Replace Car Battery? Signs Of Failure)

• Inspect the key fob for any signs of water damage.
• Check the battery level: Make sure the battery is not dead or low.
• Check for interference: Move the key fob away from other electronic devices or nearby radio frequencies.

Conclusion

Car key fobs are an essential part of our daily lives, and they require regular maintenance to ensure they continue to work properly. By understanding the different types of batteries used in car key fobs and how to replace them, you can ensure your key fob continues to work properly. Additionally, by troubleshooting common issues with car key fobs, you can resolve any problems that may arise and keep your key fob in good working condition.

FAQs

What kind of battery is in a car key fob?

The type of battery used in a car key fob depends on the specific model and manufacturer. Common types of batteries used in car key fobs include CR2032, CR2, CR1/3N, LR44, and AG13.

How do I replace the battery in my car key fob?

To replace the battery in your car key fob, you’ll need to remove the cover, locate the battery, remove the old battery, and install the new battery. Make sure to follow the manufacturer’s instructions for specific instructions on how to replace the battery.

Why is my car key fob not working?

There are several reasons why your car key fob may not be working, including battery drain, interference, water damage, or damage to the key fob. Try troubleshooting the issue by checking the battery level, moving the key fob away from other electronic devices or nearby radio frequencies, and inspecting the key fob for any signs of water damage.

Can I use any type of battery in my car key fob?

No, you should only use the type of battery recommended by the manufacturer. Using the wrong type of battery can cause the key fob to malfunction or not work at all.

See Also:

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• How to Avoid Car Battery Dying at Drive-in? Smart Tips
• How to Charge Car Battery with Stanley Fatmax Powerit 1000a? Easy Step By Step Guide
• What Causes Blue Corrosion on Car Battery? Signs To Watch

How long does a car key fob battery last?

The lifespan of a car key fob battery depends on various factors, including the type of battery, usage, and environmental conditions. On average, a car key fob battery can last anywhere from 1 to 5 years.