Vinegar Battery

Discussion in 'The Projects Forum' started by Lightfire, Apr 11, 2011.

  1. Lightfire

    Thread Starter Well-Known Member

    Oct 5, 2010
    690
    21
    Okay, here we go.

    Materials

    50 ml Vinegar
    Copper Strip
    Zinc Strip
    Wire
    Bulb
    Glass

    How many volts it will produce if it is 50 ml? How many ah also? or mah? is it depends on the amount of vinegar???
     
  2. wayneh

    Expert

    Sep 9, 2010
    12,145
    3,055
    Voltage depends on the chemistry. It's what is known as an intrinsic property, independent of scale and only dependent on the thermodynamics.

    Current (mA) and capacity (mA-hours or mAH) depend on the volumes, surface areas, cleanliness of the electrodes, and so on. Current is essentially a measure of how fast the reaction is occurring. This is called an extrinsic property, and can be very hard to predict because of all the variables. Current will usually start at one level and decrease as your cell runs down - just like a battery - but also because of fouling of the electrodes, reducing the surface area.
     
  3. DickCappels

    Moderator

    Aug 21, 2008
    2,658
    632
    Copper and Zinc in a solution can get you up to 1.1 volts if not loaded. With only 50 ml and simple strips of metal, meaning only a sq. few cm of each metal, I would not expect you to be able to get more than a few hundred microamps, and that would probably also mean loading down the voltage considerably.

    You could flash an LED with it if you use a very efficient voltage up-converter.
     
  4. magnet18

    Senior Member

    Dec 22, 2010
    1,232
    124
    expect about a volt at a very, very small current.
     
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