What Kind of Battery Does a Key Fob Take: A Quick Guide

If you own a car with keyless entry, you probably have a key fob that you use to unlock and lock your car doors. However, have you ever wondered what type of battery your key fob takes? It’s important to know what kind of battery your key fob uses so that you can replace it when the battery runs out. In this article, we will discuss the different types of batteries that key fobs use and how to replace them.

Most key fobs use a small, round battery called a “button cell” battery. The most common type of button cell battery used in key fobs is the CR2032. However, depending on the make and model of your car, your key fob may use a different type of battery. It’s important to know what type of battery your key fob uses so that you can purchase the correct replacement battery.

Types of Batteries for Key Fobs

When it comes to key fobs, there are different types of batteries that can power them. In this section, we’ll discuss the three most common types of batteries for key fobs: coin cell lithium batteries, alkaline batteries, and rechargeable batteries.

Coin Cell Lithium Batteries

Coin cell lithium batteries are the most common type of battery used in key fobs. They are small, flat, and round batteries that are easy to install. The most common type of coin cell lithium battery used in key fobs is the CR2032. It is a 3-volt battery that is widely available and inexpensive. Other types of coin cell lithium batteries that may be used in key fobs include CR2450, CR2025, CR1616, and CR2016.

Alkaline Batteries

Alkaline batteries are another type of battery that can be used in key fobs. They are larger than coin cell lithium batteries and are not as commonly used. Alkaline batteries are available in different sizes and voltages, so it’s important to check the manufacturer’s specifications to ensure that the correct battery is used. Some common types of alkaline batteries used in key fobs include AAA, AA, C, and D batteries.

Rechargeable Batteries

Rechargeable batteries are becoming more popular for use in key fobs. They are environmentally friendly and can be recharged multiple times before they need to be replaced. The most common type of rechargeable battery used in key fobs is the lithium-ion battery. They are available in different sizes and voltages, so it’s important to check the manufacturer’s specifications to ensure that the correct battery is used.

When choosing a battery for your key fob, it’s important to check the manufacturer’s specifications to ensure that the correct battery is used. Using the wrong type of battery can damage your key fob or cause it to malfunction. With the right battery, your key fob will continue to work properly and keep your car secure.

Identifying the Correct Battery for Your Key Fob

When it comes to replacing the battery in your key fob, it is important to identify the correct type of battery to ensure that it will work properly. In this section, we will discuss three methods for identifying the correct battery for your key fob.

Reading the Key Fob

The first step in identifying the correct battery for your key fob is to read the key fob itself. Many key fobs will have the battery type or number printed on the back of the fob. If you are unable to find the battery information on the back of the fob, you may need to open the fob to see if the battery type or number is printed on the inside.

Owner’s Manual Consultation

Another method for identifying the correct battery for your key fob is to consult the owner’s manual for your vehicle. The owner’s manual should have information about the type of battery used in the key fob and instructions for replacing the battery. If you do not have the owner’s manual, you may be able to find a digital copy online.

Battery Number Matching

The final method for identifying the correct battery for your key fob is to match the number on the old battery. To do this, you will need to remove the old battery from the key fob and look for a number printed on the battery. This number can then be used to find a replacement battery that matches the specifications of the old battery.

In conclusion, identifying the correct battery for your key fob is essential to ensure that your key fob functions properly. By reading the key fob, consulting the owner’s manual, or matching the battery number, you can easily identify the correct battery for your key fob and replace it as needed.