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Thread: 3x18650

  1. #1

    Default 3x18650

    Can I fit 3 x 18650 Lithium in a tri bored Mag?
    Thanks.

  2. #2
    Flashaholic*
    Join Date
    Dec 2005
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    Belton Texas
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    Default Re: 3x18650

    I don't think this will be possible. I don't have any 18650s but I tried 3 CR123s which are 17mm diameter and they won't clear the tail threads. The distance beween the end of the cell and the outer edge of the Mag looks to be less than the additional 1mm needed. I'm not 100% sure since I don't have my calipers handy and just eyeballed it with a ruler.

  3. #3

    Default Re: 3x18650

    No.
    You can, however, fit three 17670's in a tri-bored Mag D. I have one. It is fivemega's 700L.

    Maybe if the inside diameter were bored out leaving the walls very thin but I would have to defer to others who may have tried this or know for sure.

  4. #4
    Flashaholic* Lunarmodule's Avatar
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    Jul 2005
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    North Shore Oahu, Hawaii
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    910

    Default Re: 3x18650

    The answer is ABSOLUTELY NOT. Even unprotected cells are about 1.2mm larger in a triple group than the OUTSIDE diameter of the Mag tube, its utterly frustrating. If the Mag tube were 5mm larger so many more choices would work. The only light that can do 3x 18650 is Fivemega's big body 6AA light that I pray will return to production someday. Fivemegas holders hold 3 18650 , but the light can actually fit FOUR 18650 across for NINE point SIX amp hours of battery (9600mAh). Ever hear of a three hour Mag 1185? For a tribore Mag, 3 17670 cells are the way to fly. Newest gen ones are 1500mAh, so three across is 4.5AH in parallel, or for series applications 1.5AH with 11.1V. Also consider stacks of 17500 cells for more voltage.
    LIGHT TRAVELS AT 186282.397 MILES PER SECOND... ANY FASTER WOULD BE DANGEROUS

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