Ultrafire Li-ion 18650 3000mah Battery


Customer Rating :
Rating: 3.4

List Price : Price : $3.00
Ultrafire Li-ion 18650 3000mah Battery

Product Description

Protected 18650 3000mAh rechargeable 3.6 volt battery - charge with the Ultrafire Multi-Battery charger. The advantage of this cell is that it features a button top making it particularly compatible with many flashlight applications. Rechargeable Lithium batteries are rapidly becoming a very economical way to lower the operating costs of Lithium-Powered flashlights. We offer a number of different options in order to meet any rechargeable needs. These are Protected batteries. These fully protected cells simplify usage with their integrated PCB. Perfect for your single cell application these cells are not for pack building as doing so will defeat the PCB protection which is matched to the correct voltage on a single cell. If you are building a pack please choose one of our other cells and the appropriate PCB.


  • Unique and New! With integrated PCB Protection
  • Lithium Ion 18650 cylindrical rechargeable batteries
  • Unique PCB design and patent pending
  • Manufactured under ISO9001-2000 to assure quality
  • Lighting or other device needing 3.7V power


Ultrafire Li-ion 18650 3000mah Battery Reviews


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Customer Reviews
Average Customer Review
18 Reviews
5 star:
 (9)
4 star:
 (1)
3 star:
 (1)
2 star:
 (2)
1 star:
 (5)
 
 
 

42 of 44 people found the following review helpful
5.0 out of 5 stars Awesome 18650 protected cell, June 28, 2010
This review is from: Ultrafire Li-ion 18650 3000mah Battery (Electronics)
This is a very decent 18650 secondary cell (not a battery) with the Ultrafire brand. Not sure if the 3000mAh claim is true, but I can vouch for the fact that it lasts a bit longer than other cells I own (a few Trustfires, a few Ultrafires and a few Tenergys, rated between 2400mAh and 2600mAh).

The button top feature means that they will work well in spring-less flashlights (no need for a magnet-button).

The protected feature means they have a chip on board that protects it from over-charge and under-discharge. If over-charged (over 4.2V in layman's terms) the cell overheats and may explode (it's called "thermal runaway"). The explosion itself is a chemical rupture-explosion, a very nasty thing. If under-discharged (used under load until it drops under 2.75V, in laymen's terms), a chemical reaction makes the cell unstable, dangerous and unusable. The chip onboard should protect against this. If you are running a flashlight until it gets dim and hits the low... Read more
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13 of 14 people found the following review helpful
1.0 out of 5 stars Worst battery I tested., February 1, 2012
By 
This review is from: Ultrafire Li-ion 18650 3000mah Battery (Electronics)
As a reseller of high-end LED flashlights I also have to provide 18650 batteries and chargers. I've spent the last 2 months importing batteries and chargers and doing some "real world" testing. I used Balder BD-2 flashlights to test my 18650 batteries. I won't give you my full results as it would take up a lot of space, but here is a sampling of high end to low end:

EagleTac branded protected Panasonic 3100 mAh - 155 minute average on high. (Sat for 4 days before test.)

SZOBM Black label protected 2800 mAh - 112 minute average on high. (Sat for 2 weeks before test.)

SZOBM Black label protected 2400 mAh - 114 minute average on high. (Fresh Charge.)
SZOBM Black label protected 2400 mAh - 111 minute average on high. (Sat for 2 weeks before test.)

SZOBM Blue label unprotected 2400 mAh - 106 minute average on high. (Fresh Charge)
SZOBM Blue label unprotected 2400 mAh - 96 minute average on high. (Sat for 2 weeks before test.)... Read more
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9 of 12 people found the following review helpful
3.0 out of 5 stars Failed after 15 months, October 30, 2010
By 
J. Sams "deezlman" (Charlotte, NC USA) - See all my reviews
(REAL NAME)   
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This review is from: Ultrafire Li-ion 18650 3000mah Battery (Electronics)
I purchased a pair of these. The worked great while they worked and then, after 15 months, one of them wouldn't take a charge. I believe the built in overload circuit failed. The voltage on the good battery reads 4.2 after charging. The bad one reads 0, which I think would not be the case if there was a connection to the battery itself. I would not buy this brand again. For the price, it should last longer.
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