Best 21700 Battery For Flashlight (2024 Update)
If you're looking for a high-quality battery to power your flashlight, then you're in the right place. Choosing the best 21700 battery for your flashlight can make all the difference when it comes to performance and lifespan. With so many options available, it's important to know what factors to consider before making your purchase.
First, it's essential to check the battery's capacity and compatibility with your flashlight's voltage requirements. A higher battery capacity will allow for longer usage times and better overall performance. The battery's discharge rate is also an important factor to consider, as it can affect the flashlight's beam intensity. Additionally, it's important to consider the battery's life span and durability, as well as any necessary safety features.
If you're someone who uses their flashlight often, it's important to invest in a high-quality and reliable battery. Consider the following questions: Does the battery have a reputable brand name with positive customer reviews? Is the battery within your budget and offers good value for money? Does the battery have any additional features that would be useful for your flashlight? By answering these questions, you can ensure that you make a well-informed decision and choose the best 21700 battery for your flashlight.
10 Best 21700 Battery For Flashlight
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This product is ideal for providing a powerful and compact flashlight with rechargeable batteries for everyday carry or outdoor activities.
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Ideal for outdoor activities including camping, hiking, hunting, fishing, and emergency situations with its super bright and water-resistant features.
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Ideal for outdoor activities, high-performance illumination and heavy-duty tasks requiring a durable flashlight with long-lasting battery.
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The 21700 rechargeable battery is ideal for powering various devices such as flashlights and other electronics.
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It is an ideal rechargeable battery for various flashlights with a battery organizer included.
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Ideal for powering household items like flashlights, doorbells, and toys with its efficient and rechargeable 5000mAh capacity.
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This flashlight is ideal for everyday carrying and outdoor activities with its high brightness and durable design.
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It is ideal for powering LED flashlights and various electronic devices.
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The product is ideal for hunting and outdoor activities due to its high lumens, rechargeable battery, offset mount, and wrench.
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Ideal for outdoor activities such as camping, hiking and fishing, providing high lumens and rechargeable capabilities with a user-friendly interface.
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1. Nitecore E4k Compact Flashlight – 4400 Lumens
The NITECORE E4K is a compact yet powerful flashlight that boasts 4 x CREE XP-L2 V6 LEDs with a lifespan of 50,000 hours. This flashlight is perfect for EDC (Everyday Carry), trekking, camping, and various outdoor activities as it is capable of emitting a blazing output of 4,400 lumens from a palm-sized body. It has a max peak beam intensity of 11,100cd and can throw light up to 211 meters, making it ideal for illuminating even the most distant objects.
The E4K features independently controlled quadruple LEDs and is powered by a constant current circuit that provides a durable usage with guaranteed safety. It comes with an NL2150HPR battery that is recommended to be used with a discharge current over 15A. This battery provides an ultra-long runtime of up to 700 hours, with consistent usage for up to 30 days on ULTRALOW. The integrated ATR technology regulates the output of the E4K according to the working condition and ambient environment to maintain optimal performance.
Designed specifically for outdoor applications, the E4K has a one-hand operable side switch that has a wearproof silicone cover, making it friendly for glove users. With 5 brightness levels, 3 special modes, and dual user modes, this flashlight offers direct access to TURBO/STROBE and serves as the best lighting tool for multiple scenarios. The included two-way clip also enables additional carrying ways to be clipped in the pocket, backpack, or belt.
In addition to the flashlight, the package includes two extra Nitecore rechargeable Li-ion batteries (NL2150HPR 5,000mAh), a USB-C charging cable, clip, lanyard, spare O-ring, and holster. With its impressive features and accessories, the NITECORE E4K is a reliable and versatile flashlight that is perfect for both personal and professional use.
2. Sofibright Usb-C Torch: 2000 Lumens Of Adventure!
The Sofirn SP35 handheld flashlight is a powerful and reliable lighting tool that boasts a non-diminishing super bright output. Equipped with an SST40 LED, it can produce up to 2000 lumens of light that can reach a distance of 1089 feet (332 meters) on Turbo mode. This makes it ideal for lighting up large spaces such as yards or football fields.
The SP35's constant buck driver ensures that it can maintain a stable brightness for as long as the battery can last. It also features USB-C fast charging capability, which allows it to be fully charged in just 3 hours using a 2A adapter (not included). On medium mode (400LM), it can run for up to 7 hours. The switch LED turns from flashing red to steady green when charging is complete.
The flashlight offers 4 different modes (Eco/Low/Medium/High) that can be easily changed according to your needs. It also has a brightness selection function that allows you to adjust the brightness level between 1LM to 2000LM. For emergency situations, the SP35 has a triple-click Strobe mode that can be activated with ease.
Built to withstand harsh environments, the SP35 has a high-strength, impact-resistant aerospace-grade aluminum body and is IPX8 water-resistant. It also features Advanced Temperature Regulation (ATR) technology that prevents over-heating, making it safe to touch even after hours of usage.
In the package, you will receive the SP35 flashlight, a battery (inserted, please unscrew the tail cap, remove the insulating paper before using), a TypeC charging cable, and a manual. The product also comes with helpful customer service to ensure a satisfactory user experience.
3. Convoy M21c With Sft40 White Tint,8amps 12 Groups,21700 Flashlight (No Battery)
The M21C is a powerful flashlight that requires a single 21700 lithium battery to operate, which is not included with the product. It boasts an impressive maximum output of up to 2000LM, with a beam distance of 981 meters and a peak beam intensity of 241KCD.
It's worth noting that while the M21C shares a similar beam range with the KW CULPM1.TG, its center spot diameter is larger. This feature enhances the flashlight's ability to provide more widespread illumination in dark environments.
4. Powerpack: Rechargeable Li-Ion Batteries (2 Pack)
Looking for a compact and efficient device to meet your needs? Look no further than this incredible product! With dimensions of 70mm x 21mm x 21mm (2.75 x 0.82 x 0.82 inches), this device is perfectly sized to fit in the palm of your hand, making it ideal for those who are always on the go.
One thing to keep in mind when using this product is that the battery must be fully charged before its first use. This will ensure that you get the most out of your device and that it performs at its best.
So why wait? Whether you're looking for a reliable and powerful device for personal or professional use, this product is the perfect choice. With its compact size and top-notch performance, it's sure to exceed your expectations and deliver the results you need. So why not give it a try today and experience the difference for yourself?
5. Olight Rechargeable Battery Kit With Organizer
The OLIGHT 217C50 is a custom-designed battery that is specifically tailored to work with OLIGHT Seeker 2 (3000 lumens), Seeker 2 Pro (3200 lumens), and Warrior X Pro (2250 lumens) flashlights. This high-performance battery boasts a 5000mAH capacity and is designed to handle high-drain usage.
One of the standout features of the OLIGHT 217C50 is its built-in protection board, which provides added safety measures against over-discharge, overcharge, and short circuits. This ensures that the battery remains in optimal condition and reduces the risk of any safety hazards.
This rechargeable battery is a reliable and long-lasting power source for your OLIGHT flashlights, allowing you to enjoy extended use without worrying about running out of power. Its custom design ensures a perfect fit for the compatible flashlights, maximizing the battery's performance and lifespan.
6. Cwuu 3.7v 21700 Rechargeable Battery 5000mah For Flashlight, Doorbell And Toys (Purple, 2 Pack)
This compact and sleek product measures 70mm x 21mm x 21mm (2.75*0.82*0.82 inches), making it easy to carry around and use on-the-go. To ensure optimal performance, it is recommended to fully charge the battery before the first use. With its convenient size and reliable power source, this product is perfect for those who need a portable and efficient solution for their needs.
7. Nitecore E4k Cree Xp-L2 V6 Edc Flashlight, 21700, White, 4400 Lumens, Black, Fl-Nite-E4k
The MAX 4400 LUMEN OUTPUT flashlight is a powerful and versatile tool that is perfect for outdoor enthusiasts, professionals, and anyone in need of reliable illumination. Thanks to its 4 CREE XP-L2 V6 LEDs and a high capacity 21700 battery, it produces an impressive 4400 lumens of light output.
One of the standout features of this flashlight is its mode memory function, which automatically remembers the last mode used. This is a useful feature that saves time and effort, especially when using the flashlight in different settings.
In addition to its standard modes, the MAX 4400 LUMEN OUTPUT flashlight also includes special modes, such as SOS, beacon, and a dizzying strobe mode for self-defense. These modes can be activated easily using the large side switch, which can be operated with bare or gloved hands.
The flashlight also offers 5 brightness levels and 3 special modes, providing a wide range of lighting options to suit any situation. This makes it a versatile tool that can be used for everything from camping and hiking to search and rescue operations.
The MAX 4400 LUMEN OUTPUT flashlight comes with a range of accessories, including a 21700 rechargeable Li-ion battery, USB-C charging cable, CR123A battery magazine, two-way pocket clip, holster, lanyard, and spare o-ring. These accessories make it easy to use and carry the flashlight wherever you go.
8. Cpzz 21700 Battery 5000mah Rechargeable 3.7vlot For Led Flashlights,electronic Devices,(8pack,green)
The 3.7V 21700 Battery is a versatile power source that can be used in a wide range of electronic devices and flashlights. This battery boasts a compact size, measuring at 21mm in diameter, 71mm in length, and 0.82 inches in both width and height, making it a convenient and portable power solution for your devices.
With a capacity of 3.7 volts, this battery provides reliable and long-lasting power to keep your electronics running smoothly for extended periods of time. Whether you're using it in a flashlight for outdoor activities or in an electronic device for everyday use, this battery is sure to meet your power needs.
The 21700 Battery is designed with quality and durability in mind, ensuring that it will last for several uses. Its compact size and high capacity make it a great choice for those who need a dependable and efficient power source.
9. Nitecore P30 Hunting Flashlight Set
Introducing the latest addition to the Precise Series, the NITECORE NEW P30 – a high-performance hunting flashlight that runs on a 21700 battery, and is fully compatible with 18650, CR123 and RCR123 batteries. With a maximum runtime of 950 hours, the NITECORE NEW P30 ensures consistent usage for up to 40 days.
The NITECORE NEW P30 boasts a CREE XP-L HI V3 LED in an optical system that is combined with crystal coating and Precision Digital Optics Technology (PDOT). This results in an impressive long throw performance of 618 meters, making it ideal for searching and hunting in low-light conditions.
The dual button interface of the NITECORE NEW P30 is user-friendly and offers quick access to five different brightness levels and three special modes, making it suitable for various applications. In addition, multiple hunting accessories are available for purchase, including the newly upgraded GM02 40-40 gun mounts and NFR50/NFG50 filters for high power red/green beam.
Included with the NITECORE NEW P30 are several accessories, such as the Nitecore 21700 USB-C Rechargeable Li-ion Battery (NL2150R 5,000mAh), USB-C Charging Cable, Clip, Lanyard, Spare O-ring, Spare Tail Switch cover, 18650/CR123 Battery Magazine, Holster Plus Offset Mount & Alan Wrench.
10. Sofirn's Ultimate Light: 3800 Lumens Rechargeable Flashlight
The Sofirn IF25A rechargeable flashlight is a versatile and durable tool that can be used for various purposes, from outdoor adventures to everyday home use. This flashlight is equipped with 4 x 10W SST20 LED bulbs that produce a super bright light with a color temperature of 4000K and a high color rendering index of 95. The flashlight can throw light up to 420 meters, making it ideal for long-range illumination.
The IF25A flashlight is compact and lightweight, weighing only 3.49 oz / 99 grams and measuring 4.17 inches/ 10.6cm in length. It is made from Aircraft 6061 grade-aluminum alloy, which makes it highly durable and resistant to impact. Additionally, the flashlight is waterproof to IPX-8, making it suitable for use in all weather conditions.
This flashlight features an advanced UI called Anduril UI 2, which is the same as BLF SP36. It has multiple brightness settings that can meet most people's needs. The flashlight is easy to operate, with a simple click to turn on and press and hold to ramp up the brightness.
The Sofirn IF25A flashlight also incorporates advanced technology to ensure optimal performance. It has an intelligent temperature control system that prevents overheating by reducing the output, and a low voltage protection feature that steps down the light to a lower level when the battery is lower than 2.8V.
When you purchase the Sofirn IF25A flashlight, you get a complete package that includes a rechargeable battery, a USBC cable, and responsive and helpful customer service. If you encounter any issues with the product, you can contact the customer service team for a refund or replacement.
Best 21700 Battery For Flashlight FAQs
Are there any 21700 batteries specifically designed for use in tactical flashlights?
Yes, there are 21700 batteries specifically designed for use in tactical flashlights. These batteries are often referred to as "high drain" batteries, which means they can deliver a lot of power quickly. This is important in tactical flashlights, which often require a burst of high intensity light for a short period of time.
One example of a 21700 battery designed for use in tactical flashlights is the Acebeam ARC21700H-510A. This battery has a capacity of 5100mAh and a maximum discharge current of 15A, which makes it ideal for high-performance flashlights.
Another example is the Olight ORB-217C50 battery, which has a capacity of 5000mAh and a maximum discharge current of 10A. This battery is designed to work with Olight's M2R Pro Warrior and Warrior X Pro flashlights.
It's important to note that not all 21700 batteries are suitable for use in tactical flashlights. Look for batteries that are specifically designed for high-drain applications and have a high discharge current rating. Always follow the manufacturer's recommendations for battery usage and safety.
Are there any 21700 batteries with built-in protection circuits for flashlight use?
Yes, there are several 21700 batteries available in the market that come with built-in protection circuits specifically designed for flashlight use. These protection circuits are essential in preventing the battery from overcharging, over-discharging, and short-circuiting, which can be dangerous and damage both the battery and the flashlight.
One popular option is the Acebeam ARC21700H-500A-PRO, which is a high-drain 3.7V 5000mAh rechargeable battery with a built-in protection circuit and a maximum continuous discharge current of 15A, making it an excellent choice for high-performance flashlights. Another option is the Nitecore NL2150R, which is a 5000mAh 21700 battery with a built-in micro-USB charging port and protection circuit that can be recharged up to 500 times.
It's important to note that not all 21700 batteries come with built-in protection circuits, so it's crucial to do your research and choose a reputable brand that offers reliable and safe batteries for your flashlight. Additionally, always follow the manufacturer's instructions for charging and using the battery to avoid any potential hazards.
Can I use a 21700 battery from a reputable brand in any flashlight model, or are there compatibility issues?
Generally, a 21700 battery from a reputable brand should be compatible with most flashlight models that are designed to use 18650 or 26650 batteries. However, it is always important to check the specifications of your flashlight and the battery to ensure compatibility and optimal performance.
Some factors to consider when using a 21700 battery in your flashlight include the voltage and current requirements of your flashlight, as well as the protection features of the battery. It is important to ensure that the battery can provide the necessary voltage and current to power your flashlight effectively without damaging the battery or the flashlight. Additionally, some 21700 batteries may have built-in protection features such as overcharge and overdischarge protection, which can help prevent damage to the battery and ensure safe operation.
In summary, while a reputable 21700 battery should be compatible with most flashlight models, it is important to check the specifications and ensure that the battery can provide the necessary power and protection features for optimal performance and safety.
Can I use a 21700 battery with a higher capacity than recommended in my flashlight?
While it may be tempting to use a higher capacity 21700 battery in your flashlight, it is not recommended. The manufacturer of your flashlight has likely designed it to work with a specific battery capacity and using a battery with a higher capacity could potentially damage the flashlight or even cause a safety hazard.
Additionally, using a battery with a higher capacity than recommended may not necessarily result in longer run times for your flashlight. The flashlight's circuitry and components are designed to work with a specific battery capacity, and using a higher capacity battery may not necessarily result in more efficient or effective performance.
It is always recommended to use the battery specified by the manufacturer for your flashlight to ensure optimal performance and safety. If you are unsure about which battery to use, consult the owner's manual or contact the manufacturer for guidance.
Is it safe to use a 21700 battery with a higher discharge rate than recommended in my flashlight?
It is not recommended to use a 21700 battery with a higher discharge rate than what is recommended for your flashlight. This is because using a battery with a higher discharge rate than recommended can cause the flashlight to overheat, which can lead to damage to the flashlight or even injury to the user.
Furthermore, using a battery with a higher discharge rate can also cause the battery to wear out more quickly, which can lead to decreased performance over time. It is always important to use the battery that is rated for your device and to follow the manufacturer's instructions for proper use and care.
If you are unsure about the appropriate battery to use with your flashlight, it is best to consult the manufacturer or a knowledgeable expert to ensure that you are using the correct battery for your device and to avoid any potential safety hazards.
What 21700 battery offers the best balance of capacity and discharge rate for flashlights?
The 21700 battery is becoming increasingly popular in the flashlight community due to its high capacity and discharge rate. There are several options available on the market, each with its own strengths and weaknesses. However, one battery that stands out for its balance of capacity and discharge rate is the Samsung INR21700-50E.
This battery has a capacity of 5000mAh, which is among the highest available for 21700 batteries. It also has a continuous discharge rate of 9.8A and a maximum discharge rate of 20A. This makes it suitable for use in high-performance flashlights that require a lot of power.
Additionally, the Samsung INR21700-50E is a reliable and safe battery. It has built-in protection against overcharging, over-discharging, and short-circuiting. It also has a long lifespan, with the ability to withstand up to 500 charge cycles.
Overall, the Samsung INR21700-50E offers a great balance of capacity and discharge rate for flashlight enthusiasts who want a high-performance battery that is also safe and reliable.
What is the average lifespan of a 21700 battery used in a flashlight?
The average lifespan of a 21700 battery used in a flashlight depends on various factors such as the quality of the battery, the frequency of use, and the charging habits. However, on average, a 21700 battery can last anywhere from 500 to 1000 charge cycles before it needs to be replaced. This translates to around 2-3 years of regular use, assuming the battery is charged and discharged once per day.
It's important to note that battery lifespan can be affected by several factors, such as temperature, discharge rate, and storage conditions. To ensure that your 21700 battery lasts as long as possible, it's recommended to store it in a cool, dry place and avoid exposing it to extreme temperatures or humidity. Additionally, it's advisable to avoid overcharging or discharging the battery, as this can also shorten its lifespan.
In summary, the lifespan of a 21700 battery used in a flashlight can vary depending on several factors, but with proper care and maintenance, it can last for several years.
What is the best 21700 battery for high-powered flashlights?
When it comes to high-powered flashlights, the battery you choose can make all the difference in terms of performance and longevity. The 21700 battery has gained popularity in recent years for its high capacity and ability to handle high discharge rates. When selecting the best 21700 battery for high-powered flashlights, there are a few key factors to consider.
First and foremost, look for a battery with a high capacity, ideally 4000mAh or higher. This will ensure longer run times and more consistent performance. Additionally, choose a battery with a high discharge rate, as this will allow the flashlight to maintain its brightness even under heavy use. A discharge rate of 15A or higher is recommended.
Some top choices for 21700 batteries for high-powered flashlights include the Samsung 40T, Sony VTC6A, and Molicel P42A. These batteries have all been tested and proven to deliver high performance and reliability. It's important to note that not all 21700 batteries are created equal, so be sure to do your research and choose a reputable brand.
What is the recommended charging method for 21700 batteries used in flashlights?
The recommended charging method for 21700 batteries used in flashlights is to use a smart charger specifically designed for rechargeable lithium-ion batteries. These chargers are designed to monitor the battery's voltage and adjust the charging rate accordingly, ensuring a safe and efficient charging process.
It is important to avoid overcharging the battery, as this can lead to overheating and potential damage. It is also recommended to use a charger that features overcharge protection, which will automatically stop charging the battery once it reaches its maximum capacity.
Additionally, it is important to use a charger that matches the specific type of 21700 battery being used, as different batteries may require different charging rates and voltages. It is always best to refer to the manufacturer's instructions for specific charging recommendations and precautions.
Overall, using a high-quality, smart charger and following the manufacturer's instructions for your specific 21700 battery is crucial for ensuring safe and efficient charging and maximizing the lifespan of your battery.
Which 21700 battery has the longest runtime for flashlights?
The 21700 battery is a popular choice for flashlights due to its increased capacity and runtime compared to other battery types. When it comes to finding the 21700 battery with the longest runtime for flashlights, there are several options to consider.
One of the top contenders is the Samsung 50E 21700 battery, which has a capacity of 5000mAh and a maximum continuous discharge rate of 9.8A. This battery is known for its long runtime and reliability.
Another option is the Molicel P42A 21700 battery, which has a capacity of 4200mAh and a maximum continuous discharge rate of 35A. Although it has a slightly lower capacity than the Samsung 50E, its high discharge rate makes it suitable for high-powered flashlights that require a lot of energy.
Ultimately, the battery with the longest runtime for flashlights will depend on the specific needs and preferences of the user. It's important to choose a reputable brand and ensure that the battery is compatible with the flashlight being used.
