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  • 4Pcs 3.7V 18650 3000mah Rechargeable Batterys
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4Pcs 3.7V 18650 3000mah Rechargeable Batterys

by Unknown
| 15 answered questions

Price: $4.32 & FREE Shipping
In Stock.
Ships from and sold by TechCity Trading.
4 Batteries
  • 4Pcs 3.7V 18650 3000mah Rechargeable Batterys
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12 new from $0.10 1 used from $10.00

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Frequently Bought Together

4Pcs 3.7V 18650 3000mah Rechargeable Batterys + Outdoor Waterproof 1600LM CREE XM-L T6 LED Headlamp + TrustFire XML C8-T6 5-Mode CREE LED 1000 Lumen Flashlight (Generic Packaging)
Price for all three: $18.64

These items are shipped from and sold by different sellers.

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Product Information

Size Name: 4 Batteries
Technical Details
Part Number OEM
Item Weight5.6 ounces
Product Dimensions6 x 4 x 1 inches
OriginChina
Item model numberOEM
Size4 Batteries
ColorRed
Battery Cell TypeLithium Ion
  
Additional Information
ASINB00AQPZM7U
Best Sellers Rank #207 in Home Improvement (See top 100)
Shipping Weight5.6 ounces (View shipping rates and policies)
Date First AvailableDecember 20, 2012
  
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Product Description

Size Name: 4 Batteries

4Pcs 3.7V 18650 3000mah Rechargeable Batterys

Customer Questions & Answers

Customer Reviews

They hold a charge for a long time.
johnivanp
Two of the batteries didn't work the other two work but don't hold charge for the 10 hours or so my old ones did, more like 4 or 5.
Alison Wiswasser
These batteries work great for the Alldaymall® TrustFire Super Bright 3800 Lumens rechargeable flashlight.
Darin

Most Helpful Customer Reviews

134 of 142 people found the following review helpful By MGB on September 16, 2013
Size Name: 4 Batteries Verified Purchase
I purchased 2 sets of these (8 batteries total) knowing they were most likely not authentic as 90% of the 18650 batteries sold on Amazon are knock-offs. I have already talked to Amazon about this so we will see what happens.

The batteries I received from "Super Shop" were a mixed bag. Most of them tested at 1500mAh. I run them trough my Fluke 177 True RMS Multimeter, and a load that is a known 3000mAh load. Each battery is fully charged using a NITECORE IntelliCharger i4 before I test the batteries. I run 2 tests one immediately after charging, and one 24 hours after charging. I verify that there is no significant drop in capacity the day after.

Though most of the batteries were consistent around 1500mAh there was 1 battery with a capacity of 2600mAh, 1 at 2000mAh, and 1 more at 1800mAh. This wouldn't be such a big issue, but I plan to use them in a light that requires 3 batteries in a series. It's a bad idea to use batteries that vary in capacity in a series (or in parallel for that matter).

These batteries indicate that they have a protection circuit on the label, but they do not have any protection.

Overall these are an ok deal if your application only requires the use of 1 battery at a time. Since you can't be sure that you will receive consistent capacities; this makes them fairly useless for applications that require 2 or more batteries.

When I contacted the seller regarding the authenticity, and quality of these batteries; I was told basically that it is not his problem because Amazon mixes inventory. I find this to be a bit of a load of bull, and if it is true; it is very irresponsible of Amazon. I wouldn't trust a Chinese seller to provide authentic products, or even generic products of any consistent quality.
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74 of 82 people found the following review helpful By A. Leung on May 6, 2013
Size Name: 4 Batteries Verified Purchase
I purchased those four 18650 3000mAh batteries from Crazy Cart.

Pros:
. The price was inexpensive – $2.25 each including shipping cost.
. The batteries work.

Cons:
. Capacity is only around 1100mAh, much less than the stated capacity of 3000mAh. I checked the actual capacity by running a load test – drawing 1A from the individual batteries by connecting resisters to them, and measuring by means of a digital multimeter.

Other Considerations:
. The better (supposingly) 18650 batteries cost a few times more. Now I got around one-third of the stated capacity; sounds like breakeven in terms of relative cost-performance ratio, but I don't like such a big discrepancies in actual vs stated capacities.
. I have worse 18650 batteries – stated capacity 2700mAh; actual 500mAh.
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29 of 31 people found the following review helpful By Nick P on August 9, 2013
Size Name: 4 Batteries Verified Purchase
These batteries are cheap knockoffs that don't work. Of the 4 that I received, only three would actually charge and the fourth would discharge all of its capacity over the course of 3 minutes after fully charged (having it hooked up to my voltage meter I could literally watch the millivolts drop off). I stripped off the wrapper and found that there's also no protection circuit on these batteries despite the fact that the real UltraFires have them. Further, these batteries are physically smaller (by several millimeters), noticeably lighter, and have far less storage capacity than real UntraFire 3000mAh batteries. Actual capacity would be more in the 500mA range. Finally the pictures they included are of real UF batteries, and to see if yours are too, there's a few ways to find out. Easiest is to look at the ground terminal on the battery which should have 'UltraFire' stamped on it, beyond that, the positive terminal should have two small holes in it. If the batteries shipped to you do not (like mine) than they're knockoffs and you may be at risk by using them in your devices.
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14 of 15 people found the following review helpful By Ken on July 4, 2013
Size Name: 4 Batteries Verified Purchase
I am not pleased with these batteries. They last less than 2000mah batteries I have.
I am returning these.
Crazy Cart will not respond to my emails.

Do yourself a favor - DO NOT ORDER!
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27 of 32 people found the following review helpful By wickedbusa on June 30, 2013
Size Name: 4 Batteries Verified Purchase
These batteries are weak. They are rated at 3000mAh, but my genuine AW 1600mAh batteries outlast these pieces of junk by two days. I can tell the quality of these things are poor. My 1600mAh rated 18650's from AW weight a lot more than these. These things go from a full charge to dead without any warning.
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53 of 68 people found the following review helpful By Right To Bear Arms on April 1, 2013
Size Name: 4 Batteries Verified Purchase
04/01/13 I have been using these batteries in the Trustfire 3800 lumen and 1000 lumen flashlights in the field for Law Enforcement purposes for about one month now and I am extremely happy with how they perform. I have been asked several times by fellow Officers what kind of flashlight I'm using because it outshines their expensive lights. I typically charge my batteries once a week and keep a backup. I haven't used my backup batteries yet.
Before purchasing these batteries I contemplated buying the more expensive Panasonic or Samsung batteries and I'm glad I didn't because these batteries work just fine. I purchased this charger; (copy and paste) "Neewer Wall Li-on Charger for 18650 Rechargeable Battery USA" and have been very happy with how fast it charges and how inexpensive it was. It has a red light charging and green light ready feature that is perfect for knowing when the battery or batteries are fully charged. This charger is under eight bucks!
I don't understand why people are putting in such negative reviews on the these Ultra Fire batteries because they work great. What else is there to say...

I will post an update when these batteries no longer accept and hold a good charge.

☆UPDATE☆ I wrote the original review on April 1st, 2013 and it's now September 7th, 2014. These batteries and my cheap as hell charger are still kicking and I use them literally EVERY DAY! I bought more of these batteries for other electronics and to have plenty of spare charged batteries for camping and a 4 cell intelli charger (love that thing too!). I would and do buy these batteries again.
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Most Recent Customer Reviews


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