A Battery's Life
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A battery is a device that produces electricity by chemical action.
A battery consists of one or more units called electric cells. Each cell
has the chemicals and parts needed to make an electric current. The
word battery actually means a group of connected cells. The word
battery is usually referred to single cells , such as those that operate
flashlights and electric toys. They are an easy source of electricity that
gives power to equipment as radios, tape recorders and television sets.
In cars, a battery gives power to start the engine. Batteries also give
electricity in spacecraft's and submarines. During power failures,
batteries provide an emergency supply of electricity for telephones, fire
alarms and hospitals and other buildings.
The first battery was developed by Count Alessandro Volta, and
Italian scientist in the late 1790's...