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UltraFire FLB 18650 3000mAh 3.7V High-Capacity Protected Lithium Ion (Li-ion) Button Top Battery - Bulk

UltraFire FLB 18650 Standing
UltraFire FLB 18650 angle
UltraFire FLB 18650 side
UltraFire FLB 18650 rear
UltraFire FLB 18650 box
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UltraFire FLB 18650 Standing
UltraFire FLB 18650 angle
UltraFire FLB 18650 side
UltraFire FLB 18650 rear
UltraFire FLB 18650 box
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| Reg. Price $9.95
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Ultrafire 18650 - 3000mAh

Button Top Li-ion Battery

Heavy duty capacity 18650 battery for high drain devices

With tremendous capacity and value, the Ultrfire 3000mAh 18650 is a high powered li-ion battery that is perfect for demanding electronics such as tactical LED flashlights. These batteries feature 3.7 Volts of power and a top of the line 3000mAh capacity that will keep high drain electronics running longer than competing power sources. Combined with reliable manufacturing quality and bulk value pricing, the Ultrafire 18650 is one of the best deals when it comes to li-ion power.

PCB Protected

Equipped with the latest technology for complete safety

Each Ultrafire 18650 is outfitted with a uniquely designed PCB (printed circuit board) that functions as the brain of the battery, regulating output and intake of electrical charge. Thanks to the circuit board the battery is always safe to use and charge, as it will cut off the battery if the voltage drops below 2.5V or exceeds 4.25V. You can rest assure that your battery will perform perfectly every time since it's PCB protected!

Features & Benefits:
  • Lithium Ion 18650 cylindrical rechargeable battery
  • Internal PCB protection prevents under voltage (2.5V) or over-voltage (4.25V))
  • Higher energy density than competing rechargeable batteries
  • Manufactured under ISO9001-2000 to assure quality
  • International Electrotechnical Commission (IEC) standard tested to ensure capacity, quality and lifespan
  • Great for LED flashlights and high drain devices
  • Capacity: 3000mAh
  • Nominal Voltage: 3.7V
  • Cut-off Voltage: 2.5B
  • Internal Impedance: ≤ 180 Milli-Ohms
  • Cycle Performance: 90% of initial capacity at 400 cycles
  • Charge Cycles: 500
  • Charging Current: 0.5C (~1500mA) Voltage = 4.2 V End Current = 0.01 mA
  • Discharging Current: 0.5C (~1500mA) End Voltage = 3.0V
  • Dimensions:
    • Diameter: 18.6+/-0.2 mm *
    • 66.5+/- 0.2mm
  • Weight: 48g
  • * Note: These high capacity cells have a larger diameter than standard 18650 batteries and may not fit all flashlights. Please verify dimension of flashlight or device.

Battery Size:18650
Battery Capacity:3000mAh
Battery Chemistry:Li-Ion
Battery Voltage:3.6 / 3.7
Battery Terminal Type:Button Top
Battery Shelf Life:3 Years
Warranty:Battery Junction 30-Day Warranty
Return Policy:Battery Junction Return Policy
Product Weight:1.693oz
Product Dimensions:2.618" (L) x 0.732" (Diameter)
Country of Origin:CN
Associated Battery Sizes:168A, 18650, 19670, Protected 18650, Unprotected 18650
28 Reviews
46% (13)
25% (7)
7% (2)
18% (5)
4% (1)
50% Recommend this product (14 of 28 responses)
By P. Brady
November 30, 2017
Fit the bill
I needed to replace the very poor quality 18650 that came with a flashlight with something a bit better. This fit the bill nicely. With purchasing two of them, so I can have a charged spare, I should be in good shape to keep things illuminated when necessay.
By Jo
New Jersey
November 2, 2017
Not that great
I purchased a UltraFire 3000mAh battery for my Nitecore HC60 and noticed after about 3 months that the level 5 (highest setting) would not work even right after a charge. The battery seems to not be holding the voltage when loaded. This will probably be the last battery I purchase from UltraFire. NOTE: I was using a NiteCore D2 charger.
October 11, 2017
Ultrafire battery
Not the best brand for batteries
By Phil
Gettysburg, PA
August 7, 2017
Excellent battery
This battery outlasts every one of my "advertised" higher amp batteries (including 6,000 and 9,800)...BY FAR. Compared my 6,000 and 9,800 to this Ultrafire 3,000 (using identical flashlights) and the Ultrafire lasted more than 4 times as long as either of them.
ProsBest battery on the market. Make sure you get the "protected" battery to ensure you do not over-charge.
ConsAbsolutely none
By Glenn Kautt
Round Hill, VA
July 11, 2017
Just as ordered
Arrived promptly, charged up. Took a charge and continues to work. Just as ordered!
By Barry
January 24, 2017
Great power
This is the way to go when u need a few batteries of a high quality at a very competitive price. Battery Junction always has the deals you need so shopping around isn't needed.
By Harley
Eagle Lake Texas
April 26, 2016
I can see clearly now !
My headlamp takes 2 of these 18650 batteries so I want lasting power !! These batteries DELIVER ! I am very happy with them and I recommend them HIGHLY !
By steven weaver
April 21, 2016
battery review
the battery was very powerful and it only took about two weeks to come in thank you for your outstanding service
By Bruce
Silicon Valley
March 28, 2016
Oh, really...
I bought one of these and it sure didn't seem to hold power for very long-at least not like the hype would make you think. I found these batteries reviewed on YouTube. They didn't seem to like them very much either. I'm going back to spending my money on Samsung.
By DW Hubert
Hancock Co, Mississippi
December 7, 2015
Great Power @ Great Prices!!!
Great rechargeable batteries for 3000 lumen head lamp!! Need reliable and renewable energy for face melting LED lighting? Ultrafire DELIVERS US FROM DARKNESS!!!!
ProsLightweight Reliable and Reusable Cost effective
ConsAs of the date of this review-NONE!
By Steve
Trumbull, CT
July 9, 2015
These things are lite and powerful
My experience with these rechargables has been nothing but positive. They are lighter than the 2500mAh rechargeable batteries that I own produced by the same manufacturer, and they run longer, meaning less frequent trips to the charger. The appearance of the packaging has improved as well. When you take into account how many CR123's this one battery takes the place of, the price is very reasonable.
Proslow weight , high capacity , improved appearance
ConsNone yet
By David
\White oak PA
May 26, 2015
Ultrafire 18650 3000mah BUTTON TOP Protected Rechargeable Lithium Battery Li-Ion UF18650-BRC Was: $19.95 Sale Price: $10.95
I bought the same previously and it works great. Lasts a long time .
By Tony
Central PA, USA
April 21, 2015
Working Good for My Purposes
I don't run my lights on turbo for extended minutes, so I can't say if these would step down like some users have reported. I use my lights for brief scans, and only use turbo mode outdoors to scan a large perimeter around myself for safety, then usually step it down, especially if I'm going to be walking and needing it on for a while. I can say that when I had two of these in the same light, one of the two seemed to discharge a little quicker than the other, but not severely. That might indicate spotty quality, which I see reported with these less expensive batteries. My experience so far has generally been good. I've had them since November, 2014, so that's not a really long evaluation period. So far, I like them for the price.
ProsLess expensive alternative which will get you up and running until you can get some premium batteries
ConsVariance in quality? Maybe. Large diameter could be a problem in some lights - so PLEASE READ the description.
By Nik
New England
December 30, 2014
In the recycling bin
I bought four of these cells during the black Friday promotional time period around Thanksgiving along with Nitecore D2 charger. I began using them in my lights and noticed the lights quit much sooner than they do when I run them on the Titanium Innovations CR123A batteries sold by Battery Junction for $1.00 each. This prompted me to do a somewhat scientific test. I began by charging the batteries fully. The D2 indicates the fully charged voltage and I verified this with a multi meter. Next I switch on NFL pregame, installed one of the four batteries and set my light on medium. According to the light's specification, the light will run 3 hours at a steady 250 lumens. The light quit after 26 minutes. Long before I finished watching the play off bound Patriots lose what turned out to be pre-season game against Buffalo, I had tested all four batteries and all four powered the light for 26 minutes or less. I had to do a post-Christmas run to the town dump and recycling center so I took that opportunity to drop off the four in the battery recycling area. $35 wasted. On a side note, the Nitcore D2 seems to work well so far. Now I just need to find some batteries worthy of keeping.
ConsThe outer skin is peeling off
By christopher
Timonium, MD
December 29, 2014
Great price
So far they seem to be holding up well
By jkirty
sac town
December 27, 2014
powerfull batteries
Charged great, super bright light now. thanks BJ
Prosfull charged power house
Conswhat u kidding me they work great
By Bob
December 25, 2014
They don't last
These are in no way 3000mah capacity. They run less than an hour of total, intermittent, run time in my Olight M22 before needed to be recharged.
ConsNo capacity
By Brad
December 21, 2014
Make sure batteries are good.
I purchased 2 of these batteries. I ran one on high at 600 lumens for 3 hours straight. It held up really well. The other battery i received is a dud. I have attempted to charge it in my nitecore i2 charger and nothing happens no lights light up. The charger is good because the good battery works in both battery charging bays. The bad battery does nothing. The bad battery wouldn't be worth returning when including shipping costs.
ProsWorks good if you receive good batteries
By Eric
morganton, NC
November 18, 2014
Powerful batteries that cause my Fenix flashlight to stream a bright white light and makes the dark go away. They charge easily and hold a charge better than average, but are still a little pricey.
By Bradley david
May 20, 2014
Never runs out!
Love this battery!
ProsHolds a charge for a long time.
By billy
May 19, 2014
Decent batteries
These have worked well but the wrapping eventually started to break down exposing pcb.
ProsDecent power, price
ConsNot true 3000mah, brittle wrapped pcb
By James L.
January 9, 2014
Poor reliability
Got 4, they worked fine at first, but all 4 have failed in a 2 year period.
By davekram
December 17, 2013
Very Good
I just got these batteries & Charged them yesterday and and started my testing today, using my \"Innova\" tester that puts a load on, when testing, Reading before test was 4.08V.. Put my \"Nitecore\" SRT6 930 Lumen on turbo for 19 minutes, then tested the voltage again, with a reading of 3.93V.. I feel these will hold up pretty good..Battery worked just fine.. I\'ve read about complaints about these type of batteries being out round, and that is true an average of .012 mainly located at the top (+) were the overload device is located(.715-.727), but a device made for #18650 has more than likely compensated for this.. Even Alkaline Batteries like AA (EverReady & Duracell) are out of round an average of .006..
By Jim D
March 31, 2012
Poor Quality
I\'ve tried to make these work for me, but unfortunately, they just can\'t handle the higher current enthusiast lights. These will probably work fine in lower draw 18650 lights, but in high current situations (IE: TK35 Turbo, TK12 Turbo, NiteCore TM11 High) they go into protection in less than 3 minutes. I\'ve relegated them to backups, but it\'s unfortunate at this price.
By Fernando Laguna
May 19, 2011
Bang for the buck
I bought these batterys for my olight M20 and Tk11 and they work fine. Depending how much I run turbo on them these cells last for a long time. Esp now since I\'ve upgraded to the new XML lights thats come out. I plan on buying more maybe 4 more. Did I mention you wont have to buy new batteries every few weeks.
By James
December 6, 2010
Just an FYI: This cell fit into my Fenix TK15 with no modifications to the wrapper. I recommend this cell.
By Vinnie
July 2, 2010
Portable power plants
These are excellent batteries I use them in my fenix TA-21 with only 1 modification to make them fit better. I remove the top 1/2 inch of outer label at the positive tip end to make it slide in better. It\'s not the flashlight or the batteries fault it\'s where the battery is seamed and the label adds just a cpl thousanths of an inch in the one spot to make the battery too tight to remove easily. These are quality LI-ion\'s and worth every penny to have the power these batteries store
By Kerry
April 30, 2010
great buy
I got a pair of these batteries to go in an Olight M30 and they keep my Olight bright and working for a really long time. I use my light about 15-20 hours a week (not consecutive hours) and with a full charge they last me a weeks time.
6 Questions & 6 Answers
Guy Wood
from Grants Pass, Oregon asked:
October 22, 2014
Will these batteries fit the Nitecore P10 LED flashlight?
1 Answer
Yes, these UltraFire 18650 batteries do fit the Nitecore P10.
Customer Service
on October 23, 2014

from Fresno, CA asked:
August 31, 2014
Will this battery fit the Fenix HP30 headlamp?
1 Answer
Yes, this Ultrafire 18650 battery will fit and work in the Fenix HP30 headlamp.
Customer Service
on September 2, 2014

Jeff Sourbeer
from Belleair, Florida asked:
August 29, 2014
Will this battery fit the Fenix PD35 2014 edition?
1 Answer
Yes, this Ultrafire 18650 battery will fit and work in the Fenix PD35 2014 Edition.
Customer Service
on September 2, 2014

Allan abrazaldo
from North las vegas asked:
July 5, 2014
Will this battery fit the Nitecore HC50 and Nitecore EC25?
1 Answer
Yes, this 18650 battery will fit both the HC50 and EC25 lights.
Customer Service
on July 9, 2014

from San Gabriel, California asked:
June 29, 2014
Will this battery fit in the Nitecore Intellicharge i2 2-Channel Smart Battery Charger for Li-Ion, Ni-Cd,& Ni-MH by Sysmax?
1 Answer
Yes, this battery will charge in the Nitecore i2 Intellicharger.
Customer Service
on June 30, 2014

Nan Smith
from Great Lakes Area asked:
May 5, 2014
Will this battery work properly and FIT in an Olight M18 maverick or an Olight M22 Warrier?
1 Answer
Yes, this battery will work in both the M18 Maverick and M22 Warrior flashlights.
Customer Service
on May 5, 2014

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UltraFire FLB 18650 3000mAh 3.7V High-Capacity Protected Lithium Ion (Li-ion) Button Top Battery - Bulk

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