CR123A Battery: A Comprehensive Guide
What is a CR123A Battery?
The CR123A battery is a high-performance, cylindrical lithium battery commonly used in a variety of electronic devices. It utilizes lithium manganese dioxide (LiMnO2) chemistry, providing a nominal voltage of 3 volts. The designation "CR" signifies the use of lithium chemistry, while the numbers correspond to the battery's size—specifically, the CR123A measures approximately 34.5 mm in length and 17 mm in diameter.
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These batteries typically offer a capacity range from 1,500 mAh to 2,500 mAh, allowing them to power devices that draw around 100 mA for up to 30 hours. They can handle continuous currents between 1,500 mA and 2,500 mA, with pulse currents reaching up to 3,000 mA, making them ideal for high-drain devices such as digital cameras and high-performance LED flashlights. CR123A batteries are widely used in photography equipment due to their reliability and long lifespan, in security systems for their extended replacement intervals (up to three years), in medical devices and military equipment for their robustness, and in various consumer electronics like flashlights and remote controls.
CR123A Battery Dimensions

CR123A Battery Specifications
| Specification | Details |
| Chemical Composition | Lithium Manganese Dioxide (Li/MnO2) |
| Nominal Voltage | 3.0 Volts |
| Typical Capacity | 1,500 - 2,500 mAh |
| Dimensions | Diameter: 17.0 mm |
| Height: 33.4 - 34.5 mm | |
| Weight | Approximately 16 - 17 grams |
| Operating Temperature Range | -40°C to +70°C (-40°F to +158°F) |
| Storage Temperature Range | -40°C to +60°C (-40°F to +140°F) |
| Max Continuous Current | Up to 1,500 mA |
| Max Pulse Current | Up to 3,000 mA |
| Discharge Rate | Typically rated at 20 mA |
| Shelf Life | Up to 10 years under optimal conditions |
| Termination Style | Button Top (Extending) |
| Applications | Cameras, flashlights, security systems, medical devices, toys, and more |
| Equivalents | CR123, DL123A, EL123A, BR2/3A, K123LA |
Primary Features of CR123A Battery
The CR123A battery is a widely used non-rechargeable lithium battery known for its high energy density and reliability. Here are the key features:
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1. Specifications:
Type: Non-rechargeable primary lithium battery.
Voltage: Nominal voltage of 3.0 volts.
Capacity: Typically ranges from 1,550 to 2,500 milliampere hours (mAh) depending on the manufacturer.
Size: Approximately 34 mm in length and 17 mm in diameter.
Weight: About 17 grams.
Chemistry: Lithium manganese dioxide (LiMnO2) or similar.
Operating Temperature Range: Generally between -20°C to +60°C (-4°F to +140°F) or even up to 70°C in some cases.
Shelf Life: Can last up to ten years if stored properly.
2. Performance Characteristics:
High Energy Density: The CR123A battery offers a large energy storage capacity, making it suitable for devices that require substantial power in a compact form.
Consistent Voltage Output: It maintains a stable voltage throughout its discharge cycle, which is crucial for devices requiring reliable power, such as cameras and security systems.
High Discharge Rate: Capable of delivering high current bursts, which is beneficial for high-performance devices like flashlights and digital cameras.
3. Applications:
CR123A batteries are commonly used in:
- Security systems
- Digital cameras
- Flashlights
- Medical devices
- Various household electronics such as toys and games
4. Safety Features:
Many CR123A batteries include Positive Temperature Coefficient (PTC) protection, which prevents overcurrent conditions, enhancing safety and reliability during use.
CR123A Battery Applications
The CR123A battery is a versatile power source widely utilized in various devices due to its high energy density, long shelf life, and reliable performance. Here are the primary applications:
1. Photography and Videography:
Digital Cameras: CR123A batteries are commonly used in digital cameras, providing a stable power source for capturing images and videos.
Camera Flashes: They are also utilized in camera flash units, ensuring quick recharge times and consistent performance.
2. Security Systems:
Smoke Detectors: These batteries are frequently found in smoke alarms, offering long-lasting backup power for safety devices.
Security Cameras: CR123A batteries power home and commercial security cameras, ensuring reliable monitoring and surveillance.
3. Tactical and Outdoor Equipment:
Flashlights: High-performance tactical flashlights often use CR123A batteries for their ability to deliver bright, sustained illumination.
GPS Devices: Outdoor navigation tools benefit from the battery's compact size and steady power output.
4. Medical Devices:
Portable Medical Equipment: Devices such as blood glucose meters and heart rate monitors utilize CR123A batteries due to their reliability and long operational life.
5. Military and Professional Equipment:
Night Vision Devices: Military applications often include night vision goggles that require the high discharge capabilities of CR123A batteries.
Communication Tools: Portable radios and other communication devices rely on these batteries for consistent power during critical operations.
6. Consumer Electronics:
Remote Controls and Toys: Many electronic gadgets, including remote controls and various toys, use CR123A batteries for their compact size and high energy output.
In summary, the CR123A battery is essential in numerous applications across photography, security, medical devices, outdoor equipment, military technology, and consumer electronics due to its high performance and reliability.
Advantages of Using CR123A Battery
The CR123A battery is favored in various applications due to its numerous advantages. Here are the key benefits:

1. High Energy Density:
CR123A batteries possess a high energy density, allowing them to store a significant amount of energy in a compact size. This makes them ideal for portable devices that require substantial power without adding bulk.
2. Long Shelf Life:
These batteries can maintain their charge for extended periods, often up to ten years when stored properly. This longevity ensures that they are ready for use in emergency devices and infrequently used equipment.
3. Stable Voltage Output:
CR123A batteries provide a consistent voltage output throughout their discharge cycle, which is crucial for devices that rely on stable power for optimal performance, such as cameras and security systems.
4. Wide Operating Temperature Range:
They can function effectively in extreme temperatures, typically ranging from -40°C to 85°C (-40°F to 185°F). This resilience makes them suitable for outdoor applications and harsh environments.
5. No Memory Effect:
As non-rechargeable batteries, CR123A batteries do not suffer from memory effects, allowing users to replace them whenever needed without concerns about performance degradation.
6. Safety Features:
Many CR123A batteries include Positive Temperature Coefficient (PTC) protection circuits, which prevent overcurrent and overheating, enhancing safety during use.
7. Lightweight and Compact Design:
The size and weight of CR123A batteries make them easy to integrate into various devices without adding significant bulk, making them a preferred choice for sleek electronics.
8. Resistance to Leakage:
Unlike alkaline batteries, CR123A batteries are less prone to leakage, which can damage devices and reduce their lifespan.
CR123A Battery Equivalent
The CR123A battery, a popular lithium primary battery, has several equivalents and substitutes that can be used depending on the device's compatibility. Here are the primary alternatives:
1. 16340 Battery:
The 16340 battery is essentially the same size as the CR123A but is a lithium-ion rechargeable cell. It has a nominal voltage of about 3.6 to 3.7 volts, which is higher than the CR123A's nominal voltage of 3.0 volts. While it can fit in most devices designed for CR123A batteries, users should check the device specifications to ensure it can handle the higher voltage without damage.
2. RCR123A Battery:
The RCR123A (or 16340) is another rechargeable alternative that can be used in place of CR123A batteries. However, it also has a higher voltage (4.2 volts when fully charged), which may not be suitable for all devices. It is crucial to verify that the device can accommodate this voltage to avoid potential damage.
3. 18650 Battery:
For devices that require two CR123A batteries, a single 18650 battery can often serve as a substitute if the device supports it. The 18650 offers a higher capacity and is rechargeable, making it a cost-effective option over time.
4. 16650 Battery:
The 16650 battery is another rechargeable option that can replace two CR123A batteries in certain devices. It has similar dimensions and provides a good balance of capacity and voltage, making it suitable for many applications.
5. Other Lithium Batteries:
While there are no direct equivalents to the CR123A in terms of chemistry and performance, some other lithium batteries may fit physically but may not provide the same voltage or capacity characteristics. Users should exercise caution when using these alternatives to avoid damaging their devices.
In summary, while there are several alternatives to the CR123A battery, including 16340, RCR123A, 18650, and 16650 batteries, it is essential to check device compatibility regarding voltage and size before substituting these batteries.
Is CR123A Battery Rechargeable?
The CR123A battery is primarily a non-rechargeable lithium primary battery, meaning it cannot be recharged once depleted. However, there are rechargeable alternatives available that can be used in place of CR123A batteries. For instance, the RCR123A and 16340 batteries are lithium-ion rechargeable options that fit the same dimensions but operate at a higher voltage (typically around 3.6 to 4.2 volts).
Additionally, newer products like the Paleblue CR123A USB-C rechargeable battery offer a convenient solution, allowing users to recharge directly via a USB-C port. These rechargeable options provide similar performance while reducing waste and long-term costs associated with single-use batteries. It is essential to ensure that any rechargeable alternative is compatible with the device in which it will be used to avoid potential damage.
Does Duracell 123 Replace CR123A Battery?
Yes, the Duracell 123 battery can replace the CR123A battery. The Duracell 123, also known as the PL123A or DL123A, is designed to be compatible with a variety of devices that typically use CR123A batteries. Both types have the same voltage (3.0 volts) and similar dimensions, making them interchangeable in most applications. The Duracell 123 battery provides reliable power for devices such as security systems, digital cameras, and flashlights, and it has a long shelf life of up to 10 years, ensuring that it is ready for use when needed.
How Long Does a CR123A Battery Last?
The lifespan of a CR123A battery varies significantly based on the device it powers and its usage conditions. Generally, these batteries have a shelf life of up to 10 years, meaning they can be stored for a long time without significant loss of charge.
In terms of operational life:
Low-Drain Devices: In devices like security sensors or smoke detectors, a CR123A battery can last between 1 to 3 years depending on usage and settings.
Medium-Drain Devices: In devices such as flashlights and cameras, the battery may last from 6 months to 1 year with regular use.
High-Drain Devices: For high-performance applications, like tactical flashlights or night-vision goggles, CR123A batteries may only last 1 to 2 hours under continuous use due to their high energy demands.
Environmental factors also play a crucial role; extreme temperatures can affect battery performance and lifespan. Overall, the actual duration a CR123A battery lasts will depend on the specific application and usage patterns.
CR123 vs CR123A: Which One is Better?
The CR123 and CR123A batteries are often used interchangeably, but there are subtle differences between them.
Key Comparisons
1. Size and Dimensions:
CR123: Generally longer and thinner than the CR123A, with a size variation of less than 0.55 mm.
CR123A: Approximately 34.5 mm in length and 17 mm in diameter, making it slightly more compact.
2. Voltage:
Both batteries have a nominal voltage of 3 volts, providing consistent power output for devices.
3. Capacity:
The capacity for both types typically ranges from 1,400 mAh to 2,500 mAh, depending on the manufacturer and specific battery model.
4. Chemistry:
Both batteries use lithium manganese dioxide (LiMnO2), which offers high energy density and stable performance.
5. Shelf Life:
Both CR123 and CR123A batteries have a long shelf life of up to 10 years when stored properly.
6. Operating Temperature:
The CR123A generally performs better in lower temperatures compared to the standard CR123.
In essence, the choice between CR123 and CR123A often comes down to manufacturer labeling rather than significant performance differences. Both batteries are designed for high-drain devices like digital cameras and flashlights, making them suitable for similar applications. Users can typically use either battery interchangeably, but it's advisable to check device specifications for optimal compatibility.
Where to buy CR123A Batteries?
CR123A batteries are quite popular and widely used. This indicates that these batteries are produced by a wide range of manufacturers and sold by a wide range of shops. It's crucial to remember that not all CR123A batteries are made equally, and not all merchants share the same commitment to excellence. It's crucial to only buy batteries from a highly recognized retailer that carries the best brands in order to avoid low-quality or, worse, counterfeit batteries.
As a customer-focused online retailer, Ersa Electronics strives to improve our offerings and give clients a customized platform so that, instead of frantically searching for electrical parts throughout the globe, purchasers can simply finish their procurement with a few clicks. For your question, Ersa Electronics will offer a range of battery products.
CR123A Battery Datasheet
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