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Thread: if a torch accept only 0.7-4 volts

  1. #1

    Default if a torch accept only 0.7-4 volts

    how do i make it to accetp at least 8 volts

  2. #2
    *Flashaholic* StarHalo's Avatar
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    Default Re: if a torch accept only 0.7-4 volts

    Add another two emitters

  3. #3

    Default Re: if a torch accept only 0.7-4 volts

    Short answer: you don't.

    Long answer: it depends on the light. Most likely you'd have to swap out the driver.

  4. #4
    Flashaholic* Yoda4561's Avatar
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    Default Re: if a torch accept only 0.7-4 volts

    What they said, if you feel like experimenting just to see if you can do it though, try a voltage divider. http://en.wikipedia.org/wiki/Voltage_divider

  5. #5
    *Flashaholic* Marduke's Avatar
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    Default Re: if a torch accept only 0.7-4 volts

    The light is meant to be regulated on 1-2xAA, or 1xLi-Ion. To made it work for 2xLi-Ion, you would have to swap out the circuitry, and the light would most likely loose the ability to run on it's current cells.


    If you told us what light you are speaking of, we might be able to help more.

  6. #6

    Default Re: if a torch accept only 0.7-4 volts

    im thinking of moding a jetbeam http://www.jetbeam.com.cn/links/pro/jet3ibs.aspx
    to make it run on 2 cr123a

  7. #7
    *Flashaholic* Marduke's Avatar
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    Default Re: if a torch accept only 0.7-4 volts

    What's wrong with the 18650 cell it's designed for? You will get the same if not better performance with a safer setup.

  8. #8

    Default Re: if a torch accept only 0.7-4 volts

    my country hardl sell 18650 and you can guess the price of a 18650 if a cr123a price vary from 4 usd to 7usd hahah and furthermore cr123a is also very rare so what make it 18650 is as if non existence hahah

  9. #9

    Default Re: if a torch accept only 0.7-4 volts

    so flashlight expert can help me
    thanks

  10. #10
    *Flashaholic* Marduke's Avatar
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    Default Re: if a torch accept only 0.7-4 volts

    Quote Originally Posted by iluvflashlight View Post
    my country hardl sell 18650 and you can guess the price of a 18650 if a cr123a price vary from 4 usd to 7usd hahah and furthermore cr123a is also very rare so what make it 18650 is as if non existence hahah
    That's why you order online. It is very likely you could get a charger + 2 cells for less than 4 CR123 primaries bought locally.

    18650 cells are rechargeable and reusable. You don't throw them away every cycle.

  11. #11
    *Flashaholic* StarHalo's Avatar
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    Default Re: if a torch accept only 0.7-4 volts

    The single 18650 setup gives you far more runtime and a lot more safety over the 2x123 configuration. It'll save you money, too, since the 18650 is rechargeable and costs the same as some places charge for a single 123.

    If you've absolutely got to have 18650 AND 2x123 ability in a JetBeam, the current Military and III Ultra "Broad Voltage" models accept both.

  12. #12
    Flashaholic*
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    Default Re: if a torch accept only 0.7-4 volts

    I can't buy them in my country either - but the internet is your friend. Just go to the market place here and buy them from AW.
    List of lights removed to allow the search engine to work

  13. #13
    Flashaholic*
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    Default Re: if a torch accept only 0.7-4 volts

    Quote Originally Posted by nzgunnie View Post
    I can't buy them in my country either - but the internet is your friend. Just go to the market place here and buy them from AW.
    +1 on AW's products

    Don't give up just because you can't something locally

    I have the Olight M20 which is a fairly similar light except it can accept both 123's and 18650's. Even though the 123 setup is a little bit brighter on max, the 18650 will run the light a lot longer as you are comparing 2500mah at 3.7 volts or 9.25 watt/hrs against 750mah at 7.4 volts or 5.55 watt/hrs. I would take the additional runtime any day over the very minimal brightness increase

  14. #14

    Default Re: if a torch accept only 0.7-4 volts

    ok i will order online then

  15. #15
    Flashaholic*
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    Default Re: if a torch accept only 0.7-4 volts

    Quote Originally Posted by iluvflashlight View Post
    ok i will order online then
    lol... flashaholic answer right there

    Good luck and please let us know how it turns out :-)

  16. #16
    Flashaholic*
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    Default Re: if a torch accept only 0.7-4 volts

    Quote Originally Posted by iluvflashlight View Post
    ok i will order online then
    Buy from here:
    http://www.cpfmarketplace.com/mp/sho...d.php?t=187951
    So many lights, so little money (cause I spent it on lights). I'm not afraid of the dark, the dark is afraid of ME!

  17. #17
    *Flashaholic* mdocod's Avatar
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    Default Re: if a torch accept only 0.7-4 volts

    Don't forget a charger!
    -Eric

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