The Best 18650 Battery For Flashlights in 2021

The Best 18650 Battery For Flashlights in 2021

Table of Contents

    Tired of your flashlight burning out when you need it most? Looking for the best 18650 battery for flashlights?  Then read along with us as we take a closer look at some of the most top-rated 18650 batteries compatible with most LED flashlights on the market. 

    A 18650 battery is an 18mm x 65mm rechargeable lithium-ion cell, which has become a go-to choice when it comes to powering LED flashlights. A 18650 lithium-ion battery typically puts out around 3.7 volts with a capacity ranging from 1800 mAh up to 3500 mAh. 

    Compared to regular rechargeable AA batteries, 18650 batteries have a higher capacity when it comes to charging. In other words — these high performance 18650 batteries will keep your LED flashlight working longer.

    In a hurry? Here’s the test winner after 10 hours of research:

    UltraFire 18650 Flashlight with 4PCS UFB22 3.7v 18650 2200mAh Rechargeable Battery and Charger, Single Mode Mini Flashlights 500 Lumens
    • WHAT YOU GET: UltraFire WF-501B Single Mode Flashlight, 4PCS UFB22 Real 2200mAh 3.7v Rechargeable Battery, 1PCS Batteries Charger, Gift Box. (Please Note: remove the clear plastic film wrapped on the...

    The Best 18650 Batteries For Flashlights - Overview

    Here's an overview of the 5 best high power 18650 batteries for flashlights (keep scrolling for more details including the pros and cons of each battery:

    Preview
    UltraFire 18650 Flashlight with 4PCS UFB22 3.7v 18650 2200mAh Rechargeable Battery and Charger, Single Mode Mini Flashlights 500 Lumens
    Tokeyla Full Metal 5 Modes Tactical Flashlight with 4-Pack 18650 Rechargeable Batteries and USB Charger Super Bright high Lumen Handheld Flashlight
    Strong Light Flashlight 2000 Lumens Tactical Flashlight T6 Lamp Beads Adjustable Focus 5 Modes with 6PCS 18650 3.7V Rechargeable Battery and Charger
    High 2000 Lumen 18650 Flashlight with 8Pcs 3.7V High Capacity Rechargeable Battery and Charger, Ultra Bright Adjustable Focus Handheld Light and 5 Modes for Camping, Hiking, Outdoor, Emergency
    18650 Battery Charger, SEIVI LCD Display Universal Smart Charger for Rechargeable Batteries Li-ion Batteries 18650 26650 18490 17670 17500 16340 14500, Ni-MH/Ni-Cd A AA AAA Batteries
    Product
    UltraFire Flashlight Set with 4x 3.7v 18650 Rechargeable Batteries
    Tokeyla Flashlight Set With 4x 18650 Rechargeable Batteries and USB Charger
    BXE Flashlight Set With 8x 18650 Rechargeable Batteries and Charger
    WolfonFire Flashlight Set With 8x 18650 Rechargeable Batteries and Charger
    18650 Battery Charger with USB Interface
    Best For
    Best Overall
    Battery Charging
    Durability
    Brightness
    Budget Option
    Rating
    ⭐⭐⭐⭐⭐
    ⭐⭐⭐⭐⭐
    ⭐⭐⭐⭐½
    ⭐⭐⭐⭐⭐
    ⭐⭐⭐⭐½
    mAh
    2200mAh
    5,800mAh
    9900mAh
    5000mAh
    N/A
    Volt
    3.7v
    3.7v
    3.7v
    3.7v
    N/A
    Battery Life
    5-7 Hours
    7 Hours
    6 Hours
    4-5 Hours
    Depends On Battery Type
    Charger Included
    Preview
    UltraFire 18650 Flashlight with 4PCS UFB22 3.7v 18650 2200mAh Rechargeable Battery and Charger, Single Mode Mini Flashlights 500 Lumens
    Product
    UltraFire Flashlight Set with 4x 3.7v 18650 Rechargeable Batteries
    Best For
    Best Overall
    Rating
    ⭐⭐⭐⭐⭐
    mAh
    2200mAh
    Volt
    3.7v
    Battery Life
    5-7 Hours
    Charger Included
    Preview
    Tokeyla Full Metal 5 Modes Tactical Flashlight with 4-Pack 18650 Rechargeable Batteries and USB Charger Super Bright high Lumen Handheld Flashlight
    Product
    Tokeyla Flashlight Set With 4x 18650 Rechargeable Batteries and USB Charger
    Best For
    Battery Charging
    Rating
    ⭐⭐⭐⭐⭐
    mAh
    5,800mAh
    Volt
    3.7v
    Battery Life
    7 Hours
    Charger Included
    Preview
    Strong Light Flashlight 2000 Lumens Tactical Flashlight T6 Lamp Beads Adjustable Focus 5 Modes with 6PCS 18650 3.7V Rechargeable Battery and Charger
    Product
    BXE Flashlight Set With 8x 18650 Rechargeable Batteries and Charger
    Best For
    Durability
    Rating
    ⭐⭐⭐⭐½
    mAh
    9900mAh
    Volt
    3.7v
    Battery Life
    6 Hours
    Charger Included
    Preview
    High 2000 Lumen 18650 Flashlight with 8Pcs 3.7V High Capacity Rechargeable Battery and Charger, Ultra Bright Adjustable Focus Handheld Light and 5 Modes for Camping, Hiking, Outdoor, Emergency
    Product
    WolfonFire Flashlight Set With 8x 18650 Rechargeable Batteries and Charger
    Best For
    Brightness
    Rating
    ⭐⭐⭐⭐⭐
    mAh
    5000mAh
    Volt
    3.7v
    Battery Life
    4-5 Hours
    Charger Included
    Preview
    18650 Battery Charger, SEIVI LCD Display Universal Smart Charger for Rechargeable Batteries Li-ion Batteries 18650 26650 18490 17670 17500 16340 14500, Ni-MH/Ni-Cd A AA AAA Batteries
    Product
    18650 Battery Charger with USB Interface
    Best For
    Budget Option
    Rating
    ⭐⭐⭐⭐½
    mAh
    N/A
    Volt
    N/A
    Battery Life
    Depends On Battery Type
    Charger Included

    1. UltraFire Flashlight Set with 4x 3.7v 18650 Rechargeable Batteries and Charger

    UltraFire 18650 Flashlight with 4PCS UFB22 3.7v 18650 2200mAh Rechargeable Battery and Charger, Single Mode Mini Flashlights 500 Lumens
    • WHAT YOU GET: UltraFire WF-501B Single Mode Flashlight, 4PCS UFB22 Real 2200mAh 3.7v Rechargeable Battery, 1PCS Batteries Charger, Gift Box. (Please Note: remove the clear plastic film wrapped on the...

    If you're looking for an all-in-one kit that contains 18650 batteries, a flashlight, and a charger for extended battery life, then consider this great-value set by UltraFire. 

    This bestseller includes UltraFire's WF-501B Single Mode Flashlight, 4x 2200mAh 3.7v Rechargeable Batteries, and a compatible recharging platform.

    The included UltraFire flashlight is easy to use and features a single-mode operation. No need to cycle through functions; simply turn it on, and voila — you've illuminated your surroundings. 

    Although 500-lumen is not the most powerful beam, it's still great for practical purposes, like camping, reading at night, or working in the garage. This flashlight measures 5.2 x 1.18 x 1 inches, which makes it a practical choice for backpacking and hiking. Personally, I like to wear a headlamp when camping, but this makes for a great backup.

    This kit includes 3.7V 2200mAh Li-on, low-drain 18650 batteries. Compared to standard high drain batteries, a single charge will last you for hours of use. When it's time to top up, simply use the included charger. 

    The total charging time is approximately 5 to 7 hours, which results in a run time of roughly 6 hours. As the charger needs to be plugged into a wall socket (not a USB port), If you're taking this flashlight into the outdoors, make sure you have an extra set of fully charged batteries. 

    So, If you're looking for an all-in-one set that includes rechargeable 18650 batteries, a compatible charging dock, and a basic yet functional flashlight, this kit by Ultrafire is a great bang for your buck.

    Read more buyer reviews at Amazon.com.

    PROS

    • Long lasting
    • High quality
    • Durable

    CONS

    • Potential to overheat

    2. Tokeyla Flashlight Set With 4x 18650 Rechargeable Batteries and USB Charger

    This set from Tokeyla features a single 1200 lumen high-quality flashlight, 4x 5800 mAh batteries, and a 4-slot USB Universal charger, suitable for charging a range of batteries.

    The flashlight itself is made from durable, military-grade aluminum and produces a fantastic beam of light under any weather conditions. Thanks to its soft-touch tail cap switch, located at the base of the flashlight, you can cycle between 5 different modes, including High, Middle, Low, Flash, and Strobe.

    This set includes 5800 mAh, 3.7V rechargeable lithium-ion batteries. Once fully charged, which takes roughly 3 to 4 hours, 2 single batteries can power the flashlight for over 7 hours.

    This kit includes a smart USB charger that can fit and recharge a range of lithium batteries — from 18650 to 14500 and anything in between. The charger is further equipped with a light indicator, which flashes red when the batteries are charging, and green once the batteries are fully charged and ready to use.

    Overall, this is the perfect, affordable solution for anyone looking for a complete and reliable flashlight set.

    Read more buyer reviews at Amazon.com.

    PROS

    • Over 7 hours of power supply for your flashlight
    • Relatively quick battery charging speed
    • High-grade and durable flashlight

    CONS

    • Batteries can only be charged via USB
    • Not suitable for under-water use

    3. BXE Flashlight Set With 8x 18650 Rechargeable Batteries and Charger

    Strong Light Flashlight 2000 Lumens Tactical Flashlight T6 Lamp Beads Adjustable Focus 5 Modes with 6PCS 18650 3.7V Rechargeable Battery and Charger
    • SUPER-BRIGHT: 2000 lumen (max) LED Flashlight,Ultra wide beam effortlessly illuminates a whole room or backyard.Adjustable focus with 5 modes: High, Medium, Low, Strobe, and SOS/Emergency protect your...

    If you are looking for a bright flashlight with powerful batteries and a reliable charger, then this flashlight set brought to you by California-based BXE may be just what you're looking for. 

    Made from military-grade aluminum alloy, this 3000 luminance flashlight is a great companion for hunting, fishing, and exploring. Its IP-X6-rated waterproof protection ensures that this flashlight won't let you down, even in the most extreme weather conditions on the planet. 

    Its adjustable focus allows you to expand and shrink the size of the light beam depending on your surroundings. Alternatively, you can switch between 5 different modes, including high, medium, low, strobe, and SOS.

    This set features 6x 18650 3.7V rechargeable batteries, which last for roughly 6 hours on a full charge (on medium beam mode). With the whole set of 6 batteries fully charged, you'll have a reliable source of light for over 12 hours!

    The included charger can charge a set of batteries within 3 to 4 hours and protects them from overcharging thanks to built-in automatic current control that also protects against short-circuiting, and electronic shock.

    Read more buyer reviews at Amazon.com.

    PROS

    • A bright, durable, and reliable flashlight
    • 2x batteries can provide enough power for up to 6 hours
    • Batteries charge from zero to 100% fairly quickly

    CONS

    • The charger can only charge two batteries at a time
    • Not suitable for under-water usage

    4. WolfonFire Flashlight Set With 8x 18650 Rechargeable Batteries and Charger

    Sale
    High 2000 Lumen 18650 Flashlight with 8Pcs 3.7V High Capacity Rechargeable Battery and Charger, Ultra Bright Adjustable Focus Handheld Light and 5 Modes for Camping, Hiking, Outdoor, Emergency
    • Ultra Bright:Intense spotlight for long range observation can up to 600 feet, Circle Floodlight for large area illumination.2000-lumen (max) powerful led.

    If you are on the lookout for a compact, reliable, and bright flashlight set, then this flashlight kit from WolfonFire is another great choice. This flashlight set is perfect for hunting, fishing, camping, hiking, or simply exploring your surroundings during the darkest hours of the night.

    The flashlight itself is made from high-quality material and is extremely durable making it suitable for search missions, routine patrolling, cave exploring, and other activities.

    This flashlight is compact, measuring 9.06 inches in length, 4.65 inches in width, and just 1.69 inches in thickness — it can easily fit into your pocket. In addition, it features five light modes, including high, middle, low, strobe, and SOS.

    This flashlight kit includes 8PCS of 3.7V 5000mAh rechargeable batteries. In terms of battery life, on a single charge, 2 batteries will provide light to your flashlight for roughly 4-5 hours.

    Unfortunately, the charger port can only charge 2 batteries at a time; this may not be ideal if you need all 8 batteries charged as soon as possible. Charging 2 batteries takes roughly 3-4 hours.

    Read more buyer reviews at Amazon.com.

    PROS

    • Super bright and durable flashlight
    • Compact and easy-to-carry design
    • 5 different flash-modes

    CONS

    • The charger can only charge 2 batteries at a time
    • Batteries don’t last as long as some of the competition

    5. 18650 Battery Charger with USB Interface

    18650 Battery Charger, SEIVI LCD Display Universal Smart Charger for Rechargeable Batteries Li-ion Batteries 18650 26650 18490 17670 17500 16340 14500, Ni-MH/Ni-Cd A AA AAA Batteries
    • 【Compatibility】It applies to rechargeable battery as 32650, 26650, 26500, 25500, 22650, 22500, 21700, 20700, 18700, 18650, 18500, 18490, 18350, 17670, 17650, 17500, 17350, 16650, 16340(123A),...

    Looking for an affordable charger to recharge any of the 18650 batteries listed in this overview? Then this budget-friendly USB charger by SEIVI offers superb value-for-money. 

    This charging dock is compatible with a wide range of rechargeable batteries, including 18650 and others such as Ni-MH/Ni-CD, 3.6V/ 3.7V Li-ion/IMR/INR/ICR, AAA, and more. 

    The SEIVI Battery Charger features 4 charging slots that can be used to charge different types of batteries at the same time (for example 2x 18650 and 2x AAA). 

    This charger comes with a high-definition LCD screen that displays the real-time charging status of each individual battery. 

    The SEIVI battery charger comes with built-in circuit protection that prevents short-circuiting, overcharging, over-discharging, and other possible electrical problems. 

    Furthermore, the SEIVI charger includes a USB interfaceAlternatively, you can simply connect it to a USB-compatible wall charger using the USB-cable cable (included).

    This battery charger is covered by a 2-year Limited Product Warranty, guaranteeing a replacement in case of manufacturing defects. This allows you to buy with confidence!

    Read more buyer reviews at Amazon.com.

    PROS

    • Temperature protection
    • High definition LCD displays

    CONS

    • Cheaper than other options

    Final Verdict

    Finding the best 18650 batteries isn't merely about performance and value, you also need to consider the technical requirements of the flashlight you own or are planning to buy. 

    If you want top-quality from a trusted brand, highly-rated options such as the ORBTRONIC model will be your best bet. 

    If you're more budget-conscious and are interested in a best-value option, then consider the Victagen set (which includes multiple batteries and a charger). 

    Some brands require a universal charger or a battery pack. Others, such as Klarus, offer a clever alternative: charging via a micro-USB cable — no separate charging accessories required.

    No matter which option you choose, every product on our list combines value-for-money with high performance.

    Our Winner

    Preview
    UltraFire 18650 Flashlight with 4PCS UFB22 3.7v 18650 2200mAh Rechargeable Battery and Charger, Single Mode Mini Flashlights 500 Lumens
    Product
    UltraFire Flashlight Set with 4x 3.7v 18650 Rechargeable Batteries and Charger
    Rating
    ⭐⭐⭐⭐⭐
    mAh
    2200mAh
    Volt
    3.7v
    Battery Life
    5-7 Hours
    Charger Included
    Preview
    UltraFire 18650 Flashlight with 4PCS UFB22 3.7v 18650 2200mAh Rechargeable Battery and Charger, Single Mode Mini Flashlights 500 Lumens
    Product
    UltraFire Flashlight Set with 4x 3.7v 18650 Rechargeable Batteries and Charger
    Rating
    ⭐⭐⭐⭐⭐
    mAh
    2200mAh
    Volt
    3.7v
    Battery Life
    5-7 Hours
    Charger Included

    The UltraFire Flashlight Set with 4x3.7v 18650 Rechargeable Batteries and Charger is our overall winner.

    In terms of value combined with battery life, charging speed, safety features, versatility, and the overall kit itself, The UltraFire Flashlight Set with 4x3.7v 18650 Rechargeable Batteries and Charger could not be beaten.

    So, be sure to check the specs of your device, match it to one of the rechargeable battery kits in our overview, and you'll be ready to illuminate your outdoor adventures!

    I grew up in Montana, spent my free time camping, hunting and fishing. I began writing as a side hobby while camping. Very happy to be working with the guys here at Outdoor Command and look forward to providing best in class outdoors content for you.

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