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Thread: Malkoff Surefire 16650 Problems Solved

  1. #1

    Default Malkoff Surefire 16650 Problems Solved

    The problem is VOLTAGE!!!

    I have an MD2 and 6P both equipped with an M61 drop in. I have a Z41 with McClicky and Centurion C2 clicky tail cap for the 6P. The MD2 of course has a Malkoff tail cap. Both lights with all three tail caps exhibit the same behavior. With a 16650 or 18650 there is mild flickering in momentary mode. Everything is steady while in constant on. When the batteries are low the flickering is more pronounced in momentary mode . With two CR123's or 16340's the flickering is absent.

    These drop in's like voltage!

  2. #2

    Default Re: Malkoff Surefire 16650 Problems Solved

    Good info.

    Thanks for this.
    John 3:16

  3. #3
    Modernflame's Avatar
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    Default Re: Malkoff Surefire 16650 Problems Solved

    The M61 has an input voltage range of 3.4 - 9v. Flickering is not normal within those specs. Did you try stretching the springs or cleaning the contacts?
    ďMay it be a light to you in dark places, when all other lights go out.Ē
    J.R.R. Tolkien, The Fellowship of the Ring

  4. #4
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    Default Re: Malkoff Surefire 16650 Problems Solved

    ... thread moved to Flashlight Electronics / Batteries ...

    Protected, or unprotected cells ?
    ... is the archimedes peak

  5. #5

    Default Re: Malkoff Surefire 16650 Problems Solved

    Protected

  6. #6

    Default Re: Malkoff Surefire 16650 Problems Solved

    It doesn't flicker at all with the cr123's (6.5 volts) or 16340's (8.4 Volts). Definitely not a contact issue.

  7. #7

    Default Re: Malkoff Surefire 16650 Problems Solved

    I also have a flicker, but I know that this is due to poor contact inside the button. Have you tried the unprotected 18650 and 16650? And please tell me the brand of your protected batteries.

  8. #8

    Default Re: Malkoff Surefire 16650 Problems Solved

    Havenít tried unprotected. Iíve used an Evva 3500mah protected 18650 69mmís. And a keeppower 2500mah protected 16650 68mmís. Two cr123ís equals 68.4mmís and two Fenix protected 16340ís equals 68.8mmís. All battery combinations are within 1mm so length Likely isnít a factor here.

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