Flashlight battery: Flashlight Batteries | Dorcy Batteries

Best batteries for flashlights | Best AA, 21700, and 18650 battery for your flashlight

Table of contents

  • Best AA and AAA batteries for flashlights
  • Best 18650 batteries for flashlights
  • Best 21700 batteries for flashlights
  • Places to buy them

Do you also get annoyed by all the crappy batteries you find online?

It’s important to get the info from the right people. We’ve been into flashlights for over 9 years and although we don’t know everything, we still know more than 99% of the rest of the world about batteries….

We will help you decide what batteries are the best for your flashlight. Be it AAA, AA, or lithium-ion batteries. We also help you get to know which batteries to stay away from. 

Rechargeable flashlight batteries:

Best AA & AAA flashlight batteries (rechargeable)

Many keychain lights like the famous Olight i3t and Lumintop EDC02 run off AAA batteries. So knowing which batteries to choose from is not only useful, it can be a gamechanger.

The first thing we would like to point out is that we NEVER recommend using Alkaline AAA batteries! Just don’t! Just google for “batteries stuck in Maglite” and Google shows 141,000 results. Be warned! The list below will be in alphabetical order.

Eneloop Rechargeable batteries

The Eneloop battery has taken over the NiMH battery world since November 2005! Although there are still people who have never heard of the brand, it has always been at the top of best performers! Always. Also, check out Eneloop101.com if you want to know more about Eneloop batteries in general.

Look for Panasonic Eneloop batteries at your local store, or online, and get them while you can. Please keep in mind that even though the Eneloop PRO has a higher capacity, the regular white Eneloops are less prone to damage and capacity loss over time.

Eneloop AA (standard)

Buy 4AA at Amazon. com

Buy 8AA at Amazon.com

Buy 16AA at Amazon.com

Buy 24AA at Amazon.com

Eneloop AAA

Buy 4AAA at Amazon.com

Buy 12AAA at Amazon.com

Buy 24AAA at Amazon.com

Best 18650 battery for flashlights

We often categorize 18650 batteries into 2 camps: high capacity and high drain.

With High Drain cells we mean to say that the batteries can provide more current than a typical battery. High-power flashlights that produce a few thousand lumens need these kinds of batteries. However, most of the time, high-drain batteries have lower capacity than normal 18650 batteries.

If you want your flashlights to run as long as possible, at sub-1000 lumens, then high capacity might be the best choice.

Keep in mind that Max Amps don’t always mean the same for all manufacturers. In some specifications that means the highest peak discharge rate, but for other brands they mean: max continuous discharge current.

Also, before going any further, I’d like you to have a look at our list of some of the best 18650 battery chargers as well.

Some of the more popular HIGH DRAIN / HIGH DISCHARGE 18650 batteries are:

Sony Murata VTC6
  • Max. continuous discharge: 30A
  • Capacity: 3000mAh
  • Link to review
Molicell P26A
  • Max. continuous discharge: 35A
  • Capacity: 2600mAh
  • Link to review
Samsung INR18650 25R
  • Max. continuous discharge: 20A
  • Capacity: 2500mAh
  • Link to review

Some of the most popular HIGH CAPACITY 18650 batteries:

If you want to get the longest runtimes possible, you need to look at high-capacity batteries, with a capacity of 3000mAh or more. These usually don’t have a high discharge rate, so they don’t make a good fit with the brightest flashlights.

To sum it up: get these for flashlights with 2000 lumens or less.

Samsung INR18650 35E
  • Max. continuous discharge: 13A
  • Capacity: 3500mAh
  • Link to review
Panasonic NCR18650B
  • Max. continuous discharge: 4.8A
  • Capacity: 3400mAh
  • Link to review
Sanyo NCR18650GA
  • Max. continuous discharge: 10A
  • Capacity: 3500mAh
  • Link to review

Hybrid: Medium capacity and medium discharge:

If you’re looking for an in-between battery, have a look at the following batteries. These are relatively high capacity (around 3000mAh) and a relatively high discharge rate. These types of batteries are great if you want to have a balance between runtime and output.

Bear in mind, that many flashlights don’t need high-discharge cells, so a balance between capacity and discharge is great.

Sony Murata VTC6
  • Max. continuous discharge: 30A
  • Capacity: 3000mAh
  • Link to review
Samsung INR18650 30Q
  • Max. continuous discharge: 15A
  • Peak discharge: 26A
  • Capacity: 3000mAh
  • Link to review
  • Sony Murata VTC6 (Max continuous discharge current: 30A, capacity: 3000mAh) (Link to review)
  • Samsung INR18650 30Q (Max. continous discharge: 15A, peak discharge: 26A, capacity: 3000mAh)(Link to review)

Best 21700 battery for flashlights

All of the above can be said for 21700 batteries as well. But generally speaking, 21700 batteries have more capacity AND a higher discharge rate than 18650’s. So it’s good to know that, even the higher capacity batteries, still produce a lot of amps! This means that you can get a high output and great runtime at the same time.

Oftentimes, popular manufacturers include good and trustable batteries with their lights, and the difference in output is usually negligible. You won’t really notice the difference between 5500 lumens and 6000 lumens.

Also, before going any further, I’d like you to have a look at our list of some of the best 21700 battery chargers as well.

Popular HIGH DRAIN / HIGH DISCHARGE 21700 batteries:

21700 flashlights have become more mainstream in the last couple of years. It took a while, but when you look purely to the number of reviews we do, the 21700 flashlights have surpassed the 18650 ones.

In order to get the highest output, you need to look at the peak discharge as well as the max. continuous discharge rates. For all the batteries I linked to a review done by HKJ or somebody at budgetlightforum.

Keep in mind that these cells are mostly sold as flat top, unprotected cells. If you want button tops, you have to search a bit, since they are rare to come by, and quickly sold out.

Samsung INR21700 40T
  • Max. continuous discharge: 35A
  • Max. peak discharge: 45A
  • Capacity: 4000mAh
  • Link to review
Samsung INR21700 30T
  • Max. continuous discharge: 35A
  • Max. peak discharge: 61A
  • Capacity: 3000mAh
  • Link to review
Molicell INR21700 P42A
  • Max. continuous discharge: 45A
  • Max. peak discharge: N/A
  • Capacity: 4200mAh
  • Link to review

Some popular HIGH CAPACITY 21700 batteries, with good discharge ratings:

At 1lumen.com we use the Samsung INR21700 50G as our default battery for testing. It gives a nice balance between performance and capacity.

Samsung INR21700 50E
  • Max. continuous discharge: 9.8A
  • Rated capacity: 5000mAh
  • Min. capacity: 4900mAh
  • Link to review
Samsung INR21700 50G
  • Max. continuous discharge: 15A
  • Rated capacity: 5000mAh
  • Min. capacity: 4850mAh
  • Link to review
Lishen LR2170SD
  • Max. continuous discharge: 9.6A
  • Rated capacity: 5000mAh
  • Min. capacity: 4800mAh
  • Link to review

Flashlight Batteries Conclusion:

Make sure you know what kind of battery you need. If you don’t know what battery to get for your flashlight, ask the seller. If you order a flashlight and want to know what battery fits best, ask the seller as well. Oftentimes, manufacturers include batteries, so I’d suggest using them.

Several things you need to keep in mind:

  1. Does the flashlight accept button tops or flat tops
  2. Does the flashlight accept protected batteries (these are longer)
  3. What’s the highest output, and what is the highest discharge current the flashlight needs.
  4. Do I care about sacrificing 10% of lumens over 10% of runtime

Batteries to stay away from: Fake specs & dangerous batteries

Be warned of the following batteries. Any 18650 with a higher capacity of 3600mAh is a lie!

Take especially note of the 2 red Ultrafire batteries, which look alike, and there are many variations. Some show 3000mAh, some show 4200mAh, but there are multiples that are just dangerous and fake.

Don’t buy any of the following batteries at any time.. Even if the mAh numbers are slightly different.

Places to buy

There are a couple of trustworthy places around the globe that we can recommend.

Nkon.nl (Europe)

https://www.18650batterystore.com/ (USA)

https://liionwholesale.com/ (USA)

Wuben Long-Lasting Flashlight Battery – Flashlight Accessory


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ABE2600C 18650 Battery – 2600mAh

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$9. 60

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$9.60

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WUBEN 2600mAh High Capacity 18650 3.7V Rechargeable Li-ion Battery Cell compatible with L50 or C3…

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ABE3400 18650 Battery – 3400mAh

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$17.80

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ABE3400 is a rechargeable protected 3400mAH battery, which is compatible with the most flashlights and…

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ABF750R 14500 750mAh Battery

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$9.69

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$9. 69

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ABF750R is a rechargeable protected 750mAH battery, which is compatible with the most flashlights and…

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ABT5000C 26650 Battery

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$29.99

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$29.99

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ABT5000C is a rechargeable protected 5000mAH battery, which is compatible with the most flashlights and…

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ABD4800 21700 4800mAh Battery

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$26.80

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$26.80

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ABD4800 is a rechargeable protected 4800mAH battery, which is compatible with the most flashlights and. ..

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ABE3100C 18650 3100mAh Battery

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$17.39

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$17.39

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ABE3100C is a rechargeable protected 3100mAH battery, which is compatible with the most flashlights and…

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ABD4800R 21700 4800mAh Battery

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$26.80

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$26.80

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ABD4800R is a rechargeable protected 4800mAh battery, which is compatible with the most flashlights and…

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A9 Spare Battery

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WUBEN A9 spare battery 10200mAh battery

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Xiaomi Flashlight Power Bank 3350 mah Silver (LPB01ZM)

Compact and bright. Portable flashlight with adjustable light output

Mi Portable Flashlight is the perfect solution for a small pocket flashlight that you can take with you on nature, a walk or a long trip. The brightness of the device is enough to illuminate even the darkest sections of the road. It’s great for illuminating steps in a stairwell, lighting up the inside of a camping tent at night, or simply providing good visibility when driving on unlit sections of the road.

The perfect solution for lovers of evening walks

Do you like evening walks under the moonlight? But roads, yards or nooks and crannies of the city are not always well lit. A portable flashlight flashlight will help solve this problem. With it, even the darkest sections of the sidewalk or road will be sufficiently illuminated so that you can see all possible obstacles.

Portable bicycle light. Cyclist road lighting

Minimalistic, rounded design of handheld device, allows you to install it on the handlebars of a bicycle. To do this, you can use a standard latch that securely fixes the flashlight (not included in the package), which will help you more safely ride a bike in the dark.

Maximum light output 240 Lumens. Good visibility even on dark roads

Special built-in Lumileds LED provides 240 Lumens (maximum value) and continuously adjustable light output. By rotating the upper ring of the flashlight, you can increase / decrease the intensity of the light flux, which will allow you to choose the most comfortable lighting conditions for the eyes.

Robust construction. Aluminum alloy body

The body of the product is made of aluminum alloy, emphasizing the strength and durability characteristics of the device. In addition, the surface of the device is scratch-resistant and anti-slip surface – thanks to which the flashlight “does not slip” and fits comfortably in the user’s hand.

More than 3. 5 hours on a single charge. Emergency SOS

The built-in 3350 mAh battery combined with energy-saving technology is enough to power the flashlight for approximately 216 minutes (maximum brightness mode).
The flashlight has an emergency SOS mode that, by means of three short and bright flashes, will help notify other people that you need help, for example, if you get lost in the forest.

External battery function

The mode button, in conjunction with a standard USB connector, allows you to charge smartphones, smart watches, Bluetooth headsets and other devices that need to be recharged. The SY69 chip is responsible for the balanced power supply of the device.18.
The flashlight can also be used with other low voltage equipment such as a portable fan.

Specifications:

  • Battery capacity 3350 mAh;
  • Run up to 216 hours on a single charge;
  • Charging power 5V/1A, low current mode;
  • Light output up to 240 lm;
  • 11 brightness levels;
  • SOS mode (Activated by 3 clicks on a single button on the back).

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