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Doesn't fit Ultrafire Wf-139 charger

  • MyTMouse Thursday, December 31, 2009 8:13 PM Reply
    Don't know if I just have bad luck but my 4 new batteries along with Ultrafire WF-139 charger (SKU 1251) don't fit together. I CAN get the batteries in the charger but it involves cramming them in so hard it dislodges the cap of the cells and almost damages them...seriously, I have to re-position the top of the cells after using that charger.

    Cells are too big...they are a few mm longer than they should be. I'm not impressed.
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  • cyclist Moderator Friday, January 1, 2010 9:26 AM Reply
    That can be a problem with protected cells, some chargers/lights prefer them, some dont.
    The protection circuit adds a few mm to the overall length compared to non-protected.
    If you want, you can just remove the protection circuit from the bottom, its not hard to do.
    It is connected by a thin wire going up the outside of the cell.
    You need to strip the wire out too, and you'll need to tape the blue protective cover back on with tape.
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  • MyTMouse Friday, January 1, 2010 12:03 PM Reply
    I'd almost rather mod the charger so they fit...

    When you think about it though, why should I have to mod anything? Either the charger wasn't designed very well, batteries are too long, or both
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  • jakim Friday, January 15, 2010 4:19 PM Reply
    It fits my charger very well and normally.
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  • dimulius Sunday, January 31, 2010 3:03 AM Reply
    Nop. It is the changed design of those batteries compared to older series. Check my post.

    Old ones were fitting into wf-139. New ones jumps out from it (they are both wider and longer).
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  • lordmage Thursday, March 25, 2010 10:28 AM Reply
    i am having the same issue with my UTF -18650. however the tenergy one. i got from some where else which has a PCB does not have the Top like these do.
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  • reitzneo Sunday, July 24, 2011 9:21 PM Reply
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