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Thread: Surefire 6p/KT1 2x R123 & NM21 (M6 HOLA)

  1. #1
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    Default Surefire 6p/KT1 2x R123 & NM21 (M6 HOLA)

    Surefire 6p/KT1 2x R123 & NM21 (M6 HOLA)

    forget mini-HID's... check out this mini-HOLA setup!
    possibly the smallest 500 lumen light around...

    current draw is 4.28 amps for this setup..

    edit: my mistake in posting this unsafe use of bare li-ion in series. protected cells will not sustain current needed to run Hola.




  2. #2

    Default Re: Surefire 6p/KT1 2x R123 & NM21 (M6 HOLA)

    Now that I like. I'm been using two protected R123's in my 6P with the P90 bulb. How are you able to light it? My setup won't light up the P91 bulb.

  3. #3
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    Default Re: Surefire 6p/KT1 2x R123 & NM21 (M6 HOLA)

    current draw is too large for protected cells...
    will only work with bare cells...

    be carefully using bare cells in series. I don't go pass 2x

  4. #4

    Default Re: Surefire 6p/KT1 2x R123 & NM21 (M6 HOLA)

    Is the runtime longer than 10 minutes?

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    Default Re: Surefire 6p/KT1 2x R123 & NM21 (M6 HOLA)

    have not done runtime test... not really a runtime guy. no patience....

    I've got another 6P body bored out to 18.25mm. once I add an 123 extension. should be able to use 2x 150A for longer runtime.

    2x 18650 would make it into M4 length. kinda of defeating purpose of a small powerful light.

  6. #6
    Enlightened
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    Default Re: Surefire 6p/KT1 2x R123 & NM21 (M6 HOLA)

    That´s over 6C!
    Definitely only for *very* short bursts, I´d guess about 5 min runtime at this rate of discharge.
    ...but interesting that those cells can actually light up the HOLA!
    and nowadays R123´s are quite cheap

  7. #7
    *Flashaholic* KevinL's Avatar
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    Default Re: Surefire 6p/KT1 2x R123 & NM21 (M6 HOLA)

    Wasn't cy the one who always preached lithium ion safety to us?

    6C is way beyond the absolute max 3C limit. I wouldn't do it.
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    Default Re: Surefire 6p/KT1 2x R123 & NM21 (M6 HOLA)

    Beamshots? That looks pretty cool assuming you still have all your fingers after using it.
    Dean Venture: "I'll get the flashlights!"
    Hank Venture: "And I'll get the astronaut Ice Cream!"

  9. #9

    Default Re: Surefire 6p/KT1 2x R123 & NM21 (M6 HOLA)

    Quote Originally Posted by Sanny
    That´s over 6C!
    Doubt it. The voltage sag has to be enormous so the current draw would drop accordingly.


    Now if you get a Dewalt 36V battery pack and tear it up (like I've been considering), then you might be able to do this safely

  10. #10
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    Default Re: Surefire 6p/KT1 2x R123 & NM21 (M6 HOLA)

    Guilty as charged

    OK, bad post .... don't do this.

    Quote Originally Posted by KevinL
    Wasn't cy the one who always preached lithium ion safety to us?

    6C is way beyond the absolute max 3C limit. I wouldn't do it.

  11. #11
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    Default Re: Surefire 6p/KT1 2x R123 & NM21 (M6 HOLA)

    Assuming I have signed off on the "DON'T DO THIS" disclaimer....

    What about the M6 LOLA? Protected cells cutting the mustard or still no?
    Dean Venture: "I'll get the flashlights!"
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  12. #12
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    Default Re: Surefire 6p/KT1 2x R123 & NM21 (M6 HOLA)

    All turbohead LAs have the same dimensions? I never knew that..
    That is crazier than when I did 2 R123s backing a P91 in a E2E with E2C

  13. #13

  14. #14

    Default Re: Surefire 6p/KT1 2x R123 & NM21 (M6 HOLA)

    So you are underdriving it a bit. Just wait til we all have 123 size cells that can deliver the goods though!

  15. #15
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    Default Re: Surefire 6p/KT1 2x R123 & NM21 (M6 HOLA)

    Wait, it fits physically?

  16. #16
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    Default Re: Surefire 6p/KT1 2x R123 & NM21 (M6 HOLA)

    Quote Originally Posted by cy
    Guilty as charged

    OK, bad post .... don't do this.


    I recall something about another flashaholic who tried this stunt for short bursts and got away with it. Its only role was as a strobe, to deliver a couple of blinding flashes of light, then it would be backed up with a longer-running SF incan for normal use.
    Celebrating the ROP.. 5 years of history

  17. #17
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    Default Re: Surefire 6p/KT1 2x R123 & NM21 (M6 HOLA)

    had a stupid attack when I first posted this

    but I'm glad I did now... this is evoving into an experiement in how hot li-ion cells gets after short runs. I'll be using in IF thermometer to monitor heat buildup at different time intervals.

    this procedure should be totally safe as I'm monitoring heat buildup. removing cells, long before thermo run-away can occur.


  18. #18
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    Default Re: Surefire 6p/KT1 2x R123 & NM21 (M6 HOLA)

    I run mine on 2 Panasonic 17670s in a 9P+A19. Nice!
    Regards,

    Brian

  19. #19
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    Au Re: Surefire 6p/KT1 2x R123 & NM21 (M6 HOLA)

    Regards,

    Brian

  20. #20
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    Default Re: Surefire 6p/KT1 2x R123 & NM21 (M6 HOLA)

    Keep ya goggles on, CY!
    How much current flows through your bulb?

  21. #21
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    Default Re: Surefire 6p/KT1 2x R123 & NM21 (M6 HOLA)

    OK, this little experiement is headed a different direction.

    body has been bored out to accept 18650 and a tower module running a five watt is planned.

    simply is not enough capacity in 2x R123 to run HOLA for very long. but 1x 18650 config will run a Wbin for a long time with excellent throw/flux.

  22. #22

    Default Re: Surefire 6p/KT1 2x R123 & NM21 (M6 HOLA)

    Quote Originally Posted by cy
    current draw is 4.28amps for 2x R123 and M6 HOLA lamp

    How long did you run this and how hot did they get?

  23. #23
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    Default Re: Surefire 6p/KT1 2x R123 & NM21 (M6 HOLA)

    Quote Originally Posted by Luna
    How long did you run this and how hot did they get?
    under 5 minutes runtime, temp of cells got up to 88 degree F
    not a real pratical setup... with a five watt tower and 18650, this little setup should produce some serious throw!

  24. #24

    Default Re: Surefire 6p/KT1 2x R123 & NM21 (M6 HOLA)

    Quote Originally Posted by cy
    under 5 minutes runtime, temp of cells got up to 88 degree F
    not a real pratical setup... with a five watt tower and 18650, this little setup should produce some serious throw!

    Still,< 5mins and only 88*!

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