18650 Battery for Flashlights: The Best of All, in 2021!

      by Phil Borges // in Flashlight, Reviews

Ever find yourself in a dark place with your flashlight dying and no way to charge it?

What if you could never be stuck without light again, but the battery kept giving out on you when you needed it most?

If so, then look no more! We've got it all covered!

In this article, we're going to discuss some of the best batteries, including 18650 batteries for flashlights that will keep powering up even long after they've been drained.

With these top-rated options from trusted brands like Samsung or Panasonic, there's really NO excuse not to have reliable lighting at all times!

We hope this guide helps make buying decisions easier. Just remember, always read reviews before committing!

18650 Battery for Flashlights: Why is it a better choice?

Ever noticed how a flashlight can light up an entire room? That's because most flashlights use batteries. The type of battery is crucial to the brightness, safety, and lifespan of your device.

A 18650 lithium-ion cell has become a popular choice and a high-tech way to power your LED flashlights. With an impressive capacity of charging and long-lasting energy efficiency, these 18650's will make sure you're never in the dark again!

There are many reasons why 18650 is the battery of choice for flashlights. Here's a list of some of them:

Cheaper: When you buy your first dependable and efficient flashlight, it may seem like an expense that would be best to avoid as much as possible. However, when you consider how often the light will be used, the long-term investment pays off in the end.

The 18650 battery is cheaper to buy initially, but you'll save lots of money over time as you won't have to be constantly replacing batteries. In fact, when you do invest in your first set of 18650 batteries for a flashlight, you may find that they last longer than the flashlight itself!

Longer Life: Do you get tired of running out of power in your soon-to-die batteries when you're in the darkest, deepest cave? This is a constant problem for many people. Why not avoid it by getting a battery that will actually last. By investing in a 18650 battery for flashlights, you can have a better chance of having your light when you need it most.

Truly Portable: The 18650 battery is the ideal power source for flashlights because it is portable and can be taken with you anywhere you go. You'll never have to worry about dead batteries again when taking a hike with your family or even exploring caves in complete darkness.

The Fantastic 18650 Batteries For Flashlights - Overview

Here are some great options to compare and contrast before deciding which battery suits your needs! 

1. UltraFire 18650 Flashlight with 4PCS UFB22 3.7v 18650 2200mAh Rechargeable Battery and Charger

Are you looking for a high-powered flashlight that is also compact enough to fit in your pocket?

UltraFire's WF-501B Single Mode Flashlight has got it all. This great value set includes 18650 batteries and a compatible charger with 4x 2200mAh 3.7v rechargeable battery packs. It's perfect for extended use!

Get your hands on this UltraFire WF-501B Single Mode Flashlight, which has 500 Lumens for lighting up the dark! The flashlight emits light in one mode and is so simple to operate that you can use it as a hand or headlamp.

It features an XPE G3 LED bulb with 100,000 hours lifetime guarantee that is perfect for all those worry-free days at home or outside.

The Ultrafire Rechargeable 18650 Flashlight Kit is the perfect compact all-in-one kit for those looking to venture out into the great outdoors. The flashlight boasts a total charging time of 5 to 7 hours, giving it an impressive 6 hour run time. It also comes with one caveat, and that is you need access to a wall socket (not just your USB port) for full functionality.

With that said, if you're willing and able, then head on over and grab up this bargain today before they sell out again.


  • lasts a long time
  • high-quality
  • durable


  • it has the potential to overheat while in use

2. Tokeyla 18650 Flashlight Set: Four Rechargeable Batteries and a Charger

Power outages happen all the time in this world, and they can be a hassle. But with Tokeyla's 18650 flashlight set, you will never have to worry about not having light! These rechargeable batteries are perfect for your household or emergency kit. 

The durable military-grade aluminum housing is resistant to water and shock. It can be used in any climate, rain or snow, without fear of damage.

The flashlight design allows you to switch and customize your light from a low, middle, or high-intensity setting.

The zoom function comes in handy when looking for something specific, like finding change on an airplane floor.

The durable and practical design makes it perfect for the outdoors. It can be used while camping, fishing, hunting, or walking your dog to keep you cool in hot weather.

The Tokeyla Set is an efficient, high-quality flashlight and comes with 4 18650 rechargeable batteries. This package includes a USB charger for the lithium-ion battery pack that can be used.

With 1000 lumens of power at its disposal, you'll never have trouble seeing what's ahead when walking home late on these nights as well.

Its size conveniently fits inside any bag so that there is no excuse to bring it with you on every adventure!


  • it lasts for up to 7 hours
  • rechargeable through a USB connection
  • has an on/off switch

Disadvantages: would be the type of battery because they can only charge via USB, which may not work in remote areas where you don't have access to electricity or water-proofing since it isn't submersible.

3. Super Bright BXE LED Flashlight: 8x Rechargeable Batteries and Charger Included

This flashlight is the perfect combination of convenience and safety. This lightweight, durable flashlight is just what you need to ward off those pesky intruders!

The super-bright 2000 lumen (max) LED Flashlight will illuminate your whole room or backyard without any issue. This powerful device also has an adjustable focus with 5 modes: High, Medium, Low, and Strobe for an even more versatile experience.

It's no wonder this light provides up to 6 hours of non-diminishing brightness from the included premium rechargeable battery. It can last all night long through thick and thin!

Tough and durable, this flashlight is made for use in heavy rain. IP65-rated water resistance withstands rough handling while the aluminum body prevents scratches from daily wear and tear.

The high Capacity performance lasts up to 3~6 hours with a single charge on its high-quality battery that's protected against heat or overcharging so you can enjoy safe charging!

If you're looking for a reliable, long-lasting light source without having to buy expensive batteries or cords, then this set is worth considering. With 6 hours of battery life on medium beam mode and an included charger that can charge your batteries in 3-4 hours. You'll have power when it's most needed.


  • bright, reliable, and durable.
  • can provide you with power for up to 6 hours when fully charged.
  • the batteries charge quickly from zero to 100% without any problems or worries about how long they will last. 


  • the charger can only charge two batteries at a time, which means you'll need to wait for one battery to be finished before charging the next.

It's not suitable for underwater usage since water could get into your device and cause damage.

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

Including this flashlight set from WolfonFire is the perfect addition to your camping gear. It is powerful, bright, and with a battery life lasting up to 6 hours on a high beam. It's everything you need in an LED Flashlight.

The flashlight has 5 modes: High, Medium, Low, Strobe, and SOS. Max output reaches 2000 lumens with a lifetime of 100,000 hours. With that in mind, you'll never need to worry about having enough light again. The aluminum-alloy body is waterproof and resilient to all the elements while preventing scratches due to daily wear and tear. 

This flashlight has been designed for a variety of outdoor activities. From search missions and patrolling to exploring caves, this torch can be found in the pocket or on your head during any trip.

Whether you need high lumens as an emergency light or want rechargeable lighting with batteries included, there is something here that will suit all needs.

This flashlight is powered by 8 Pcs 3.7V 18650 Li-on Rechargeable Battery or 3aaa Batteries, and a 1 p Battery Charger is included with purchase.


  • are its luminous brightness, compact design, and ease of use.
  • the light shines in five different modes: high beam, low beam, strobe flash mode for emergencies when you need to signal your location or get attention from others quickly; SOS flashing emergency beacon that provides help during an emergency.


  • this product has a lot to offer, but it does have its drawbacks. For instance, the charger can only charge 2 batteries at a time which forces you to stop charging when one runs out and recharge before continuing with another battery.
  • It also lacks any features for extending battery life as some competitors have, and it doesn't handle bulk charging either.

5. SEIVI 18650 Battery Charger plus USB Interface for 18650 Battery for Flashlights  (8pack)

The SEIVI Battery Charger can charge a wide range of rechargeable batteries, including 18650 and others such as Ni-MH/Ni-CD, 3.6V/3.7V Li-ion/IMR/.INR/, ICRs AAA's etc. At the same time, it has 4 charging slots available for different types of battery chargers (2x18650).

With the SEIVI battery charger, you'll know exactly when each battery is done charging. The built-in circuit protection prevents any possible electrical problems that may arise while your batteries are recharging. 

The High-Definition LCD screen displays that show charging status in real-time.

The SEIVI portable battery charger is fully equipped with a USB interface, giving you the freedom to charge it wherever and however. Not only does this work as an external power bank for your digital devices on the go, but it also can be used in conjunction with any other compatible wall chargers around town.

This battery charger has a 2-year Limited Product Warranty, guaranteeing replacement if there are any manufacturing defects. Your purchase will be hassle-free!


  • with high-definition LCDs
  • secure protection from temperature


  • many people opting for cheaper alternatives

Final Verdict

If you're looking for a new flashlight, it's important to know what type of battery is required. One great option is the 18650 Lithium-Ion Battery because they are lightweight and rechargeable.

Overall, The UltraFire Flashlight Set with 4x3.7v 18650 Rechargeable Batteries is the best and affordable.

This flashlight is a must-have essential for your next outdoor activity. They're easy to charge, lightweight and durable for hiking, camping, and other outdoor activities.

It would be helpful to have this article on hand while making a purchase decision so you can choose the best battery for you.

About the Author

Hi, I'm Phil Borges.. thanks for reading.. My wife says I can't shut up about batteries so to save my marriage I've started this blog .. where I'd be ranting about batteries! Please leave a comment if you have any questions, I'm happy to help!