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Nitecore NL1834 18650 3400mAh 3.7V Protected Lithium Ion (Li-ion) Button Top Battery - Blister Pack

Nitecore NL1834 18650 3400mAh 3.7V Protected Lithium Ion (Li-ion) Button Top Battery - Blister Pack
Nitecore NL1834 18650 3400mAh 3.7V Protected Lithium Ion (Li-ion) Button Top Battery - Blister Pack
Nitecore NL1834 18650 3400mAh 3.7V Protected Lithium Ion (Li-ion) Button Top Battery - Blister Pack
Nitecore NL1834 18650 3400mAh 3.7V Protected Lithium Ion (Li-ion) Button Top Battery - Blister Pack
Nitecore NL1834 18650 3400mAh 3.7V Protected Lithium Ion (Li-ion) Button Top Battery - Blister Pack
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Nitecore NL1834 18650 3400mAh 3.7V Protected Lithium Ion (Li-ion) Button Top Battery - Blister Pack
Nitecore NL1834 18650 3400mAh 3.7V Protected Lithium Ion (Li-ion) Button Top Battery - Blister Pack
Nitecore NL1834 18650 3400mAh 3.7V Protected Lithium Ion (Li-ion) Button Top Battery - Blister Pack
Nitecore NL1834 18650 3400mAh 3.7V Protected Lithium Ion (Li-ion) Button Top Battery - Blister Pack
Nitecore NL1834 18650 3400mAh 3.7V Protected Lithium Ion (Li-ion) Button Top Battery - Blister Pack
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Nitecore NL1834 18650 Battery

3.7V 3400mAh

Incredibly powerful and remarkably safe, the Nitecore NL1834 18650 Battery is the best 18650 on the market! These incredible Lithium Ion batteries deliver an impressive 3.7 Volts of power and are capable of holding a charge of up to 3400 mAh, which is 62% more than the average 18650, making them perfect for high performance devices like the intense LED flashlights from Nitecore, as well as video game consoles, appliances, and more. The NL1834 comes with a sophisticated high-performance protected circuit that prevents the cell from overcharging and discharging, which can cause long term damage to the battery. The cell is capable of being recharged over 500 times, making it not only cost effective, but environmentally friendly as well.

Safe Design

Nitecore understands that safe use of a battery is just as important as the battery's production. Designed with safety in mind, the NL1834 features nickel-plated S.S. protectors at both ends that give the cell superior impact resistance, better electrical conductivity and quality oxidation resistance. To prevent against abrasions and other external damage, the cells are coated with a durable metallic film, while its protection circuit is coated with hard plastic. The battery features a unique anode that is designed to resist high temperatures, as well as a micro-porous barrier on the interior that protects the delicate internal components. The cell even comes with a specialized pressure relief valve that will activate in the event the battery experiences rapid temperature increase.


  • Intelligent protection circuit prevents overcharging / over-discharging
  • Nickel-plated S.S. protectors on either end provide quality impact resistance, electrical conductivity, and oxidation resistance
  • Durable metallic film coating to protect against abrasions
  • Micro-porous barrier on the cell's interior protects internal components
  • Pressure relief valve activates in the event of sudden temperature increase


  • Battery Size: 18650
  • Battery Chemistry: Lithium Ion (Li-Ion)
  • Voltage: 3.7V
  • Capacity: 3400 mAh
  • Max Charging Current: 2A
  • Recommended Charging Current: 1A
  • Estimated Charge Cycles: 500 cycles
  • Max Discharge Current: 4A
  • Diameter: 0.72" (18.4mm)
  • Height: 2.72" (69.2mm)
  • Weight: 1.67 oz (47.6 g)
Battery Size:18650
Battery Capacity:3400mAh
Battery Chemistry:Li-Ion
Battery Voltage:3.6 / 3.7
Battery Terminal Type:Button Top
Battery Shelf Life:3 Years
Packaging:Blister Pack
Warranty:Battery Junction 30-Day Warranty, Nitecore 1 Year Warranty
Return Policy:Battery Junction Return Policy
Product Weight:1.679oz
Product Dimensions:2.724" (L) x 0.724" (Diameter)
Country of Origin:CN
Associated Battery Sizes:168A, 18650, 19670, Protected 18650, Unprotected 18650
70 Reviews
87% (61)
9% (6)
1% (1)
1% (1)
1% (1)
96% Recommend this product (67 of 70 responses)
By Stephen
Palm Springs, CA
December 23, 2016
Consistently great
I've only used a couple of brands of 18650 with my headlamp, and these nitecore 3400mAhn lithium batteries are fantastic. They last SO long! I am not sure if it's the light, the battery, or my imagination, but the light also stays consistently bright almost right up to the time it finally gives out before needing a charge. Sorry this is not more of a technical review, but I'm just an everyday user of a headlamp that I rely on a great deal, and the best I can offer is that I am very, very satisfied with these batteries.
ProsLong, consistent light throughout the span of one charge. The amount of charge, and thus the time between charges is truly remarkable. All around great batteries.
ConsSeems to take a long time to fully charge--but that could be because I am using the device instead of a separate charger. Still, plugging it in at night renders it fully charged by morning.
By Sean
Los Angeles, CA
December 4, 2016
Long Lasting, High Quality
I use these batteries in ALL my flashlights, high quality and fit in the varied flashlights I own. The 3400's last way much longer than the 2600 batteries I used to run and much brighter than the Panasonic 3.6V's I own. Also added bonus of protection gives peace of mind when charging, all this at a great price -even better when they're on sale!
ProsLong lasting, lots of power at 3.7Vs, high quality at a great price
ConsWas sent a battery that had a tear in its wrapper that started to spread, it was immediately replaced by Battery Junction -GREAT customer service!
By Phil
December 17, 2017
great batteries
These are very good batteries
By Ed In NC
Holly Ridge, North Carolina
December 17, 2017
Great Battery
I Purchased 10 batteries and wasn't disappointed! A little expensive, but quality/reliability makes the purchase worth while. They will be ready when you need them!
By Thomas
reading, PA
December 13, 2017
Great battery
Outlasts and out performs CR123A
By Eric
December 11, 2017
So far So good
Haven't had the battery long enough to give it a thorough rating. It does take a little while to charge, but the battery seems to last a good long time. It works well with the Nitecore flashlights. This is the main reason for buying it. Previously was using the CR123, which works fine, but I wanted to see if I could find something that lasted a little longer.
ProsGood price rechargeable long life
Conscharging time
By Martin
spokane, WA
November 30, 2017
pefect battery for everyday use, holds alot of power
Have used this battery with nitecore light. Perfect choice if you want something that is ready when called upon.
ProsHigh capacity
By Noah
New York, New York
November 29, 2017
No regrets
I have rarely needed to charge this battery in the last 15 months of ownership. My usage is fairly light (get it?) but this supports my Nitecore P12GT flashlight very well.
By Al
October 17, 2017
Overpriced, underperformer
No better than the much more economical Panasonics. One doesn't even want to charge properly. Waste of money. I'm using them for flashlights, and have four of each brand. I'll stick with the cheaper brand.
ConsHigh price. No benefits.
By Ed Johnson
Bloomingdale, NJ
September 11, 2017
I'm confident
Still to be put to the right test to know for sure, but, I'm fairly confident that these batteries will perform well.
By Joe
Oakville, CT
September 2, 2017
Top Shelf Battery
What more need be said. This is a great battery!
By chuck
August 16, 2017
rechargable and saves me on AAA batteries
works as described in my powerful flashlight
Pros3400 mAh powerful
By Micky
Nasville, TN
July 27, 2017
Expensive Electronics deserve a Battery you can TRUST!
Purchased 8 batteries and wasn't disappointed! Yes a little expensive, yet quality/reliability makes the purchase worth while. Rest assured they will be ready when you need them!
By Glen
Coos Bay, OR
July 5, 2017
Protected Li-ion batteries is the correct choice for flashlights.
Bought unprotected 18650 batteries for a Jetbeam lite and they didn't measure one didn't hold a charge & the other lasted 10 min. before fading out. Flashlights require Protected Li-ion batteries when I charged the NL1834 batteries and put them in the lite, it produced the light that was advertised. Battery Junction could be more explicit about which batteries are required for flashlights,and saved the first ones from having to be returned. The right batteries really do perform as advertised.
By David
June 22, 2017
the real deal
These were the real deal ,I weighted them and they came in at 47 grams
By Dan
The Dalles, OR
June 6, 2017
Nitecore 3400mAh Battery
These are a great, long lasting battery! If you are in a situation where you may have to use your light for an extended length of time, these are to ones to get. The downside is that they are expensive, but if you wait till they are on sale, it helps. So far no failures, unlike some other brands of 18650's I have used.
ProsLong use life
By Gary
St. Petersburg, Fl
June 6, 2017
Brighten the Day , Light Up the Night !
Consistently charge to Max. 4.2 Powers my torches to blazing brilliance.
By Paul Shepherd
June 1, 2017
Great Batteries
Work great
By Vincent
Minneapolis, Minnesota
June 1, 2017
This battery works great with my flashlight.
Put the battery into my flashlight the battery was charged and ready to get working.
By The Tech Builder
Orlando Florida USA
April 23, 2017
Great Long Use Batteries
I use these with both my JetBeam Flashlights. I charge them about once a month and use them on a daily basis. The batteries are very good have no issues with charging or longevity. The make fit and feel of the units are very nice. So far I have had one for 14 months and use till dead then recharge. I use a Smart Nitecore Digital charger and it works perfectly. Just remember use a charger that is NOT cheap and has a onboard computer to sense charging and you can squeeze 3-4 years out of a battery.
ProsWell Made good Quality
By Michael
April 21, 2017
Buy when discounted.
Good price with discount
ConsNo case
By ronald dehart
LA - Louisiana
April 17, 2017
this is one awesome battery.
i really like this battery. it holds a charge like forever it seems. i'm very happy with it.
Perrysburg, OH
March 15, 2017
Excellent product
Good product and great quality for the price. I am very pleased with these batteries. I would buy again.
By Sergio
March 15, 2017
Awesome battery
This battery is powering a high intensity flashlight. My old battery would last about 3-4 hours on the brightest setting. This battery lasted about 6-8 hours.
ProsThis battery has super powers.
By Security Man
March 7, 2017
Superior Product
I use them in a Nitecore TM16 Flashlight. Works fine every time for a long time. If you want to light up the night, the TM16 is what you want to do it with and these batteries (power cells) are what you want to use.
ProsA superior product
By William Mayo
February 9, 2017
Although this product was expensive, it appears to be of good quality.
Prosgood quality
Conshigh price
By S. Holt
Highwood, IL>
January 16, 2017
Takes a licking but keeps on working….
These batteries are long lasting between a charge. Thereafter, they charge quickly and hold their charge with no depletion. When they are depleted they stop working completely, so I always keep a spare set on hand, while I re-charge the first set. I recommend them to all.
ProsLong lasting, quick charging.
By Arrow
December 21, 2016
Doesn't live up to its kin.
I have only had this battery in use for a little bit, but one thing I noticed right off was that it didn't maintain the same capacity as the 2300 mAh nitecore NL183. It does however exceed its noted capacity of 3.7 v. This difference is pretty slight, but was surprising that the larger mAh was less. So far, it is still a good battery, and I would recommend it. Especially for a lesser price.
By Rand
Vista, CA
December 20, 2016
Great Battery
Great long lasting battery. This is my 3rd order for these.
ProsLast a long time.
By Specagnt
December 19, 2016
Best value
Got at a good deal during black friday.
9 Questions & 9 Answers
from Easton, PA asked:
June 23, 2015
How many batteries are in a blister pack?
1 Answer
These batteries are sold individually.
Customer Service
on June 23, 2015

from RANTOUL,IL asked:
March 21, 2015
Will this work with my MH10?
1 Answer
Customer Service
on March 23, 2015

Ken Dow
from San Francisco, California asked:
November 26, 2014
Is this a button top battery?
1 Answer
Yes, the NL189 18650 is a button top battery.
Customer Service
on November 30, 2014

from Baltimore, Maryland asked:
November 6, 2014
Will this battery work in a Klarus XT12?
1 Answer
Yes, this Nitecore 18650 is compatible with the Klarus XT12.
Customer Service
on November 6, 2014

from Sanford, NC asked:
September 14, 2014
Will the Nitecore 18650 Li-Ion battery (NL189) fit into a Fenix PD35 flashlight and/or a Fenix TK22 flashlight?
1 Answer
Yes, this 18650 battery will fit in the TK22 and PD35 flashlights.
Customer Service
on September 15, 2014

from TX asked:
July 20, 2014
Will this battery work in the TM11?
1 Answer
Yes, the Nitecore TM11 is compatible with 18650 batteries.
Customer Service
on July 21, 2014

from SWF asked:
May 22, 2014
Nitecore states it can run on 18650. I see Nitecore has several 18650 rechargeable batteries with different mAh? I know nothing about battery tech. Will the SRT run on all of the nitecore 18650? I suppose the higher the mAh number the better or longer or brighter?
1 Answer
Yes, the SRT5 is compatible with all of the Nitecore 18650 batteries. The mAh refers to the capacity of the battery, which means the higher the mAh, the longer the runtime.
Customer Service
on May 23, 2014

from Massachusetts asked:
April 18, 2014
How long is the charge time on these?
1 Answer
It depends on the charger you are using. It varies between 1-3 hours.
Customer Service
on April 18, 2014

from VA asked:
April 17, 2014
does this come with a charger? If not, which charger would work with it?
1 Answer
This battery does not come with a charger. The Nitecore i2 Charger or Nitecore i4 Charger would be great options to charge Li-ion batteries.
Customer Service
on April 17, 2014

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Nitecore NL1834 18650 3400mAh 3.7V Protected Lithium Ion (Li-ion) Button Top Battery - Blister Pack

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