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Ultrafire WF-139 Lithium Ion Battery Charger

Ultrafire WF-139 Lithium Ion Battery Charger for 14500, 17500, 17670, 18500, and 18650 Batteries
Product Review:
Regular Price:$24.95
Our Price:$16.95
1 - 9$16.95 ea.
10+$15.95 ea.
Lithium Ion battery charger with two independent charging channels and adjustable compartments. You can now safely charge two batteries of unequal discharge state or capacity at the same time as this independently monitors and controls the charge for each battery compartment.

  • Compatible with 14500, 17500, 17670, 18500, and 18650 batteries
  • Input: 100/240 VAC;
  • Optional 12vdc car adapter (cigarette lighter adapter)
  • Output: 4.2v with variable current up to 550mA per channel
  • The power output of this charger is incorrect for the protected 3V 750 & 900mah RCR123A cells that we carry. We specifically do not recommend using this charger for those cells. Only use this charger with 3.6 & 3.7V cells.
  • Spacers can be used to charge 3.6V & 3.7V CR16340 cells, the terminals in the sides of the unit are not connected internally.

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More Information:

The Ultrafire WF-139 is a lithium Ion battery charger that features two independently charging channels and two adjustable charging bays. With this charger, you can now have an 18650 Li-Ion battery and charger that can safely charge unequal battery discharge states or capacities in two different battery compartments. The Li Ion battery charger features a 100/240 VAC and has an optional 12vdc car adapter. Applicable for 3.6 and 3.7v battery cells, the output of the Ultrafire WF-139 is 4.2v with a variable current up to 550mA per channel.

Ultrafire WF-139 Lithium Ion Battery Charger for 14500, 17500, 17670, 18500, and 18650 Batteries
4.5 Stars based on 4 Review(s)
Toney, AL
4 Stars
I would recommend this item to a friend.

Nice simple charger
August 7, 2014
Nice, simple to use charger. Works well and charges quickly. Good quality materials and seems very durable. Only reason I gave it 4 stars is because the 12vdc car power cord must be purchased separately.
Inexpensive, good quality.
Does not include 12vdc power cord.

4 Stars

Great compact charger
December 24, 2011
I originally bought this charger for use with Ultrafire\'s 16340 protected batteries + CR123 dummy cells per the earlier review. Be warned: the *protected* Ultrafire 16340 batteries DO NOT FIT. I returned them for some 3000mAh Ultrafire 18650\'s which work great. Also, the car charger is not included so if you didn\'t notice that in the description be sure to order it separately if you need it.

Don Brown
5 Stars

Great LiON charger
July 24, 2010
I have had one of these chargers for about a year and I am very happy with it. It charges all of the LiON batteries I use in my flashlights. If you get two of the dummy cells it will charge the RCR123 size batteries also. Just insert a dummy cell in series with the RCR123 in each circuit. I use this charger with 18650, 18500, 17670 and 16340/RCR123 LiON batteries. This charger is powered from the line and does not have a wall wart to lose. It is simple to use and just works.

Andy Whitaker
5 Stars

Great Charger
July 7, 2009
I got this charger today as the combo deal (with protected 18650 cells) and it feels/looks like a very expensive charger. The 18650 feels secure within the sliding bay, and all connectors (I got the car adapter also) fit snug with hardly no play at all. Overall 10/10.

Ultrafire WF-139 Car Charger Adapter
Regular price: $7.95
Sale price: $4.50
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