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Ultrafire 18650 3000mAh 3.7V Protected Lithium Ion (Li-ion) Button Top Battery - Bulk (FLB-18650-3.0)

Ultrafire 18650 3000mAh 3.7V Protected Lithium Ion (Li-ion) Button Top Battery - Bulk (FLB-18650-3.0)
Ultrafire 18650 3000mAh 3.7V Protected Lithium Ion (Li-ion) Button Top Battery - Bulk (FLB-18650-3.0)
Ultrafire 18650 3000mAh 3.7V Protected Lithium Ion (Li-ion) Button Top Battery - Bulk (FLB-18650-3.0)
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Ultrafire 18650 3000mAh 3.7V Protected Lithium Ion (Li-ion) Button Top Battery - Bulk (FLB-18650-3.0)
Ultrafire 18650 3000mAh 3.7V Protected Lithium Ion (Li-ion) Button Top Battery - Bulk (FLB-18650-3.0)
Ultrafire 18650 3000mAh 3.7V Protected Lithium Ion (Li-ion) Button Top Battery - Bulk (FLB-18650-3.0)
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| Reg. Price $19.95
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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:3.7
Battery Terminal Type:Button Top
Battery Shelf Life:3 Years
Warranty:Battery Junction 30-Day Warranty
Return Policy:Battery Junction Return Policy
Country of Origin:CN
Associated Battery Sizes:168A, 18650, 19670, Protected 18650, Unprotected 18650
Ultrafire 18650 3000mAh 3.7V Protected Lithium Ion (Li-ion) Button Top Battery - Bulk (FLB-18650-3.0)
4 Stars based on 23 Review(s)
5 Stars
I would recommend this item to a friend.

Great power
January 24, 2017
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.

Eagle Lake Texas
5 Stars
I would recommend this item to a friend.

I can see clearly now !
April 26, 2016
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 !

steven weaver
5 Stars
I would recommend this item to a friend.

battery review
April 21, 2016
the battery was very powerful and it only took about two weeks to come in thank you for your outstanding service

Silicon Valley
2 Stars

Oh, really...
March 28, 2016
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.

DW Hubert
Hancock Co, Mississippi
5 Stars
I would recommend this item to a friend.

Great Power @ Great Prices!!!
December 7, 2015
Great rechargeable batteries for 3000 lumen head lamp!! Need reliable and renewable energy for face melting LED lighting? Ultrafire DELIVERS US FROM DARKNESS!!!!
Lightweight Reliable and Reusable Cost effective
As of the date of this review-NONE!

Trumbull, CT
5 Stars
I would recommend this item to a friend.

These things are lite and powerful
July 9, 2015
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.
low weight , high capacity , improved appearance
None yet

\White oak PA
5 Stars
I would recommend this item to a friend.

Ultrafire 18650 3000mah BUTTON TOP Protected Rechargeable Lithium Battery Li-Ion UF18650-BRC Was: $19.95 Sale Price: $10.95
May 26, 2015
I bought the same previously and it works great. Lasts a long time .

Central PA, USA
4 Stars
I would recommend this item to a friend.

Working Good for My Purposes
April 21, 2015
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.
Less expensive alternative which will get you up and running until you can get some premium batteries
Variance in quality? Maybe. Large diameter could be a problem in some lights - so PLEASE READ the description.

New England
2 Stars

In the recycling bin
December 30, 2014
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.
The outer skin is peeling off

Timonium, MD
4 Stars
I would recommend this item to a friend.

Great price
December 29, 2014
So far they seem to be holding up well

sac town
5 Stars
I would recommend this item to a friend.

powerfull batteries
December 27, 2014
Charged great, super bright light now. thanks BJ
full charged power house
what u kidding me they work great

2 Stars

They don't last
December 25, 2014
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.
No capacity

3 Stars

Make sure batteries are good.
December 21, 2014
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.
Works good if you receive good batteries

morganton, NC
4 Stars
I would recommend this item to a friend.

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.

Bradley david
5 Stars
I would recommend this item to a friend.

Never runs out!
May 20, 2014
Love this battery!
Holds a charge for a long time.

4 Stars

Decent batteries
May 19, 2014
These have worked well but the wrapping eventually started to break down exposing pcb.
Decent power, price
Not true 3000mah, brittle wrapped pcb

James L.
1 Stars

Poor reliability
January 9, 2014
Got 4, they worked fine at first, but all 4 have failed in a 2 year period.

4 Stars

Very Good
December 17, 2013
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..

Jim D
2 Stars

Poor Quality
March 31, 2012
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.

Fernando Laguna
5 Stars

Bang for the buck
May 19, 2011
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.

5 Stars

December 6, 2010
Just an FYI: This cell fit into my Fenix TK15 with no modifications to the wrapper. I recommend this cell.

5 Stars

Portable power plants
July 2, 2010
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

4 Stars

great buy
April 30, 2010
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.


Ultrafire 18650 3000mAh 3.7V Protected Lithium Ion (Li-ion) Button Top Battery - Bulk (FLB-18650-3.0)

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