Find Battery Model For Car Key Battery Replacement - Key Fob Batteries

In this post, we will discuss Car key battery replacement, how to replace car key batteries, some dos and don’ts, and find the perfect battery match with your car brand and car model.

If you found that your car key fob is not responding, there may be the possibility of internal electric system failure or the battery has been dead. In most common cases, car key fobs do not respond due to a dead battery.

There are some signs to identify the time to change the battery. Over time, your car key fob may become less responsive or unresponsive.

It could be difficult to lock or unlock your car and start losing its range. The keyless entry feature might require you to go closer for it to operate.

Here you can find How to replace a battery in a car key fob. 

There are some Do’s and Don’ts instructions to follow and they are as below

Do’ to car key battery replacement

• Read the instructions on your device before installing the battery
• Make sure whether the battery is inserted properly or not
• Check the correct way to position the positive (+) and negative (-) ends of the battery
• Keep the surface of the battery clean from dirt and wet
• Ensure the battery size and type fit your car key fob
• Replace the old battery with the new battery in the same way
• Store batteries in a cool and dry place at the normal room temperature
• Dispose of dead battery promptly in a proper way

Don’ts do to car key battery replacement

• Don’t keep batteries anywhere. Keep out of reach of children as they are small coin-size batteries and swallowing may lead to serious injury or death
• Don’t dispose of the dead battery in a fire, the chemical inside may rupture or leak
• Don’t try to recharge the battery unless it is advertised as “rechargeable”
• Don’t use batteries at a high temperature that may cause a chemical leakage and can damage your device with the chemical spread

Most Common Car Key Fob Batteries

Various series are available for fob batteries, but the CR2032 battery is the most commonly used one. The batteries are different in size and capacity. There are some similarities that may be there with diameter, voltage, chemical composition, discharge current rate, and manufacturer.

To check the technical data of batteries

To check the battery sizes

For example, CR2032 battery, in this, the C specified Lithium chemical composition, the R indicated the shape of a Round, and 2032 indicates 20mm wide size and 3.2mm tall.

Similar coin cell batteries list

• CR1220
• CR1616
• CR1620
• CR1632
• CR2016
• CR2025
• CR2032
• CR2412
• CR2450

Check the batteries cross-reference guide

Batteries with car make, car model, model year and suitable battery type

Conclusion

The CR2032 battery comes with up to 10 years of lifespan if not used. In general, it lasts up to 4-5 years when in use in a car key fob. The discharge time may vary as per usage so, after a few years, it is recommended to replace the battery.

The CR2032 and CR2025 batteries are widely used batteries in key fobs. But it does not mean that it fits every key fob. You can check the above chart to find the best battery match for your car key fob.

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