At Our Battery Store, we understand the importance of reliable power sources for your gadgets and devices. That’s why we want to provide an in-depth guide to the popular CR123A battery. Whether you need it for your flashlight, camera, or other electronics, this guide will ensure you have all the essential information to make the right choice.

The CR123A battery is a cylindrical cell battery that uses lithium chemistry. It is widely used and trusted by renowned brands, including Panasonic, Duracell, Energizer, and Tenergy. Its compact size and high energy density make it an ideal choice for various applications.

This comprehensive guide will cover everything you need to know about the CR123A battery, from its technical specifications to its lifespan and suitable alternatives. Let’s dive in and explore the world of CR123A batteries!

Key Takeaways:

  • The CR123A battery is a popular cylindrical cell battery with lithium chemistry.
  • It is widely used and produced by brands such as Panasonic, Duracell, Energizer, and Tenergy.
  • The CR123A battery is not rechargeable and should not be attempted to be recharged.
  • Its service life depends on usage and varies in different devices and applications.
  • While there are no direct equivalents to the CR123A battery, alternative batteries with similar sizes exist.

CR123A batteries are non-rechargeable batteries that contain lithium 3.0 volts, have long shelf lives, high capacities, and low internal resistance, and are widely used in all sorts of devices that need short bursts of power, including standby and backup devices.

Many battery brands manufacture CR123A batteries, often under different labels.

The LiMnO2 3.0 volt CR123A battery has the exact dimensions as the LiMnO2 3.0 volt CR123A battery but is formulated differently, with differing features and specifications.

Specifications and Features of CR123A Batteries

Lithium Manganese Dioxide (LiMnO2) CR123A is a non-rechargeable battery that operates at 3.0 volts and has a nominal capacity of approximately 1500 mAh.

CR123A batteries have dimensions (H x D) of 34.5 x 17 mm (*1.3583 x 0.6693 inches) and weigh*16-17 grams (~0.60 ounces).

The CR123A battery also features a meager self-discharge rate, sometimes as low as 1% per year, ensuring it will last a very long.

The CR123A battery is trendy in various devices, including cameras, flashlights, toys, security systems, dog collars, and similar devices.

When you label a lithium battery, you have to mark it with a lot of information. The information you must put on the label is called the part number. The part number has to be written in a certain way. For example, the part number for a CR123A battery is CR123A.

It can, however, confuse and even cause issues with devices powered by such batteries if similar labels are used to identify different battery chemistries.

Batteries 34.5 x 17.0 mm, non-rechargeable

These are ‘standard’ lithium 3.0V CR123A batteries, which are not rechargeable, measuring 34.5 x 17.0 mm.

CR-123A, CR17345, CR123, DL123A, and similar products are additional non-rechargeable lithium 3.0V batteries.

However, many manufacturers also use the standard CR123A label to avoid confusion to the greatest extent possible.

Rechargeable Batteries with a dimension of 34.5 x 17.0 mm

The RCR123A, 17345, 17340, 17335, and 16340 are commonly used labels depending on the exact dimensions of the battery, which may differ by just a fraction of a millimeter and still fit into the standard CR123A battery compartments.

There are 650-700 mAh and 3.2 – 3.7 volt RCR123A batteries, but they can still be recharged hundreds of times (chemistry dependent).

Since they do not self-discharge as fast as CR123A batteries, you need to recharge them periodically, even if you are not using them.

The RCR123A and CR123A batteries differ in voltage, so they aren’t always compatible – most devices can accept both types of batteries, but before replacing CR123A batteries with RCR123A batteries, check your device’s Owner’s Guide.

Unlike unprotected RCR123A batteries, protected RCR123A batteries have electronic boards that monitor battery parameters and prevent undesirable events such as over-discharge, over-charge, overload, and short-circuit.

The best RCR123A batteries should always be protected over unprotected RCR123A batteries. Therefore, only charge them with chargers designed for such storms.

RCR123A vs. LiR17335 Battery

There’s only one difference between LiR17335 and RCR123A batteries, which is the size:

  • The LiR17335 has dimensions of 33.5 x 17.0 mm,
  • The RCR123A has dimensions of 34.5 x 17.0mm.

Physically, there is very little difference, just a 1 mm height difference, and many manufacturers don’t even bother to use different labels on these batteries – they stamp RCR123A on them.

You will find a LiR17335 battery on the internet; it is the same as an RCR123A battery, just perhaps a little shorter.

read Next – How To Clean A Laser Mouse? – Mouse Cleaning Guide

RCR123A vs. 17340 Battery

There are several similarities between the 17340 battery and the RCR123A battery regarding how they function. They only have slightly different dimensions, however:

  • The dimensions of 17340 are 34.0 x 17.0 mm,
  • The RCR123A has dimensions of 34.5 x 17.0mm.

Physical differences, in practice, are often not as significant as the manufacturing process accuracy of certain brands.

You should pay attention to the exact chemistry type (output voltage) if You run across a 17340 RCR123A battery.

Read Next – Best Laptop Under $1000 In 2021

A comparison of BR17335 with BR-2/3A and CR123A battery

There is no difference in the width between the CR123A and A-size batteries, but the CR123A has *2/3 of the height of the A-size battery:

  • A CR123A battery measures 34.5 mm by 17.0 mm,
  • An A-size battery measures 50.0 x 17.0 mm.
  • Two-thirds of 50 millimeters equals 33.333 millimeters.

Because of this, 2/3 A batteries such as CR123A are sometimes listed as 34.5 x 17.0 mm batteries.

As BR batteries, they are non-rechargeable carbon-monofluoride lithium batteries, and they have nominal voltages between 2.8-3.0 volts, cutoff voltages between 2.0-2.25 volts, and 1200 mAh.

However, carbon-monofluoride lithium batteries have an extensive temperature range and have meager self-discharge rates, often below 1% annually.

BR-2/3A and BR17335 lithium batteries are often carbon-monofluoride lithium batteries, denoting their chemistry and physical size.

How to Choose Replacement Batteries?

You must be careful when replacing batteries. Even though finding a new one with the same dimensions may seem straightforward, the stakes are high.

You can damage the device if you choose the wrong output or chemistry. Replacing a lithium battery with another lithium-chemistry battery is usually only possible.

Secondly, if the machine drains the battery beyond its capacity, there is a risk of damage to the battery. Finally, the manufacturer’s specifications may also prevent compatibility between some brands.

You could lose money if your batteries do not work, which would be the best-case scenario. 

Be sure to think about some essential factors before taking the plunge, such as:

Non-rechargeable versus rechargeable

However, it’s not always the best idea to be able to avoid buying replacement batteries. 

Most rechargeable batteries cannot handle the higher voltage of some devices. If you are looking for a replacement, stick with Duracell 123 batteries.

Read Next – Best Laptops For X Plane 

The output of the device 

Lithium cells are the best rechargeable equivalent of 123 batteries for high-output devices like your camera. 

The Duracell 123 battery, for example, has a long-lasting power of over ten years, even for low-output devices.

The batteries need only be replaced a few times over the device’s lifetime so they won’t need a rechargeable one.

Read Next – Top 10 Best Gaming Laptops Under $400

Technical Specifications of the CR123A Battery

The CR123A Battery is a versatile cylindrical cell battery with a lithium chemistry. It is commonly used in various electronic devices, such as digital cameras, flashlights, and security systems. The CR123A Battery is known for its reliable performance and long shelf life.

The CR123A Battery Specifications are as follows:

  • Nominal Voltage: 3.2-3.3 Volts
  • Capacity: Approximately 1550 mAh
  • Operating Temperature Range: -20°C to 75°C
  • Height: 34.2 mm
  • Diameter: 17.0 mm
  • Chemistry: Lithium Manganese Dioxide

The CR123A Battery offers a reliable power source for a variety of applications. Its high capacity ensures a longer battery life, allowing users to enjoy uninterrupted usage. The operating temperature range of -20 °C to 75°C allows the CR123A Battery to perform even in extreme weather conditions.

Are CR123A Batteries Rechargeable?

No, CR123A Batteries are not rechargeable. They are primary batteries, which means they are disposable and not meant to be recharged. Attempting to recharge a CR123A Battery can be hazardous and may cause damage or harm. However, there are rechargeable batteries with the exact dimensions, such as the 16340 battery, made of lithium-ion chemistry.

If you’re looking for a rechargeable alternative to the CR123A Battery, the 16340 battery is a popular choice. It offers the convenience of rechargeability and can be used in devices that require the CR123A Battery. However, it’s important to note that although the 16340 battery shares the exact dimensions, it may not provide the same performance as the CR123A Battery. It’s always recommended to check the specifications and compatibility of the battery with your device before making a purchase.

How Long Does a CR123A Battery Last?

The service life of a CR123A Battery can vary depending on the manufacturing quality and usage. The duration of a CR123A Battery is influenced by different factors, such as the specific device it powers and the energy requirements of that device. In applications that require large amounts of energy, such as high-powered flashlights or security cameras, the CR123A Battery may last less than a month.

These devices draw significant power from the battery, resulting in a shorter lifespan. On the other hand, in more passive usage scenarios, such as low-power sensors or remote controls, the CR123A Battery can last over a year. These devices have lower energy demands, allowing the battery to last longer. Ultimately, the time a CR123A Battery lasts depends on the specific requirements of the device it powers. Understanding the energy needs of your device and choosing the appropriate battery can help maximize its lifespan.

What Battery Is Equivalent To The CR123A Battery?

While the CR123A Battery does not have a direct equivalent, there are alternative batteries with similar sizes and different chemistries. One such battery is the 16340 battery. It shares the exact dimensions as the CR123A Battery but uses Lithium-Ion chemistry instead. However, it’s important to note that these alternative batteries may not offer the same performance or lifespan as the CR123A Battery.

Is There a Difference Between CR123 and CR123A Batteries?

The CR123 and CR123A batteries are the same, but the designations come from different manufacturers. The more common name for this type of battery is CR123A, which is the designation provided by Panasonic, the largest producer of CR123A batteries.

CR123 Battery CR123A Battery
Designation by other manufacturers Designation by Panasonic
Slightly less commonly used More commonly used
Same specifications and performance Same specifications and performance
Compatible with devices requiring CR123A batteries Compatible with devices requiring CR123 batteries


As shown in the table above, there is no functional difference between the CR123 and CR123A batteries. Both batteries have the exact specifications and performance and can be used interchangeably in devices requiring either. However, the CR123A designation is more commonly used and recognized in the industry.

Are CR2 Batteries the Same as CR123A?

No, CR2 batteries are not the same as CR123A batteries. CR2 batteries are slightly shorter and will not fit most applications requiring a CR123A battery. However, CR2 and CR123A batteries are cylindrical and use lithium manganese dioxide chemistry.

Both batteries have a voltage of 3 volts, but their size differences make them non-interchangeable. While CR123A batteries are commonly used in various devices, CR2 batteries are typically suitable for cameras and other specific applications.

Where to Buy CR123A Batteries?

CR123A batteries are widely available from various manufacturers and retailers. When purchasing CR123A batteries, choosing reputable retailers to ensure high quality and avoid counterfeit products is essential.

One highly reputable retailer that offers a wide variety of CR123A batteries from world-renowned manufacturers is At, you can find various options to suit your specific needs and applications.

By choosing, you can be confident in the authenticity and performance of the CR123A batteries you purchase. Their selection includes top brands and reliable options to power your devices with peace of mind.


In summary, the CR123A Battery is a widely used cylindrical cell battery with lithium chemistry. It is not rechargeable but has alternative batteries with similar sizes, such as the 16340 battery. The lifespan of a CR123A battery depends on usage, with more energy-intensive applications resulting in a shorter battery life. Therefore, selecting the appropriate battery for each specific device’s requirements is crucial.

When purchasing CR123A batteries, it is essential to buy from reputable retailers to ensure high-quality products. offers a wide range of CR123A batteries from renowned manufacturers like Panasonic, Duracell, Energizer, and Tenergy. You can trust us to provide reliable and long-lasting batteries to power your devices.

Whether you need CR123A batteries for flashlights, cameras, motion sensors, or other devices, look no further than We are committed to delivering excellent products and exceptional customer service to meet all your battery needs. Shop with us and power your devices with confidence.


Are there any direct equivalents to the CR123A Battery?

While there are no direct equivalents to the CR123A Battery, there are batteries with similar sizes and different chemistries, like the 16340 battery.

What is the difference between CR123 and CR123A batteries?

The CR123 and CR123A batteries are precisely the same. The designations come from different manufacturers but refer to the same battery.

Can I use CR2 batteries instead of CR123A batteries?

No, CR2 batteries are not the same as CR123A batteries. CR2 batteries are slightly shorter and will not fit most applications requiring a CR123A battery.

Where can I purchase CR123A batteries?

CR123A batteries are widely available from various manufacturers and retailers. Reputable retailers like offer CR123A batteries from world-renowned brands.

Source Links

[content-egg module=Amazon template=item_simple]

Previous articleBest Chromebooks For Developers – Top 5 List For 2024
Next articleBest Dell Desktop Computers Available in 2024
Kevin Johnson
Hi, I'm Kevin Johnson, an author for I'm obsessed with all things related to computer monitors, from LCDs to LEDs, touch screens, and gaming. I've been writing about these topics for years and am passionate about helping people learn more about the latest in computer monitor technology. From selecting the right monitor for your needs to troubleshooting any issues you might be experiencing, I'm always here to provide helpful guidance. I always look for the latest monitors to share all my findings with our readers. I am a computer geek and proud of it. From building my custom rig to figuring out what's wrong with your PC, you can count on me for top-notch service at an affordable price. Whether you're looking for someone who knows his way around technology or wants help fixing the basics, like setting up email accounts, I'm here to serve. So if you need a reliable tech support professional in Denver, call Kevin today!