A battery is a device that uses an electrochemical oxidation-reduction (redox) reaction to convert the chemical energy present in its active materials directly into electric energy. An electric circuit is used in this kind of reaction to transfer electrons from one material to another.
Historically, a “series of similar objects grouped together to perform a function” was referred to as a “battery,” as in an artillery battery. The phrase was first used by Benjamin Franklin in 1749 to describe a group of capacitors he had connected for his electrical experiments. A Battery is a device that transforms chemical energy into electrical energy. It can have one or more electrical cells. Every battery is essentially a galvanic cell with two electrodes that undergo redox reactions.
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