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( Battery (electricity))
In electronics, a battery or voltaic cell is a combination of one or more electrochemical Galvanic cells which store chemical energy that can be converted into electric potential energy, creating electricity. Since the invention of the first Voltaic pile in 1800 by Alessandro Volta, the battery has become a common power source for many household and industrial applications, and is now a multi-billion dollar industry. The name "battery" was coined by Benjamin Franklin for an arrangement of multiple Leyden jars (an early type of capacitor) after a battery of cannon.[1] Common usage has evolved to (inaccurately) include a single electrical cell in the definition.[2][3] The modern development of batteries started with the Voltaic pile, invented by the Italian physicist Alessandro Volta in 1800.[4] (An early form of electrochemical battery called the Baghdad Battery may have been used in antiquity.[5]) In 1791, Luigi Galvani published a report on "animal electricity."[6] He created an electric circuit consisting of two different metals, with one touching a frog's leg and the other touching both the leg and the first metal, thus closing the circuit. In modern terms, the frog's leg served as both the electrolyte and the sensor, and the metals served as electrodes. He noticed that even though the frog was dead, its legs would twitch when he touched them with the metals.
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