SureFire 123A rechargeable batteries, specifically the SFLFP123 model, utilize Lithium Iron Phosphate (LiFePO4) chemistry with a nominal voltage of 3.2 volts. This design makes them a safer and more compatible rechargeable option for many SureFire illumination tools compared to standard 3.7V Li-ion RCR123A cells, which could potentially overvolt and damage devices designed for 3.0V primary CR123A batteries. These rechargeable cells offer significant cost savings and environmental benefits over disposable batteries.
For years, the CR123A primary (non-rechargeable) battery has been the workhorse for many high-drain electronics. However, advancements in battery technology have introduced rechargeable alternatives, offering a compelling blend of cost savings and environmental benefits. SureFire, a brand known for reliability, has entered this market with its specialized rechargeable 123A cellsLet’s explore what makes these batteries effective and how to maximize their use. For complete rechargeable batteries library on this site.
Understanding the Basics: CR123A vs. RCR123A (and SureFire’s Take)
Before discussing SureFire’s specific offering, it’s essential to clarify the landscape of “123A” sized batteries.
What is a CR123A (Primary)?
The standard CR123A is a primary (single-use) lithium manganese dioxide (LiMnO2) battery, known for its robust 3.0-volt nominal output, high capacity (often around 1500-1550mAh), and an impressive shelf life of up to 10 years or more. [cite: 3, 4, 5 (from “RCR123A vs CR123A SureFire” search), 4 (from “SureFire RCR123A voltage capacity” search)] These batteries are reliable for devices that might sit unused for long periods, like emergency flashlights. Once depleted, they are designed for proper disposal, not recharging.
What is an RCR123A/16340 (General Rechargeable)?
The term RCR123A, often interchangeable with 16340, generally refers to rechargeable lithium-ion (Li-ion) batteries of the same physical size. These cells typically boast a higher nominal voltage of 3.6 to 3.7 volts, reaching up to 4.2 volts when fully charged. [cite: 1, 2, 3, 4, 5 (from “RCR123A vs CR123A SureFire” search), 1 (from “SureFire RCR123A voltage capacity” search)] While offering the convenience of recharging, their capacity is usually lower than primary CR123As, ranging from 500-800mAh. [cite: 3, 4, 5 (from “RCR123A vs CR123A SureFire” search)]
SureFire’s SFLFP123: The LiFePO4 Advantage
SureFire 123A rechargeable batteries, identified as SFLFP123, use Lithium Iron Phosphate (LiFePO4) chemistry. These batteries have a nominal voltage of 3.2 volts. [cite: 5 (from “SureFire 123A rechargeable batteries review” search), 2 (from “SureFire RCR123A voltage capacity” search)] This slightly lower voltage, closer to the 3.0 volts of primary CR123A cells, makes them a safer and more compatible option for a wider range of SureFire’s illumination tools, including weapon lights and hands-free lights. [cite: 2 (from “SureFire 123A rechargeable batteries review” search)]
Why Voltage Matters: Device Compatibility and Safety
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| 1 | Amazon Basics 4-Bay Battery Charger for AA & AAA Rechargeable Batteries with Rechargeable AA NiMh Batteries, 4 count (Pack of 1), Type A (American) Plug, Black |
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| 2 | EBL 16 Sets AA AAA Batteries Combo with 8PCS AA 2300mAh & 8-Pack AAA 800mAh Rechargeable Batteries |
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| 3 | EBL AA 2300mAh (8 Pack) and AAA 1100mAh (8 Pack) Ni-MH Rechargeable Batteries and AA AAA Rechargeable Battery Charger with 2 USB Charging Ports |
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| 4 | Amazon Basics 16-Pack Rechargeable AA NiMH Batteries, 2000 mAh, 1.2V, Recharge up to 1000x Times, Pre-Charged |
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| 5 | POWEROWL Rechargeable AA and AAA Batteries with Fast Charger, High Capacity NiMH - 4 x 2800mAh AA & 4 x 1000mAh AAA |
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| 6 | Amazon Basics 24-Pack Rechargeable AAA NiMH Performance Batteries, 800 mAh, 1.2V, Recharge up to 1000x Times, Pre-Charged |
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| 7 | Amazon Basics 12-Pack Rechargeable AAA NiMH Performance Batteries, 800 mAh, 1.2V, Recharge up to 1000x Times, Pre-Charged |
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| 8 | Amazon Basics 12-Pack Rechargeable AA NiMH Performance Batteries, 2000 mAh, 1.2V, Recharge up to 1000x Times, Pre-Charged |
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| 9 | Amazon Basics 24-Pack Rechargeable AA NiMH Batteries, 2000 mAh, 1.2V, Recharge up to 1000x Times, Pre-Charged |
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| 10 | Amazon Basics NiMh Rechargeable Batteries (4 AA & 4 AAA) with 4 Bay Battery Charger, Type A (American) Plug, Black, 8 Count |
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The voltage difference is crucial. Using a standard 3.7V nominal (4.2V fully charged) Li-ion RCR123A in a device designed for 3.0V primary CR123A could potentially overvolt and damage the electronics, especially if the device lacks internal voltage regulation. SureFire’s deliberate choice of LiFePO4 chemistry with its 3.2V output mitigates this risk, providing a safer rechargeable alternative for their own products. [cite: 1, 5 (from “SureFire RCR123A voltage capacity” search)]
Key Specifications and Performance: What to Expect
When you choose SureFire 123A rechargeable batteries, you’re opting for a specific balance of features designed for performance and safety.
- Voltage: Their 3.2V nominal voltage is a significant factor in ensuring compatibility with SureFire’s own devices. This is a critical distinction from generic 3.7V Li-ion RCR123A cells. [cite: 2 (from “SureFire RCR123A voltage capacity” search)]
- Capacity: While specific mAh ratings for SureFire’s rechargeable 123A aren’t always prominently displayed, they generally offer lower capacity than their primary CR123A counterparts. This means you might see slightly shorter runtimes compared to a fresh disposable CR123A, especially in high-drain devices. However, the ability to recharge offsets this in the long run.
- Cycle Life: SureFire states their SFLFP123 batteries retain approximately 80% of their original capacity even after hundreds of charging cycles. [cite: 2 (from “SureFire 123A rechargeable batteries review” search)] This translates to significant cost savings over time compared to continuously buying disposable batteries.
- Self-Discharge: All batteries experience some degree of self-discharge. While modern LiFePO4 cells generally have a lower self-discharge rate than older rechargeable chemistries, it’s still good practice to top them off before critical use if they’ve been sitting for an extended period.
Charging Your SureFire 123A Rechargeable Batteries: Best Practices
Proper charging is key to both the longevity of your SureFire 123A rechargeable batteries and your safety.
Using the Right Charger
SureFire offers a dedicated charging kit for their rechargeable 123A cells, which is highly recommended as it’s specifically designed for their LiFePO4 chemistry. [cite: 3 (from “SureFire 123A rechargeable batteries review” search), 2 (from “SureFire RCR123A voltage capacity” search)] Many universal “smart chargers” designed for LiFePO4 16340/RCR123A cells can also be suitable. Look for chargers from reputable brands like Tenergy or EBL that explicitly support LiFePO4 chemistry and offer features like automatic termination to prevent overcharging. [cite: 1, 2, 3 (from “best charger for RCR123A batteries” search)]
The Charging Process
Most chargers for these batteries are straightforward. Simply insert the cells, and LED indicators will typically show the charging status. SureFire’s smart charger can fully charge two batteries in about three hours. [cite: 2 (from “SureFire RCR123A voltage capacity” search)] A green light usually signals a full charge.
Avoiding Overcharging
High-quality rechargeable batteries, including SureFire’s, often have internal protection circuitry. Dedicated smart chargers also play a crucial role by automatically terminating the charge cycle once the batteries are full. This prevents overcharging, which can degrade battery life and pose safety risks.
Safety First: Handling Your Rechargeable Power Cells
Battery safety is paramount. Rechargeable batteries, especially lithium-based ones, are powerful and require respect.
- Do NOT Mix Batteries: Never mix different types of batteries (e.g., rechargeable with primary), different brands, or even old and new batteries. This can lead to uneven discharge, overheating, and potential damage or leaks. [cite: 1, 3 (from “RCR123A battery safety tips” search)]
- Storage is Key: Store your SureFire 123A rechargeable batteries in a cool, dry place, away from direct sunlight, heat sources, and metal objects that could cause a short circuit. Keeping them in their original packaging or a dedicated battery case is ideal. [cite: 1, 3 (from “RCR123A battery safety tips” search)]
- Avoid Physical Damage: Do not disassemble, puncture, drop, or otherwise physically damage the batteries. Internal materials can be harmful, and damage can lead to overheating, explosions, or leaks. [cite: 1 (from “RCR123A battery safety tips” search)]
- Thermal Runaway: While LiFePO4 chemistry is inherently more stable than some other Li-ion types, all lithium batteries have a risk of thermal runaway if abused. Always use high-quality cells with protection circuits and appropriate chargers to mitigate this risk.
- Protection Circuits: Good quality RCR123A/16340 batteries, including SureFire’s, should feature built-in protection against over-discharge, over-charge, and short circuits. These circuits are your last line of defense against potential hazards. [cite: 2, 4 (from “RCR123A battery safety tips” search)]
“Safety isn’t just a recommendation with rechargeable batteries; it’s a non-negotiable principle,” says Dr. Elena Petrova, a leading expert in battery chemistry. “Always invest in quality, follow manufacturer guidelines, and never compromise on proper handling and storage.”
Maximizing Lifespan and Performance: Tips from an Expert
To ensure your SureFire 123A rechargeable batteries serve you well for years, consider these practical tips:
- Partial Discharges and Charges: Lithium-ion and LiFePO4 batteries generally thrive on partial charge and discharge cycles rather than deep cycles. You don’t always need to drain them completely before recharging.
- Proper Storage for Long Periods: If you plan to store your batteries for an extended time (several months or more), aim to store them at around a 50% charge level in a cool, dry place. Avoid storing them fully charged or completely drained.
- Always Check Device Compatibility: Even with SureFire’s safer 3.2V LiFePO4 cells, it’s always wise to double-check your device’s manual to confirm compatibility with rechargeable 123A batteries. This is especially true for older or non-SureFire brand devices.
The Environmental Impact and Responsible Disposal
One of the often-overlooked benefits of SureFire 123A rechargeable batteries is their positive environmental impact.
- Reducing Waste: By recharging batteries hundreds of times, you significantly reduce the amount of waste generated compared to single-use cells. This lessens the burden on landfills and conserves resources needed for manufacturing.
- Where to Recycle: Even rechargeable batteries eventually reach the end of their useful life. When they do, it’s crucial to dispose of them properly. Do not throw them in household trash. Look for local battery recycling programs or designated collection points, which are often found at electronics stores or community recycling centers. [cite: 1 (from “RCR123A battery safety tips” search)]
Conclusion
Choosing the right power source for your critical gear is a decision that impacts performance, cost, and safety. SureFire 123A rechargeable batteries, with their balanced 3.2V LiFePO4 chemistry, offer a compelling and responsible alternative to traditional primary cells, particularly for SureFire’s own high-performance illumination tools. By understanding their unique characteristics, adhering to best charging practices, and prioritizing safety, you can confidently power your devices, save money, and contribute to a more sustainable future.
At Kiedl.com, we believe that informed choices lead to empowered users. So, go ahead, make the switch to rechargeable power, but do so with knowledge and care. Your devices—and the planet—will thank you!
Charging SureFire 123A Rechargeable Batteries
Properly charge your SureFire 123A rechargeable batteries to ensure longevity and safety.
Use a charger specifically designed for LiFePO4 (Lithium Iron Phosphate) batteries, such as SureFire's dedicated kit or a reputable universal smart charger. Ensure the charger explicitly supports LiFePO4 chemistry and features automatic termination to prevent overcharging.
Place the SureFire 123A rechargeable cells into the charger. Most chargers have LED indicators that will show the charging status, typically turning green when fully charged. SureFire's smart charger can fully charge two batteries in about three hours.
Rely on the charger's automatic termination feature to stop charging once the batteries are full. High-quality rechargeable batteries often have internal protection circuitry, but a smart charger provides an additional layer of safety against overcharging, which can degrade battery life and pose risks.
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I’ve been using SureFire illumination tools for years and always hated how quickly I went through disposable CR123A batteries. Switching to the SFLFP123 rechargeable cells has been a game-changer. The cost savings are already adding up, and I appreciate not constantly throwing away batteries. They fit perfectly and power my flashlight just as reliably.
These SureFire rechargeable 123A batteries are decent, and I like the environmental benefits. However, I found the initial charge time a bit longer than I expected compared to some other rechargeable cells I’ve used for different devices. Once charged, they perform fine, but that first charge took a while. Still, it’s better than buying disposables.
I was a bit hesitant about rechargeable 123A batteries because I heard some could damage devices. But the LiFePO4 chemistry and 3.2V nominal voltage of these SureFire ones made me feel much safer. They work great in my tactical light, and I haven’t noticed any issues. Charging is straightforward, and they hold a charge well.
Finally, a safe rechargeable option for my SureFire gear! I was always worried about using 3.7V Li-ion RCR123A cells and potentially overvolting my devices. The SFLFP123 model with its specific design for compatibility is exactly what I needed. My flashlight runs perfectly, and I feel much more confident using these.