What kind of batteries car keys

If you’ve ever owned a car, you know that car keys require small batteries to run. These batteries power the remote entry system, which allows you to lock and unlock your car from a distance, as well as perform other functions like activating the car alarm.

But what kind of batteries do car keys use, and how long do they typically last?

Generally, car key remotes use small, replaceable batteries that are similar to watch batteries. These batteries are typically lithium-ion batteries, which are known for their high energy density and long lifespan. In most cases, car key batteries will last for several years before needing to be replaced.

However, the exact battery used in your car key may vary depending on the make and model of your car, as well as the specific key fob you are using. Some car keys may also use rechargeable batteries rather than replaceable ones. It’s always a good idea to consult your car’s manual or a trusted mechanic to determine the exact type of battery your car key requires.

The Different Types of Batteries Used in Car Keys

CR2032

The CR2032 is a small, coin-shaped battery commonly used in car key fobs. It is a lithium battery, which means it lasts longer than other battery types, making it a popular choice for everyday use. The CR2032 has a voltage of 3V and can be found in most electronics stores.

CR2016

Another common type of battery used in car key fobs is the CR2016. This is also a lithium battery and has a voltage of 3V, but is smaller than the CR2032. It is often used in smaller key fobs. The CR2016 can be found in most stores that sell electronics.

AA Batteries

AA batteries are often used in car keys that have a remote start function or other advanced features. The remote start function requires more power, making it necessary to use a larger battery. AA batteries have a voltage of 1.5V and can be found in most stores that sell batteries.

Watch Batteries

Some car keys use watch batteries, such as the SR621SW or the SR626SW. These batteries are also small and coin-shaped, and have a voltage of 1.5V. They are often used in car keys that have a limited amount of buttons or features.

Conclusion

There are a variety of batteries used in car keys, each with their own benefits and uses. The CR2032 and CR2016 are popular choices for everyday use, while AA batteries are used in keys with more advanced functions. Watch batteries are also used in some keys. It’s important to know which type of battery your key requires, so that you can replace it when needed and ensure that your key continues to function properly.

Alkaline Batteries

What are alkaline batteries?

Alkaline batteries are commonly used in car keys as they are reliable, long-lasting and have a high energy output. They are called ‘alkaline’ because the electrolyte used in them is an alkaline solution, which is a type of base that has a pH greater than 7.

Advantages of alkaline batteries

• Long shelf life: Alkaline batteries have a long shelf life and can retain their charge for up to 5 years, making them a perfect choice for car keys that are not used frequently.
• Higher energy output: Alkaline batteries have a high energy output, making them a reliable source of power for car keys even in demanding conditions.
• Cost-effective: Alkaline batteries are cost-effective and widely available, making them an ideal choice for everyday use.
• Environmentally friendly: Alkaline batteries are considered to be safer for the environment compared to other types of batteries as they do not contain heavy metals such as mercury and cadmium.

Disadvantages of alkaline batteries

However, there are also some disadvantages to using alkaline batteries. They can leak and corrode the battery compartment if left inside for too long, and as they deplete, their voltage drops off rapidly, making it difficult to predict when they will run out of power.

Conclusion

Alkaline batteries are still a popular choice for car key remotes due to their reliability, longevity, and overall cost-effectiveness. They may not be the best choice for devices that require a consistent voltage output, but for low-drain devices such as remotes, they are the go-to power source.

Lithium Batteries

Introduction

Lithium batteries are commonly used in car keys and other electronic devices due to their lightweight, small size, and long-lasting power. They are also known for their high voltage and energy density, making them an ideal choice for devices that require high power output.

Advantages

One of the main advantages of lithium batteries is their long battery life. They can last for several years, making them a cost-effective solution in the long run. They also have a low self-discharge rate, meaning they can hold their charge for a long time, even when not in use. Additionally, lithium batteries are relatively light, making them easy to carry around.

• Long battery life
• Low self-discharge rate
• Lightweight

Disadvantages

Despite their many advantages, lithium batteries do come with a few drawbacks. One of these is their high cost. They tend to be more expensive than other types of batteries, though this is changing as more manufacturers begin producing them. Additionally, lithium batteries can be dangerous if carelessly handled. They are highly flammable and can explode if not handled properly.

• High cost
• Potentially dangerous if mishandled

Conclusion

Despite their high cost and potential hazards, lithium batteries are a popular choice for a variety of electronic devices, including car keys. Their long battery life and high energy output make them an ideal choice for devices that require a lot of power, while their lightweight and compact size make them easy to carry around. With proper handling and care, lithium batteries can provide long-lasting, reliable power for years to come.