CR123 vs CR123A Batteries: Is There a Difference? - Comparison Guide
CR123 vs CR123A Batteries

CR123 vs CR123A Batteries: Is There a Difference?

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Batteries are an essential component in many electronic devices, providing the necessary power to keep them functioning. Among the different types of batteries available in the market, lithium batteries are among the most popular, thanks to their high energy density and long shelf life. Within the lithium battery category, the CR123 and CR123A batteries are two of the most widely used types.

These batteries are commonly used in high-drain devices that require reliable and consistent performance, such as digital cameras, flashlights, and tactical gear. Due to their compact size and high energy output, they are also popular in the field of home security systems, smoke detectors, and medical equipment.

In this article, we will delve deeper into the differences (or rather similarities) between these two batteries, exploring their performance, size, cost, and other factors. By the end of this article, you should have a better understanding of these batteries and be able to make an informed decision about which one is best suited for your needs.

Differences Between CR123 and CR123A

To begin with, let’s state it directly (and later we’ll go through each item separately): The biggest difference between CR123 and CR123A batteries is actually the letter A. The explanation is simple, 123 batteries are essentially the same (or very, very similar). They mainly differ in the name depending on the manufacturer:

  • Energizer – 123
  • Rayovac – 123A
  • Duracell – CR123
  • Panasonic – CR123A

There are some minor differences among them, which are not significant, and these differences depend on who manufactures the battery, and which brand it is. Was this enough information for you so far? Below are the 4 most popular 123 batteries on the market. Enjoy.


Both CR123 and CR123A batteries are 3-volt lithium batteries that offer a high energy output and long shelf life. They are designed to deliver consistent and reliable performance, making them ideal for use in high-drain devices such as digital cameras, flashlights, and tactical gear.


In terms of size, both batteries are identical. They measure 17mm in diameter and 34mm in length, with a weight of around 16g.


The price of 123 batteries depends on their manufacturer or brand. There is no clear difference in the price between CR123 and CR123A batteries.


Here is one difference we have found while preparing this article for you: The CR123A battery is more commonly used in high-performance devices and is, therefore, more readily available in speciality stores and online retailers.

Shelf Life

Both CR123 and CR123A batteries have an impressive shelf life of up to 10 years. This means that they can be stored for extended periods of time without losing their charge or performance.

Environmental Impact

Both batteries are considered to be environmentally friendly, as they do not contain any toxic materials such as mercury or cadmium. However, they are not rechargeable, which means that they need to be disposed of properly once they have reached the end of their life cycle.


The conclusion of the CR123 vs 123A dilemma is very simple: They are the same batteries that can be found under different names due to branding. Now that we have resolved that dilemma, I present to you my recommendations for the best buy 123 batteries.

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