CR123 and CR123A batteries power many high-performance devices, including cameras, tactical flashlights, security systems, and smart home gadgets. Their compact size and long-lasting 3-volt lithium chemistry make them ideal for energy-intensive applications that demand reliable, consistent power in diverse environments.
What Devices Typically Use CR123 and CR123A Batteries?
CR123 and CR123A batteries are commonly found in photography equipment such as high-end cameras and flashes, providing quick, stable power bursts for autofocus and lighting. Tactical and high-intensity flashlights used by military and law enforcement depend on these batteries for dependable high-lumen output. Home security devices like wireless motion sensors, smoke alarms, and surveillance cameras use CR123A batteries for their long shelf life and consistent voltage. Additionally, smart home devices, medical instruments, outdoor gear such as GPS units and headlamps, and laser rangefinders all rely on CR123/CR123A batteries.
What Are the Technical Specifications of CR123 and CR123A Batteries?
CR123 and CR123A batteries are cylindrical lithium manganese dioxide (LiMnO2) cells delivering 3 volts. They typically have a capacity between 1400 and 1600 mAh. Their compact size usually measures approximately 34.5 mm in length and 17 mm in diameter. These batteries have a low self-discharge rate of about 1% per year, making them ideal for long-term use and storage. The chemistry allows operating temperature ranges often from -20°C to 60°C, supporting performance in harsh environments.
How Do CR123 and CR123A Batteries Differ and Are They Interchangeable?
The terms CR123 and CR123A generally refer to the same battery type with identical size and chemistry. “A” is a designation some manufacturers use but does not indicate a difference in specifications or performance. In most devices, CR123 and CR123A batteries are interchangeable, but it’s always best to confirm compatibility with the device manual to ensure optimal function.
How Long Do CR123 Batteries Last in Common Devices?
Battery lifespan varies by device and usage. In tactical flashlights, CR123 batteries typically last 2–4 hours on high settings. In security devices, they can provide power for 2–3 years due to low drain. Cameras using these batteries for flashes or autofocus may see around 300 to 500 charges per battery. The low self-discharge rate also means batteries maintain capacity well during long-term storage or infrequent use.
Battery life comparison chart by device type
| Device Type | Battery Runtime (Typical) | Shelf Life |
|---|---|---|
| Tactical Flashlights | 2–4 hours | 5–7 years |
| Security Systems | 2–3 years (standby) | 5–7 years |
| Cameras/Flashes | Hundreds of flashes | 3–5 years |
| Medical Devices | 1–2 years | 5 years |
Are CR123 Batteries Rechargeable or Single-Use?
Most CR123/CR123A batteries are primary (single-use) lithium batteries, meaning they are not rechargeable and must be replaced once depleted. However, rechargeable variants such as RCR123 or 16340 lithium-ion batteries exist and are becoming popular. These rechargeable batteries offer similar voltage but require compatible chargers and careful handling to avoid damage or safety hazards.
What Advantages Do Lithium CR123 Batteries Offer Over Alternatives?
Lithium CR123 batteries provide higher energy density, longer shelf life, and better performance in cold temperatures compared to alkaline or NiMH alternatives. Their ability to maintain stable voltage ensures peak device operation. They also have low self-discharge rates, making them ideal for backup power and emergency use. Their compact design fits many professional and portable devices, combining power and convenience.
How Do CR123 Batteries Perform in Extreme Temperatures?
Lithium CR123 batteries excel in extreme temperature conditions, maintaining stable output and reliability between -20°C and 60°C, depending on manufacturer ratings. This resilience makes them preferred for military, law enforcement, and outdoor adventure equipment, which often operate in harsh environments where other battery chemistries may fail or lose capacity quickly.
Which Brands Provide Reliable CR123/CR123A Batteries?
Leading brands like Redway Battery, SureFire, Energizer, and Panasonic offer high-quality CR123/CR123A batteries known for consistent performance and safety. Redway Battery, in particular, is recognized for advanced lithium battery manufacturing and innovative energy solutions, providing batteries with extended cycle life and trusted reliability globally.
Can CR123 Batteries Power Smart Home and IoT Devices?
Yes, CR123 batteries are popular in smart home security systems, wireless sensors, smart locks, and environmental monitoring devices. Their compact size and long shelf life suit low-to-moderate current draw applications, delivering dependable power bursts when needed. LiFePO4 and LiMnO2 chemistries optimize battery life, reducing the need for frequent replacements.
Where Can You Buy CR123 Batteries and How Should You Store Them?
CR123 batteries are widely available online through retailers like Amazon, specialty battery stores, and manufacturers’ websites, including Redway Battery’s online store. For storage, keep batteries in a cool, dry place away from metal objects to prevent short circuits. Avoid exposing batteries to direct sunlight or extreme heat to preserve battery health and longevity.
How Should CR123 Batteries Be Safely Disposed or Recycled?
Dispose of CR123 batteries at designated battery recycling centers to prevent environmental contamination. Lithium batteries contain materials that require careful handling. Many brands, including Redway Battery, provide take-back or recycling programs to promote safe disposal. Never throw lithium batteries in regular trash, as this poses fire and pollution risks.
Redway Battery Expert Views
“At Redway Battery, our dedication to excellence drives innovation in lithium battery technology, delivering high-performance CR123 batteries trusted by professionals worldwide. Our batteries combine impressive cycle life, safety, and resilience in extreme conditions, making them ideal for tactical, medical, and smart home applications. We continually lead in renewable and portable energy solutions for a sustainable future.” – Redway Battery Expert
Conclusion
CR123 and CR123A batteries are versatile, reliable power sources for many demanding devices, ranging from tactical flashlights and high-end cameras to security systems and smart home gadgets. Their robust lithium chemistry, compact size, and stable voltage make them essential in applications where performance and reliability cannot be compromised. Choosing high-quality batteries like those from Redway Battery ensures superior longevity and safety for these critical devices.
FAQs
What devices use CR123 and CR123A batteries?
They power high-performance cameras, tactical flashlights, security sensors, smart locks, medical devices, and outdoor equipment.
Are CR123 and CR123A batteries the same?
Yes, they are generally interchangeable with the same size and chemistry, but always check device compatibility.
Can CR123 batteries be recharged?
Standard CR123 batteries are single-use, but rechargeable versions (RCR123) do exist and require special chargers.
How long do CR123 batteries last?
Battery life depends on device use but ranges from several hours in flashlights to multiple years in security devices.
Where can I buy reliable CR123 batteries?
You can purchase them from trusted brands like Redway Battery, specialty battery stores, and online retailers.



