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battery-a device that produces electricity; may have several primary or secondary cells arranged in parallel or series. electric battery. A battery-the battery used to heat the filaments of a vacuum tube.
BU-303: Confusion with Voltages. Explore why some battery packs pose odd voltages and how this affects the user. A battery is an electrochemical device that produces a voltage potential when placing metals of different affinities into an acid solutions (electrolyte).