It has been several years since the design of keys has started evolving and today we stand in an era where a traditional key and smart keys cannot be compared. While a traditional key has to be inserted into a keyhole, a smart key does not need any of these procedures, all you have to do is press the unlock button and Voila! Car unlocked. 

Today car keys come with features that enable the user to unlock or lock the car wirelessly, such keys have batteries incorporated into it, which powers the circuit inside it. However, these batteries do not power the keys for a lifetime, and the user will have to replace them manually. Replacing a dead key battery is not an easy task, as different car keys require a different type of batteries.

5 Best Car Key Battery Online

However, a car key battery is not a special battery they could be the same battery we use in watches, remotes controls, or calculators. The type of battery used will depend entirely on the type of car key—however, some brands manufacture and market batteries that are specifically designed for car keys. If you are looking for a car key battery, then we have selected and listed the top five best car key batteries that you can consider purchasing today. Our experts have reviewed each of the products and we have compiled a buying guide that can help you select the best from the diverse market. 

1. CR2032 Key Fob Remote Battery (2-Pack)

CR2032 Key Fob Remote Battery (2-Pack)

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A car key battery is very important as the car key itself, without an appropriate battery to power the key; it will be useless if you are looking for the best battery for your car key, then, this product is the best option for you. 

The product comes from the brand Discount Keyless and it is one of the top-rated brands that market car key battery today. This product comes in a pack of two batteries and it is easy to install. One of the notable things about this product is that the user does not have to re-program the key after installing this battery. The manufacturer has a strict policy of delivering fresh batteries with at least a year to the expiry date.

Pros

  • Comes in a pack of 2
  • Guaranteed quality
  • No reprogramming required
  • 220mAh capacity
  • Lithium battery

Cons

  • Nothing as such

2. KeylessOption 2032 Battery

KeylessOption 2032 Battery

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This car battery comes from the brand KeylessOption, which is not a well-known brand. However, in the past few months, the customer reviews on this product have been consistently positive and this is one of the reasons, we added this product to our list. 

This is a CR032 type battery that is best recommended and designed for keyless entry car keys. One of the best things about this product is that it can power your smart key for a long time and the battery does not drain easily. The user does not have to re-program the key after installing this battery as they come specially designed to avoid such hassles. 

Pros

  • Long-lasting
  • Comes in a pack of 2
  • Comes in three size variants 1x, 2x, and 5x
  • Reasonable price

Cons

  • The brand is not well-known

3. USARemote Battery CR2032 3V for Car Remote Key

USARemote Battery CR2032 3V for Car Remote Key

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USARemote is one of the top-rated car key battery brands on the market today; this brand has a legacy and reputation in manufacturing and marketing top-quality car key batteries. This product is best recommended for smart keys as they can power your key for a long time.

This product comes in a pack of three batteries that are designed for easy installation. One of the best things about this product is that it is designed to be installed without re-programming the key. The entire product is blister packaged to ensure the product remains fresh for a long time. 

Pros

  • Comes in a pack of 3
  • Reasonable price
  • Reputed brand
  • No re-programming required

Cons

  • Few customers have reviewed the product to drain within a month of use

4. CR2032 Key Fob Remote Battery (5-Pack)

CR2032 Key Fob Remote Battery (5-Pack)

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Yet another product from the brand Discount Keyless and this car key battery is one of the top-rated available today. This product comes in a pack of five batteries and is designed to serve the requirements of your smart key. 

This is a CR2032 specification car key battery designed to power your smart key for a long time, the product comes designed in such a way that it is easy to install. The user will not have to re-program the battery after the installation of this battery. As mentioned above, this product is guaranteed to fresh with at least a year to the expiry date. 

Pros

  • Comes in a pack of 5
  • Available in 3 variants, CR201, CR2025, and CR2032
  • Easy to install
  • No re-programming required

Cons

  • Few of the customers have reviewed the product to drain quickly

4. Mercedes-Benz Remote Key Battery

Mercedes-Benz Remote Key BatteryBuy at Amazon

Almost everyone around the world knows the brand Mercedes Benz; this brand has a legacy of manufacturing and marketing top-quality products. This car key battery is designed for almost every Mercedes Benz car keys that is powered by a 0000388-coin battery. 

One of the best things about this coin battery is that it is designed to power the smart keys of almost every car, few of the common cars includes SLK350, CLS63 AMG, E320, E550, CL500, GL450, C63 AMG, and SL55 AMG. Unlike most of the car key batteries, this product comes best packaged. The product comes in a pack of 2 batteries. 

Pros

  • Top-rated brand
  • Designed for Mercedes Benz car keys
  • Compatible with almost every Mercedes car keys

Cons

  • Designed only for Mercedes Benz car keys

Car Remote Key Battery Buying Guide

As mentioned in the introduction, a car key is not a type of a battery that has a special design or shape. It is just a coin battery that can power the car key, however, some the specification such an output power could be different for a car key battery, this is because a car key might demand a different power rating than a normal coin battery. This is one of the reasons, it is very important that you consider the below-mentioned factors while purchasing a car key battery.

1. Types of Key

Different cars have different types of keys today, and each type of key may or may not use the same battery. However, it is very important that you check the car user manual and find out the type of battery your car key requires. There are instances where the installation of a wrong battery has rendered the car key useless forever. Therefore, without an expert opinion or without referring to the user manual, never try to pick a car key battery.

2. Brand

Car keys are very important, in the beginning, it was easy to duplicate the car keys, but today, smart keys are comparatively very hard to duplicate. This simply means that if the battery you install fries the car key circuits somehow, you will not be able to lock and unlock your car. Here is where the battery brand comes into play, today, the market is so diverse that there are top-rated brands that manufacture and market top-quality batteries for specific car keys. If the brand is reputed, the quality and the specifications declared would be consistent throughout. 

3. Warranty

Batteries are tiny powerhouses that power the car key to perform specific functions wirelessly. If the battery fails to provide the power required, the key could prove useless, there are instances where coin battery simply seizes to function, it could be because of poor quality or any other internal reasons. In such circumstances, a warranty can help you, most of the car key battery available on the market today come with a manufacturer’s declaration of the maximum number of months the battery can power your key. Therefore, it is very important that purchase a car key battery with maximum warranty. 

4. Expiry Date

Most of the people assume that the expiry date of batteries is just a sham. This is utter foolishness; a battery can efficiently function only within the expiry period. If you purchase such expired batteries, then there are high chances that it will not function. Therefore, always check the expiry date before purchasing the battery.

Bottom line 

A car key battery is very important as the circuit itself, without an efficient battery, your key could prove useless. This is why there is anbra immense need to purchase the best car key battery. The above-mentioned car key batteries were selected strictly based on the factors mentioned in the buying guide. Feel free to purchase any one of the product, and you will not regret it your decision.

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