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Thread: Can a discharged battery serve well as a spacer?

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  1. #1
    Flashaholic* xevious's Avatar
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    Default Can a discharged battery serve well as a spacer?

    In the case where you install an emitter that can't handle the full battery load, can you use one discharged battery as a spacer? Or does this introduce possible leakage issues? Are there full battery sized spacers available in the market or do you have to fashion your own?
    Lights in my rotation: Zebralight SC52w | Olight S1/S15/i3E-CU/S35 | Nitecore EA4 | Surefire U2 | Sunwayman V11R | NovaTac 120P| Febux L0D

  2. #2

    Default Re: Can a discharged battery serve well as a spacer?

    I'm no expert but one should be along shortly. In the mean time you should not use a dead battery as a spacer, this is especially so with Lithiums.

    The risk is of reverse charge, which, with lithiums could cause thermal runaway and a nasty fire or explosion (rapid disassembly as the battery makers call it).
    Last edited by Hodsta; 01-03-2008 at 12:05 PM.
    Favs: TiPD-S's, Spy 007s

  3. #3
    Flashaholic* London Lad's Avatar
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    Default Re: Can a discharged battery serve well as a spacer?

    Hodsta is right


  4. #4
    *Flashaholic* Marduke's Avatar
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    Default Re: Can a discharged battery serve well as a spacer?

    Never, NEVER use a dead battery as a spacer.

  5. #5
    Flashaholic* eebowler's Avatar
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    Default Re: Can a discharged battery serve well as a spacer?

    The internal resistance of a dead cell is high. (Big resistor)

    Dead cells are prone to leaking. (Bye, bye flashlight )

  6. #6
    Flashaholic* xevious's Avatar
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    Default Re: Can a discharged battery serve well as a spacer?

    Quote Originally Posted by eebowler View Post
    The internal resistance of a dead cell is high. (Big resistor)

    Dead cells are prone to leaking. (Bye, bye flashlight )
    That's what my suspicion was, but I thought I'd check anyway.

    So, if I want to operate a 3 cell flashlight with just 2 cells (there is regulation circuitry so I'll get a usable beam), is there some kind of market available spacer I can use? Do they exist for cells like C, D, CR123, etc.? Has anyone here created their own and have a posting about it? I haven't been able to find anything yet...
    Lights in my rotation: Zebralight SC52w | Olight S1/S15/i3E-CU/S35 | Nitecore EA4 | Surefire U2 | Sunwayman V11R | NovaTac 120P| Febux L0D

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