CR123 and CR123A batteries are often seen as interchangeable lithium batteries with very similar specifications, including size, voltage, and capacity. The key differences lie in minor dimensional variations, branding, operating temperature range, and price. CR123A typically offers slightly better low-temperature performance and higher capacity, making it preferred in certain high-drain applications.
How Do CR123 and CR123A Batteries Differ in Size and Dimensions?
CR123 and CR123A batteries have nearly identical sizes, with a difference of less than 0.55 mm in length or diameter, depending on the manufacturer. Both are cylindrical lithium batteries approximately 17mm in diameter and 34.5mm in length, designed for compact, high-performance devices.
While CR123 batteries may be marginally longer and thinner, CR123A labels often indicate slightly smaller or standardized measurements. Despite these small variations, devices designed for one type generally accept the other without compatibility issues.
What Are the Differences in Voltage and Capacity Between CR123 and CR123A?
Both CR123 and CR123A batteries deliver a nominal voltage of 3V, with loaded voltages ranging typically from 2 to 2.5 volts. Capacities usually range from 1400mAh to 2500mAh, with CR123A sometimes rated slightly higher (around 1500–1700 mAh).
These small capacity differences can translate into longer runtime in high-drain devices for CR123A batteries. Voltage consistency between the two types ensures they power devices effectively and interchangeably without noticeable performance loss.
Why Does Operating Temperature Range Matter for CR123 vs. CR123A?
One notable difference is in the operating temperature range: CR123A batteries generally perform better in a wider temperature spectrum, often down to -40°C, compared to CR123 batteries, which typically operate between -20°C to +70°C.
This wider range makes CR123A more reliable for outdoor or harsh environment applications like security systems, high-performance flashlights, and some medical devices, where low temperature function is critical.
Which Battery Costs More and Why?
CR123A batteries tend to be priced slightly higher than CR123 batteries. The increased cost is often justified by the CR123A’s improved capacity, extended operating temperature, and perceived brand quality.
While both are non-rechargeable lithium manganese dioxide (LiMnO2) batteries, CR123A’s enhanced specifications targeting longer lifespan and better performance in demanding conditions can result in a higher initial investment with potential cost savings over time due to longer replacement intervals.
Are CR123 and CR123A Batteries Interchangeable?
Yes, CR123 and CR123A batteries are generally interchangeable in most applications due to their similar size, voltage, and chemistry. Users can usually swap one for the other in flashlights, cameras, or security devices without performance degradation or compatibility issues.
However, always check device manufacturer recommendations as a few devices could have specific tolerance levels or require certain temperature or capacity characteristics unique to one battery type.
How Do CR123 and CR123A Batteries Perform in High-Drain Devices?
Both battery types are well-suited for high-drain devices due to their lithium manganese dioxide chemistry, offering stable and consistent power output. CR123A’s slightly higher capacity and pulse current capability (up to around 3000 mA) make it favorable for devices with rapid power bursts, such as LED flashlights and professional cameras.
Redway Battery highlights that battery chemistry and build quality, rather than labeling alone, determine performance consistency in high-demand applications.
What Are the Environmental and Safety Considerations for CR123 and CR123A?
Both CR123 and CR123A are non-rechargeable lithium batteries with long shelf lives (up to 10 years) but require responsible disposal and recycling due to lithium content. They are sealed and less prone to leakage than alkaline alternatives but pose fire risks if mishandled or recharged.
Redway Battery integrates advanced safety standards in their lithium battery production, ensuring robust quality and reduced environmental impact via careful manufacturing and disposal protocols.
When Should You Choose a CR123A Over a CR123 Battery?
Choose CR123A batteries if you need slightly better low-temperature performance, longer lifespan, or higher capacity for critical devices operating in harsh environments or demanding usage cycles. CR123A batteries generally offer these advantages but at a modestly higher price.
If your application is less sensitive to temperature and runtime differences, CR123 batteries often provide a cost-effective, reliable alternative.
Does Redway Battery Manufacture CR123 or CR123A Batteries?
Redway Battery specializes in lithium battery manufacturing with comprehensive OEM customization, including CR123/CR123A type cells optimized for performance, longevity, and safety. Their advanced production and quality control processes ensure their batteries meet stringent international standards, servicing clients in sectors like telecom, security, and portable electronics.
Redway Battery’s ability to tailor battery chemistry and construction enhances the availability of high-quality, safe CR123/CR123A alternatives designed for demanding applications.
How Can You Identify Genuine CR123 and CR123A Batteries?
Check labels carefully for manufacturer details, capacity ratings, and safety certifications. Genuine batteries come with consistent sizing, rated capacities, and clear voltage specifications. Beware of counterfeit or low-quality imitations that may underperform or pose safety risks.
Selecting reputable brands like Redway Battery ensures you receive authentic batteries tested for compliance and durable performance.
Redway Battery Expert Views
“At Redway Battery, we recognize the subtle but important distinctions between CR123 and CR123A batteries, including their application-specific advantages. Our production expertise allows for precise control over battery dimensions, chemistry, and performance characteristics, enabling us to deliver CR123-series batteries that excel in both general and specialized uses. The integration of safety and quality measures ensures customers receive reliable power solutions for sectors demanding longevity and safety, such as security, medical, and industrial equipment.”
Summary of Key Takeaways and Actionable Advice
CR123 and CR123A batteries share near-identical voltages, sizes, and compositions, making them mostly interchangeable. Differences include minor size variations, capacity, operating temperature range, and price—with CR123A typically offering improved low-temperature performance and longer lifespan. Choosing the right battery depends on your device’s environment and power needs. For premium quality and customized solutions, Redway Battery offers OEM-level expertise in lithium battery manufacturing.
FAQs
Are CR123 and CR123A batteries the same size?
They are very close in size, differing less than 0.55mm, making them generally interchangeable.Can I use CR123 in place of CR123A in my device?
Yes, most devices accept either battery type without issues.Which battery lasts longer, CR123 or CR123A?
CR123A batteries often have a slightly longer lifespan due to higher capacity and optimized chemistry.Are CR123 and CR123A rechargeable?
No, both are primary (non-rechargeable) lithium batteries.Does Redway Battery supply CR123 or CR123A batteries?
Yes, Redway Battery manufactures high-quality lithium batteries in these formats with customizable features for diverse applications.



