Where to buy old-style carbon-zinc batteries?

Discussion in 'Electric Horology' started by Chris, Aug 18, 2011.

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  1. Chris

    Chris Registered User
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    Nov 4, 2001
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    Anyone have a source for the old style carbon-zinc batteries? I need a C-size for a Schatz Queen Ann. Thanks!
     
  2. Mike Phelan

    Mike Phelan Registered User

    Dec 17, 2003
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    Don't know about USA, but they are freely available here - have you Googled?
     
  3. eskmill

    eskmill Registered User
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    Instead of using a zinc-carbon "C" size flashlight cell in your Queen Ann Schatz clock, I would suggest substituting an alkaline "AA" size cell. It is the same length but would require a sleeve of wood, plastic or paper so as to be retained by the larger holder clips.

    The AA alkaline cell weighs about one ounce and would require a little slug of solder or other material to equal the mass of the "C" size zinc-carbon cell.

    I think if you search for an equivalent Ampere-Hour or Watt-Hour dry cell chart, you will likely find the AA alkaline cell has a significant amount of power for the clock and resists leakage when depleted.
     
  4. Wynen

    Wynen Registered User

    Jan 21, 2009
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    You can buy AA-Cell to D-Cell Adapters/Converters even at Amazon.com (not a cheap but elegant solution).

    Regards from Germany, where you can buy D-Cells at the store just around the corner:)
    Hartmut
     
  5. Mike Phelan

    Mike Phelan Registered User

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    Wasn't it a "C", not a "D", that the OP required?
     
  6. Wynen

    Wynen Registered User

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    Ok, Mike. C-Cell. But you can get AA to C-Cell Adapters as well because these cells have almost the same height.
     
  7. bangster

    bangster Moderator
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    Look here.

    bangster
     
  8. Tinker Dwight

    Tinker Dwight Registered User

    Oct 11, 2010
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    Hi Bang
    These may not work. I think he needs the older C-Zn cells
    that don't have the protective cases. The ones that the
    zinc was the outside shell and had paper covers.
    Most newer cells have added weight to protect from leakage.
    Tinker Dwight
     
  9. bangster

    bangster Moderator
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    Try Googling "Carbon-Zinc Batteries" and see what comes up. Maybe something better'n my suggestion.

    :confused:;)
     
  10. gvasale

    gvasale Registered User
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    Chris: places like CVS & Walgreens should also sell plain batteries if I'm not mistaken. Look for the packages that don't say "alkaline." Since we can't buy mercury batteries any more, and they sure don't make AAA, AA, C & D in the composition of the small button batteries, if its not rechargable, or alkaline it has to be carbon-zinc.
     
  11. Tinker Dwight

    Tinker Dwight Registered User

    Oct 11, 2010
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    Hi
    You missed my point. It is not just C-Zn. It must also
    have the right weight. Newer C-Zn cells are wrapped
    in a metal protective layer. The cells originally used
    only had a thin cardboard layer covering the zinc
    electrode. Newer cells will be heavier.
    Tinker Dwight
     
  12. gvasale

    gvasale Registered User
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    Hi Tinker: While I'm not quite as old as dirt yet, I never have seen a carbon zinc battery that came without a metal shell in AA, C or D size. Just recently I opened an old flashlight found in my mothers home that had Everready(Sp) batterys which had deteriorated and they had the "Nine LIves" slogan and a metal shell. Sorry for the confusion.
     
  13. Wynen

    Wynen Registered User

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    Hello Tinker,
    so what's about my suggestion to use "C-sized Adapter Shells for AA Battery" (this is a product name at amazon.com)? You can add some metal parts until the weight fits. AA cells are only about 1mm longer than C-Cells.
     
  14. Tinker Dwight

    Tinker Dwight Registered User

    Oct 11, 2010
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    Hi
    That is what I'd try. The only additional problem is surge
    current. C-Zn cells provide a higher surge that may be needed
    for the clock than alkaline.
    If that were a problem, one could add a small supper cap
    to it as well. I've seen 0.5 farrads at 3 volts someplace
    for a few dollars.
    One might still need to add weight to get it within adjustment
    range. If so, try to add weight evenly around the cell. The distance
    from the fulcrum makes a difference.
    Tinker Dwight
     
  15. Wynen

    Wynen Registered User

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    Hello Tinker,
    in general the internal resistant of a Carbon-Zink battrey is about 3 -times higher than that of an alkaline battery (of the same size of course). So using an AA size alkaline cell is comparable to using a C size C-Zn cell. Nevertheless it is a good idea to add a big capacitor in parallel to the battery, to compensate the increasing internal resistant during the lifetime of the battery. But keep in mind that the spark of the contact might alos increase and that there should be a spark suppression resistor in parallel to the coil (about 10 times the resistant of the coil).

    Regards
    Hartmut
     

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