How Batteries Work

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Imagine a world where everything that used electricity had to be plugged in; flashlights, hearing aids, cell phones…

While there are many different types of batteries, the basic concept by which they function remains the same. When a device is connected to a battery, a reaction happens which produces electrical energy. This is known as an electrochemical reaction.

The Italian physicist count Alessandro Volta first discovered this process in 1799, when he created a simple battery from metal plates and brine soaked cardboard or paper. He thought of providing long distance communications, using only one Boolean bit, an iron wire supported by wooden poles was to be strung from Como to Milan in Italy. At the receiving end, the wire would be placed in a jar filled with methane gas. To signal a coded event, an electrical spark would be sent by wire to detonate the jar.

By Nerea Sanz