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Thread: AAA to AA adapter

  1. #1

    Default AAA to AA adapter

    Can anyone recommend a good AAA to AA adapter? Thanks!

  2. #2
    Flashaholic
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    Default Re: AAA to AA adapter


  3. #3

    Default Re: AAA to AA adapter

    Aluminum foil balls are my current adapters lol. Was looking for something a little more quality, and that will allow me to still use the clicky.
    Quote Originally Posted by tokaji View Post

  4. #4
    Flashaholic
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    Default Re: AAA to AA adapter

    LoL! I hope the picture I linked is not yours!

  5. #5
    Flashaholic*
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    Default Re: AAA to AA adapter

    Quote Originally Posted by tokaji View Post
    Below is the linked photo.



    Worth emphasis for readers new to Li-ions. Don't do something like the above with Li-ion cells because they are constructed differently than other common consumer cells. Namely, the entire can is negative, so if the wrapper is torn near the (positive) top, then it can easily be shorted by a small metallic object - such as the above tin foil balls. This is likely the cause of various vaper "pants on fire" incidents, where keys, coins, etc have shorted naked cells carried in pockets.
    Last edited by Gauss163; 09-16-2018 at 09:44 AM.

  6. #6
    Flashaholic*
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    Default Re: AAA to AA adapter

    Is there something wrong with just using AA cells?

  7. #7

    Default Re: AAA to AA adapter

    Ha, no I don't use foil in my chargers, but will sometimes used a depleted AAA to run my AA lights. Lately I've found that a fairly depleted alkaline will give a nice 4 lumen or so output from my M31W. Great for late night when I don't full output from that dropin.
    Quote Originally Posted by tokaji View Post
    LoL! I hope the picture I linked is not yours!

  8. #8
    Honorary Aussie
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    Default Re: AAA to AA adapter

    I’ve seen several photos of these brass spacers in different sizes here over the years. I’m sure they’re available somewhere.

    I’ll see if I can find mine and post a photo.
    It is better to buy a beautiful, expensive, custom flashlight than to curse the darkness.

  9. #9
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    Default Re: AAA to AA adapter

    Times are so bizarre nowadays that the aluminum foil may be more expensive than the cheap generic AAA-to-AA adapters (< 20c in qty, e.g. $2.23 for 12 on eBay). But the recent tariffs on Chinese imports are causing steep increases on Al foil prices. Will all hell break loose when our fellow Americans can no longer afford tin foil hats?
    Last edited by Gauss163; 09-16-2018 at 12:45 PM.

  10. #10

    Default Re: AAA to AA adapter

    Neodium magnets. Get the discs and stack them to suit.
    I got nothing else to say...

  11. #11
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    Default Re: AAA to AA adapter

    Quote Originally Posted by adnj View Post
    Neodium magnets. Get the discs and stack them to suit.
    Great idea. I forgot to mention that.

    I bought several sizes on eBay and they work great.
    It is better to buy a beautiful, expensive, custom flashlight than to curse the darkness.

  12. #12
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    archimedes's Avatar
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    Default Re: AAA to AA adapter

    As others have mentioned, several of the above techniques do increase risks of short circuits, which can range from an inconvenience to a catastrophe.
    ... is the archimedes peak

  13. #13
    *Flashaholic* ChrisGarrett's Avatar
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    Default Re: AAA to AA adapter

    Quote Originally Posted by archimedes View Post
    As others have mentioned, several of the above techniques do increase risks of short circuits, which can range from an inconvenience to a catastrophe.
    Yeah, that picture above looks like something off the 'Redneck Inventions' website.

    Maybe solid copper stock, cut to fit, would be better, or even some pre-1982 US pennies?

    Chris
    Convoy: S2, S2+, M1, M2, Fenix: P1D, PD32, HL30, ET: D25C Ti, SF: 6P, ZL: SC-600, Klarus: P2A, Jetbeam: BA-20, Icon: Rogue 1, L3: L10, Xeno: E03, ShiningBeam: I-Mini, Olight: i3s, SWM: D40A, M11R, V11R, Maglite: 6Ds, MMs, Solitaires, LaCrosse BC-700, Maha C-9000, XTAR VP2, MP1S, XP1, MC1+, WP2 II, NiteCore i4, v2.

  14. #14

    Default Re: AAA to AA adapter

    Quote Originally Posted by ChrisGarrett View Post
    Yeah, that picture above looks like something off the 'Redneck Inventions' ...
    "Redneck" is still quite a derogatory term
    I got nothing else to say...

  15. #15
    *Flashaholic* ChrisGarrett's Avatar
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    Default Re: AAA to AA adapter

    Quote Originally Posted by adnj View Post
    "Redneck" is still quite a derogatory term
    Only to special snowflakes.

    Rednecks wear the title as a badge of honor.

    Chris
    Convoy: S2, S2+, M1, M2, Fenix: P1D, PD32, HL30, ET: D25C Ti, SF: 6P, ZL: SC-600, Klarus: P2A, Jetbeam: BA-20, Icon: Rogue 1, L3: L10, Xeno: E03, ShiningBeam: I-Mini, Olight: i3s, SWM: D40A, M11R, V11R, Maglite: 6Ds, MMs, Solitaires, LaCrosse BC-700, Maha C-9000, XTAR VP2, MP1S, XP1, MC1+, WP2 II, NiteCore i4, v2.

  16. #16
    Flashaholic* Crazyeddiethefirst's Avatar
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    Default Re: AAA to AA adapter

    I second the purchase of the inexpensive adapters. I bought several at around $0.50 each that are clear plastic that enclose the entire AAA cell with the bottom open for direct contact at the negative base and a brass button top for conduction at the positive terminal. There is no chance for a short, they work with flat tops, button tops, Eneloops, Lithium, etc and they fit tight enough there is no rattle(when traveling I usually have multiple battery carriers and almost always bring the adapters as an emergency backup). I wrote that response thinking about how I use the adapters in AA lights as a backup, but they work excellent in chargers as well. If you find yourself in an emergency needing to recharge AAA’s in a AA charger, I reccomend only using the foil on the negative end and wrapping a dollar bill or thick paper around the cell and foil to further protect against shorts...oh yeah, redneck and proud of it!

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