How to Change a Key Fob Battery: A Step-by-Step Guide


Changing a key fob battery may seem like a small task, but it is an important one that can save you time and money in the long run. Not knowing how to change a key fob battery can lead to frustration and inconvenience if your key device suddenly stops working while you’re out and about.

This article is designed to help anyone who has a key fob device and wants to be able to replace the battery themselves. Whether you’re a homeowner, renter or car owner, changing your key fob battery can be an easy and cost-effective way to maintain your device.

Step-by-step Guide

Follow these simple steps to replace your key fob battery:

  1. Look for the battery compartment on your key fob. This is usually on the back or side of the device.
  2. Use a small screwdriver or a coin to open the battery compartment.
  3. Remove the old battery and take note of the battery type. It is important to use the correct battery replacement to avoid further issues.
  4. Insert the new battery with the positive (+) side facing up.
  5. Close the battery compartment and test your key fob to ensure it is functioning properly.

Taking precautions is essential when changing a key fob battery. Make sure to use the correct replacement battery, avoid touching the circuit board, and ensure the battery compartment is securely closed to prevent damage to the device.

Video Tutorial

If you prefer visual aids, consider watching this informative video tutorial that provides step-by-step instructions on changing a key fob battery:

We recommend this video for extra guidance to help you replace your key fob battery. The video is concise and easy to follow, with additional tips and troubleshooting advice that can help you succeed in replacing your key fob battery.

Product Comparison

There are various battery replacement products available in the market, and choosing one that is suitable for your key fob is important.

The following table provides details on some of the most popular and reliable key fob battery replacement products available:

Battery Replacement Product Performance Pricing Convenience
Energizer Lithium Coin Battery Long-lasting battery $$ Widely available
Panasonic CR2025 Lithium Battery Reliable and high-quality performance $$ Easy to find and purchase
Sony CR2032 Lithium Battery High power output $$ Widely available

Choosing the best key fob battery can depend on several factors, such as the type of device you have, the manufacturer’s recommendations, and personal preferences.


If your key fob stops working after replacing the battery or does not function well even after battery replacement, the following tips can help you troubleshoot common issues:

  • Ensure that you have used the correct battery type recommended for your device.
  • Check for damaged or corroded battery contacts inside the battery compartment.
  • Try resetting your key fob by pressing the lock and unlock buttons simultaneously.
  • If your key fob still doesn’t work, consider contacting a professional or the device manufacturer for assistance.

Maintenance Tips

Maintaining and caring for your key fob can help keep it functioning well for longer. Here are some tips for extending the life of your key fob battery:

  • Avoid exposing your key fob to extreme temperatures or humidity.
  • Handle your key fob with care and avoid dropping it or exposing it to water.
  • Replace the battery as soon as it starts to lose power rather than waiting until it dies altogether.
  • Dispose of old batteries properly by recycling them according to your local guidelines.


Knowing how to change a key fob battery is essential for anyone who wants to maintain and extend the life of their device. By following the step-by-step guide, using the correct battery replacement, and taking precautions when changing the battery, you can ensure your key fob functions well for a long time. If troubleshooting is required, try to diagnose common problems before contacting professional assistance.

We encourage you to share this article with others who may find it helpful and use the suggested links and video resources to answer any additional questions.

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