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An electric battery is a device consisting of one or more electrochemical cells that convert stored chemical energy into electrical energy

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It's a noob question, but every circuit I make uses 5V: 74LS uses 5V, ATMEGA328 uses 5V and so on. But in reality, everybody's designing circuits and shove a voltage regulator with 9V or 12V power source. Wouldn't a company who makes 6V batteries sell by billions? …
asked Jul 30 '14 by Gil Megidish