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Batteries and Their Importance We use batteries everyday, we use them to start our cars and to listen to our Walkmans. I have a few questions: How do batteries work? What are the different kinds of batteries

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  • Essay length: 1032 words
  • Submitted: 24/11/2005
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AS and A Level Molecules & Cells

The first 200 words of this essay...

Batteries and Their Importance

We use batteries everyday, we use them to start our cars and

to listen to our Walkmans. I have a few questions: How do batteries

work? What are the different kinds of batteries? Why do they die? Why

do they lose energy when they are not used for a long time? Well I

tried my best to find the best answers for these questions and a

little more.

Battery, also called an electric cell, is a device that

converts chemical energy into electricity. All batteries contain an

electrolyte, a positive electrode, and a negative electrode. There are

two general types of batteries. Batteries in which chemicals cannot be

reconstituted into their original form once their energy have been

converted these are called primary cells. Batteries in which the

chemicals can be reconstituted by passing an electric current through

them in the opposite direction are known as secondary cells, are

rechargeable cells.

The primary battery is the most common type of battery used

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