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Thread: Question about 17500 batteries

  1. #1
    Flashaholic
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    Default Question about 17500 batteries

    Are AW 1100 mAh the best 17500's? Is 1100 mAh the highest capacity?

  2. #2
    Flashaholic chewy78's Avatar
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    Default Re: Question about 17500 batteries

    i think they probably are one of the better brands.

  3. #3
    Flashaholic JohnnyBravo's Avatar
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    Default Re: Question about 17500 batteries

    Good to hear. I'm about to order some up. I don't care for the battery rattle in my 1996 SF 9P w/ 16340s. I have an XML U2 drop in rated from 3 to 18 volts in it now, and think I will run two 17500s instead of the three 16340s. I figure the overall length to be about the same, and with the 1mm bigger diameter, perhaps the rattle will quiet down?
    Quote Originally Posted by chewy78 View Post
    i think they probably are one of the better brands.
    Better to have it and not need it than to need it and not have it.

  4. #4
    Flashaholic*
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    Default Re: Question about 17500 batteries

    three Li-Ion 16340 house - a bit - more energy, than two of such 17500s.
    --> no real gain
    (except for being able to recharge "one set" at once, with a typical mulitformat doublecell charger)


    changing to a 1*18650 host would give You more power + a smaller light,
    keep the 9P as a spare ...

  5. #5
    Flashaholic* srfreddy's Avatar
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    Er... 16340s have 650 mah, I think, and 650x3 = 1950, 1100x2 = 2200. The 17500s definitely have more capacity.

  6. #6
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    Default Re: Question about 17500 batteries

    + with voltage being closer to Vf of LED, efficiency of driver will be higher too (with just 2 cells), so there are some more "virtual mAh" gained.

  7. #7
    Flashaholic JohnnyBravo's Avatar
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    Default Re: Question about 17500 batteries

    I'm using three AW IMR 16340s, at 550mah each. But I do like the idea of charging batteries in pairs and/or even numbers...
    Quote Originally Posted by yellow View Post
    three Li-Ion 16340 house - a bit - more energy, than two of such 17500s.
    --> no real gain
    (except for being able to recharge "one set" at once, with a typical mulitformat doublecell charger)


    changing to a 1*18650 host would give You more power + a smaller light,
    keep the 9P as a spare ...
    Better to have it and not need it than to need it and not have it.

  8. #8
    Flashaholic
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    Default Re: Question about 17500 batteries

    You can't add battery capacity like that.

    3 x 16340 = 11.1V x 550mah which gives 6.1 Watt hours

    2 x 17500 = 7.4V x 1100mah which gives 8.1 Watt hours

    More capacity from the 17500's.

    Cheers,
    Nova

  9. #9
    Flashaholic* ChrisGarrett's Avatar
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    Default Re: Question about 17500 batteries

    Quote Originally Posted by ^^Nova^^ View Post
    You can't add battery capacity like that.

    3 x 16340 = 11.1V x 550mah which gives 6.1 Watt hours

    2 x 17500 = 7.4V x 1100mah which gives 8.1 Watt hours

    More capacity from the 17500's.

    Cheers,
    Nova
    The newer AW 16340 Li-Cos are up to ~750mAh, so it's probably a wash.

    However, using 2x17500s means one less sell that you have to worry about keeping balanced with the other(s).

    Chris
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  10. #10

    Default Re: Question about 17500 batteries

    You can always trust AW to provide the power you need. I've tried all the ****Fire batteries and.... prefer the AW. They cost more, but they give more. 2 X 17500 is a useful combination.

  11. #11

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    Quote Originally Posted by ChrisGarrett View Post
    The newer AW 16340 Li-Cos are up to ~750mAh, so it's probably a wash.
    RCR123s have always been listed at 750 (or 900 for some brands) but nearly always test at or under 600.

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