Have you ever wondered what size battery goes in a key fob? You’re not alone! It’s a common question for anyone who relies on these small devices for their daily convenience. Well, the answer is quite simple – most key fobs use a small coin or button cell battery to function. These batteries are typically easy to find and replace, ensuring that you can keep your key fob working smoothly. In this article, we’ll explore the different types of batteries used in key fobs and provide some handy tips for changing them. So, if you’ve been wondering about what size battery goes in a key fob, let’s dive right in!
What Size Battery Goes in a Key Fob?
Have you ever found yourself locked out of your car because the key fob battery died? It can be frustrating and inconvenient, especially if you’re in a rush. That’s why it’s important to know what size battery goes in your key fob, so you can easily replace it when needed. In this article, we’ll explore the various key fob battery sizes and provide you with all the information you need to keep your key fob working smoothly.
Understanding Key Fobs and Their Batteries
Before we dive into the specific battery sizes, let’s take a moment to understand what key fobs are and how they work. Key fobs, also known as keyless entry remotes, are small handheld devices that allow you to remotely lock or unlock your car doors, open the trunk, or even start the engine.
Key fobs are powered by a small battery that provides the necessary energy for the remote functions to work. These batteries are usually coin-shaped and come in various sizes, depending on the make and model of your key fob. It’s important to note that key fob batteries are not rechargeable, so they will eventually need to be replaced.
Common Key Fob Battery Sizes
The size of the battery required for your key fob will depend on the brand and model of your vehicle. However, there are a few common sizes that are widely used across different car manufacturers. Let’s take a look at some of these common key fob battery sizes:
1. CR2032
The CR2032 battery is one of the most commonly used key fob battery sizes. It is a 3-volt lithium coin cell battery and is used in a wide range of key fobs from various car brands. This battery size is known for its long lifespan, which can last for several years before needing replacement.
2. CR2025
The CR2025 is another popular key fob battery size. It is also a 3-volt lithium coin cell battery but is slightly thinner than the CR2032. Many car manufacturers, including Toyota and Honda, use this battery size for their key fobs. Like the CR2032, the CR2025 offers a long lifespan and provides reliable power to your key fob.
3. CR2016
The CR2016 is a smaller 3-volt lithium coin cell battery often used in key fobs for luxury car brands like BMW and Mercedes-Benz. While it may be smaller in size, it still provides sufficient power to operate the key fob functions effectively. It’s important to check your specific car’s manual or consult with the manufacturer to determine the correct battery size for your key fob.
How to Replace Your Key Fob Battery
Now that you know the common key fob battery sizes, you might be wondering how to replace the battery in your key fob. While the specific steps may vary depending on your car’s make and model, here’s a general guide to help you:
- Locate the battery compartment on your key fob. This is usually a small panel on the back of the remote.
- Use a small screwdriver or coin to gently open the compartment.
- Take note of the battery’s orientation (positive and negative terminals) before removing it.
- Remove the old battery and insert the new one, ensuring it is properly aligned.
- Close the battery compartment and test the key fob to ensure it is functioning correctly.
Remember, it’s always a good idea to consult your car’s manual or contact the manufacturer if you’re unsure about the battery replacement process for your specific key fob model.
Ensuring Longer Key Fob Battery Life
While key fob batteries will eventually need to be replaced, there are a few steps you can take to extend their lifespan and avoid unexpected battery failures. Here are some tips to help you get the most out of your key fob battery:
- Avoid excessive exposure to extreme temperatures, as it can drain the battery faster.
- Keep the key fob away from water and moisture, as it can damage the internal components.
- When not in use, store the key fob in a safe place to prevent accidental button presses.
- Consider using a protective case or cover to shield the key fob from impacts and scratches.
By following these simple tips, you can help ensure that your key fob battery lasts longer and reduces the chances of being caught off-guard with a dead battery.
Knowing what size battery goes in your key fob is essential for maintaining functionality and avoiding any inconveniences caused by a dead battery. The most common key fob battery sizes include CR2032, CR2025, and CR2016, but it’s crucial to check your car’s manual or consult with the manufacturer to determine the correct battery size for your specific key fob.
Replacing the battery in your key fob is a simple task that can be done at home, but always refer to the car’s manual for specific instructions. By following the suggested tips for extending the battery life, you can ensure that your key fob continues to work reliably and keep you in control of your vehicle’s remote functions.
Frequently Asked Questions
What size battery does a key fob require?
Key fobs typically require different sizes of batteries, depending on the manufacturer and model. It is important to consult the owner’s manual or check the manufacturer’s website to determine the correct battery size for your specific key fob.
How do I find out the battery size for my key fob?
The easiest way to find out the battery size for your key fob is by referring to the owner’s manual. If you don’t have the manual, you can also visit the manufacturer’s website and search for the key fob model to find the recommended battery size.
Are key fob batteries standard sizes?
No, key fob batteries are not standard sizes across all models. Different key fobs may require different battery sizes such as CR2032, CR2025, or CR2016. Therefore, it is crucial to determine the specific battery size for your key fob.
Can I use a different battery size in my key fob?
It is not recommended to use a different battery size in your key fob than what is specified by the manufacturer. Using the wrong battery size may result in improper functionality or damage to the key fob.
How often should I replace the battery in my key fob?
The frequency of battery replacement in a key fob depends on various factors, including the usage of the key fob, the battery quality, and the manufacturer’s instructions. However, on average, key fob batteries may need to be replaced every 1 to 2 years.
Can I replace the battery in my key fob myself?
Yes, in most cases, you can replace the battery in your key fob yourself. Typically, key fob batteries can be easily accessed by removing a small cover or using a screwdriver to open the housing. However, if you are unsure or uncomfortable with the process, it is recommended to consult a professional or visit a local dealership or locksmith for assistance.
Final Thoughts
The key fob is a small device that allows you to remotely control your car’s locks and alarm system. To ensure it functions properly, it requires a specific size of battery. The most common battery used in key fobs is the coin cell or button cell battery. These batteries are small and compact, often available in sizes like CR2032 or CR2025. When it comes to replacing the battery in your key fob, it is essential to check the size and type specified in your car’s manual or consult with a professional. Using the correct size battery ensures optimal performance and functionality of your key fob.
