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  • 2- Pack 3.7v 3000mah Ultrafire 18650 Li-ion Rechargeable Battery
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2- Pack 3.7v 3000mah Ultrafire 18650 Li-ion Rechargeable Battery


Price: $7.90 & FREE Shipping on orders over $35. Details
Only 13 left in stock.
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  • battery
  • 18650
  • ultrafire
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Frequently Bought Together

2- Pack 3.7v 3000mah Ultrafire 18650 Li-ion Rechargeable Battery + 18650 3000mAh 3.7V Rechargeable Li-Ion Battery + Charger Combo
Price for both: $14.88

These items are shipped from and sold by different sellers.

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Technical Details

  • Brand Name: Etekcity
  • Item Package Quantity: 1

Product Details

  • Shipping Weight: 2.4 ounces (View shipping rates and policies)
  • ASIN: B0080LB2QW
  • Average Customer Review: 3.7 out of 5 stars  See all reviews (72 customer reviews)
  • Amazon Best Sellers Rank:
  • Date first available at Amazon.com: May 5, 2012

Product Description

2- Pack 3.7v 3000mah Ultrafire 18650 Li-ion Rechargeable Battery

Customer Reviews

The batteries work great.
David Blankenship
I tested these based on the standard slow 20 hour discharge rate, not a high rate which makes the batteries look even worse.
Spaceman
They hold a charge for a long time and work well.
T. Triol

Most Helpful Customer Reviews

Verified Purchase
After going through 5 different sets of these from different sources, Its hard to tell for certain which are "real" Ultrafires (I noticed some have printing and/or height differences between them), but ALL of them are poor after testing. All produced poor flashlight run time and with noticeable differences in time (they'd leave me in the dark randomly while walking my dogs nightly), so I did more research and found that 18650's are very commonly mis-labled knockoffs and/or recycled batteries produced in China, and my problems were far from unique. For more info and a testing and review of many batteries (he seems to have done lots of good work here): www dot lygte hyphen info dot dk you will find actual tests for 2012 of over 4 dozen 18650 batteries.

I'd advise against any "Ultrafire" or cheap batteries on Amazon (I've found 100% were much lower mAh than stated and I dont know why they allow this false advertising) and get Protected Panasonic cell batteries such as Orbtronic instead. I purchased 3400mAh Orbtronic protected batteries and tested them against 3000 mAh Ultrafire and another blue "5000mAh" no name cell purchased on Amazon twice and got run time of 1hr 21 and 1hr 23 mins for the Orbtronics vs 32 and 21 mins for the Ultrafires, and 18 and 12 mins run for "5000mAh" batteries in the same LED flashlight. This means you can relatively accurately estimate the BEST "3000 mAh Ultrafire" cells over my purchases to be actually 1350 to 850 mAh (45% to 28% of advertised) and the "5000 mAh" Chinese cells: 740mAh to approx 500mAh! (10% of advertised!) And yes that means the Orbtronics listed as 3400 mAh gave about SIX times more run time and were listed to be only 400 mAh higher.
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11 of 11 people found the following review helpful By Dave Schneider on December 5, 2012
Verified Purchase
I was able to run a flashlight for 15 mins on high... just doesn't seem right. I am going to take the reviews of others on UltraFire and steer clear with so many other options out there.
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13 of 15 people found the following review helpful By Afew Reviews on September 7, 2012
Verified Purchase
on the battery:
-Rechargeable battery with Re: discharging protection circuit
-do not dispose in fire..., -do not puncture..., -do not mix fresh w/ used
-UltraFire tm, -BRC 18650 3000mAh, -3.7V li-ion
-low discharge rate -no memory effect, -low reoccuring operating cost.
Short circuit, -and over current Protection. Shelf life around
-10years. Environmental friendly

sticker on outside of single battery sealed wrapper/bag:
-88007513, bar code 1208141901, made in china US [?]

6 batteries delivered in about 4 days to California by USPS from:
Ruiwen, return dept, 875 57St 1Fl, Brooklyn, NY, 11220.
mailed from zip 08902 10oz 1st class, commercial base price.
seller AM-CrazyCart

It would have been better for the batteries to be in a bubble envelope, but they seem to have survived with the little sealed air around them in each of their single pack bags.

-One battery's voltage was measured at 3.89 Vdc. Battery appearance is red/silver as shown, w/ a lengthwise slight wrinkle in the plastic covering. Negative end has "ultrafire" etched on it.

Hope to eventually update this after using a battery for a while in a laser pointer and flashlite. For now I will give 4 stars for getting here.
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7 of 7 people found the following review helpful By Spaceman on February 22, 2013
I have had years of professional experience in testing batteries, from aerospace to hearing aid batteries. I know how to test batteries & I have the equipment. I tested these based on the standard slow 20 hour discharge rate, not a high rate which makes the batteries look even worse.

This battery company is basically running something like a scam. I bought a total of 6. My tests show that on average, they don't even measure up to a 1/3 of the 3000 mAh level claimed by UltraFire.

Furthermore, they are only slightly more than the power level found in a triple pack of AAA batteries.

Therefore, buying these batteries makes no sense at all. Save yourself time & trouble & stay with lights that use the triple pack of AAA batteries.
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6 of 6 people found the following review helpful By T. Arroyo on December 20, 2012
Verified Purchase
This is a scam. These batteries don't even last as long as a 1600mah 18650. They are extremely light, charged extremely quick, and ran out of juice even quicker.
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5 of 5 people found the following review helpful By Matt on January 30, 2013
Verified Purchase
The batteries worked for about 3 weeks in the CREE flashlights and then all of a sudden they wouldn't put out full current and only dimly illuminate the flashlights. I've been thru about 6 of these batteries total now and finally have switched to a different brand of 18650 battery.
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3 of 3 people found the following review helpful By Jason L on December 15, 2012
Verified Purchase
For starters if you are still considering this battery there is no PCB (Protection Circuit Board), so take that into consideration with what you need it for.

Now I bought these for an electronic cigarette mod that I have been using for a while. I had previously been using Tenergy 2600mah batteries and figured a better capacity battery would be nice. The Tenergy batteries usually last me about 2.5 to 3 days of use. These Ultrafires barely last a full day. The performance has been very disappointing and I will be going back and ordering more Tenergy batteries for the foreseeable future.
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9 of 12 people found the following review helpful By Steve on May 22, 2012
I have several of these from Crazy-Cart, albeit I paid $2.99 per pair, and as I type this, they are priced at $1.59 per pair.

These claim to be protected cells. I'll have to take their word for it as I have yet to actually test to see.

I have been using them in single cell flashlights with no problem, but I have noted there seems to be quite a variance in how much energy each cell will store. So far, I have not noted any of my cells self-discharging. But for the price, as long as I get something serviceable, I am happy.

I would NOT recommend these for anything using multiple cells in series. These cells are a hot topic on some flashlight enthusiast forums with members posting reports of these being recycled cells with new wrappers. Even if this is the case, I am getting cells that work at a dollar store price. I have been using these with no problems. The label says 3000 mAh; I seriously doubt the rating. But then, I am not paying $10/cell either.
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