The invention history of primary batteries can be traced back to the late 18th century, when Italian biologist Gavanni was conducting a famous frog experiment. When he touched a frog's leg with a metal surgical knife, he found that the frog's leg would twitch. The well-known Volt believes that this is caused by the electrical stimulation generated between the metal and the frog leg tissue fluid (electrolyte solution). In 1800, Volt designed a device called a voltaic stack based on this, with zinc as the negative electrode and silver as the positive electrode, and salt water as the electrolyte solution. In 1836, Daniel invented the world's first practical battery and used it for early railway signal lights
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Function of testing report:
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