DX  » Community » Reviews » UltraFire WF-139 3.7V 14500/17500/18500/17670/18650 Battery Charger (AC 100~220V/DC 12V)
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  • 5 Star:676 (67%)
  • 4 Star:222 (22%)
  • 3 Star:111 (11%)
  • 2 Star:00 (0%)
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    • Overall Rating: 5
    • Price: 5
    • Quality: 5
    • Ease Of Use: 5
    • Usefulness: 5
    2 DXPoints
    earned for this post
    Just Awesome.

    posted by McRicco on 12/23/2012 Certified Owner

    Involvement:General (knows how to use it) - Ownership:1 day to 1 week

    Pros:
    Works great, used plenty of times...best for its price
    Cons:
    Cable not included to 220V, but I had some cables in home. The charger is 5mA only ... takes a bit long time to charge.
    View Detail » 
    • Overall Rating: 5
    • Price: 5
    • Quality: 5
    • Ease Of Use: 5
    • Usefulness: 5
    2 DXPoints
    earned for this post
    Works well, must have

    posted by ALastorZ on 12/23/2012 Certified Owner

    Involvement:Expert (understands the inner workings) - Ownership:1 day to 1 week

    Pros:
    well built looks okay for gift - labels and other exterior elements looks well not wery bright informative LEDs absolutely silent (no ultrasound of invertor) 12 v car plug in a box works well
    Cons:
    Not a con, but there is no 220v cable in a box No voltage on side clems, but need it only for 18650 type and haven't tested wit...
    View Detail » 
    • Overall Rating: 5
    • Price: 5
    • Quality: 5
    • Ease Of Use: 5
    • Usefulness: 5
    2 DXPoints
    earned for this post
    Best Charger!

    posted by DamjanZ on 08/14/2012 Certified Owner

    Involvement:Expert (understands the inner workings) - Ownership:more than 1 month

    Pros:
    Two types of input, AC 220-240V or DC 12V. Can charge different types of lithium batteries. Independent charging lines, so you can charge only one battery independently.
    Cons:
    It doesn't include the AC 220-240V cable. Side contacts to charge the 16340/CR123A batteries are not soldered, so you need to r...
    View Detail » 
    • Overall Rating: 4
    • Price: 5
    • Quality: 2
    • Ease Of Use: 5
    • Usefulness: 4
    2 DXPoints
    earned for this post
    Nice universal charger

    posted by killogramm on 03/12/2011 Certified Owner

    Involvement:Expert (understands the inner workings) - Ownership:more than 1 month

    Pros:
    Can charge various types of lithium batteries. There are two inputs 12V DC and 100-240V AC. Independent charging lines. You can charge one battery or two at same time.
    Cons:
    Side contacts for charging 16340 not work. So, you need to solder them manualy. Poor solder quality at all. PCB is dirty. Ther...
    View Detail » 
    • Overall Rating: 5
    • Price: 5
    • Quality: 4
    • Ease Of Use: 5
    • Usefulness: 5
    2 DXPoints
    earned for this post
    Good charger.universal. with car adapter

    posted by darkfad on 10/16/2010 Certified Owner

    Involvement:Expert (understands the inner workings) - Ownership:1 week to 1 month

    Pros:
    Good charger with the ability to charge multiple battery types. Shows the charge or have charged. I support all the types of Lithium batteries (14500, 16340, 18650). With others, not yet tried it.
    Cons:
    From the packaging does not work side Clem. Solved rather simply. You can make a conductive paste. You can open and solder 4 wi...
    View Detail » 
    • Overall Rating: 5
    • Price: 4
    • Quality: 4
    • Ease Of Use: 5
    • Usefulness: 5
    2 DXPoints
    earned for this post
    best LiIon car charger on DX

    posted by venuz on 05/04/2010 Certified Owner

    Involvement:Expert (understands the inner workings) - Ownership:1 day to 1 week

    Pros:
    universal charger, gives you a possibility to charge wide range of LiIon cells and can be used in car or with AC mains. gives 5.3V on open circuit. - low charging current, gives me 360mA, so it is ok to use it with 10440; - no trickle charge; - cut-off a...
    Cons:
    - doesn't fit trustfire protected 18650 (neither blue nor black, they are up to 68mm max), need to disassemble and modify body ...
    View Detail » 
    • Overall Rating: 3
    • Price: 3
    • Quality: 3
    • Ease Of Use: 3
    • Usefulness: 3
    2 DXPoints
    earned for this post
    Nicely build charger support a lot of battery type

    posted by zawbie on 03/18/2010 Certified Owner

    Involvement:Expert (understands the inner workings) - Ownership:less than 1 day

    Pros:
    Easy plug and play charger, light turns green after being charged.
    Cons:
    Take a long time to charge high capacity batteries. The charges at 5mA only which can take a long time to charge.
    View Detail » 
    • Overall Rating: 4
    • Price: 5
    • Quality: 3
    • Ease Of Use: 3
    • Usefulness: 5
    2 DXPoints
    earned for this post
    nice but needs some modding

    posted by phoenix922 on 10/02/2009 Certified Owner

    Involvement:Expert (understands the inner workings) - Ownership:1 week to 1 month

    Pros:
    Very handy lil charger came with a 12v dc car adapter, didnt come with ac cord but its just a figure 8 so no big deal, the 2 side connectors aren't connected and folded in so needs modding to the board so u can charge CR123A batteries, or just use a spacer ...
    Cons:
    no ac adapter, not all connectors work and needs modding to use it to its full potential (didn't mind was kinda fun to do this)
    View Detail » 
    • Overall Rating: 5
    • Price: 4
    • Quality: 5
    • Ease Of Use: 5
    • Usefulness: 4
    2 DXPoints
    earned for this post
    very convenient Universal Charging

    posted by directman on 07/26/2009 Certified Owner

    Involvement:Novice (still getting used to it) - Ownership:1 week to 1 month

    Pros:
    11) you can charge two battery and one by one 2) shows the LEDs is charging or not, if zyaryadka finished a light green, charging LED is still flashing signals - red / green 3) You can charge the lithium-ion akumulyatory as a constant and on the AC 4) charg...
    Cons:
    Disadvantages: absent the power cord to the AC
    View Detail » 
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