How to make a vinegar battery

The above image shows the construction of this simple battery. A zinc coated nail (2" galvanized nail) and length of copper wire (6 cm of 14 gauge copper wire) are suspended in vinegar (4% acetic acid). A discarded film container is ideal for this project.

The copper lead is the "+" terminal of the battery and the galvanized nail is "-".

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According to our meter, this vinegar battery is producing .834 volts. This battery still only produces a tiny current.

Source - HilaRoad