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- A battery is any energy-storage device
- allowing release of electricity on demand.
- It is made up of one or more electrical cells.
- The introduction of rechargeable
- nickel-cadmium batteries has revolutionized
- portable electronic sound recording, video
- and laptop computers. These batteries offer
- a stable, short-term source of power free of
- noise and other electrical hazards.
- Some batteries can hold their charge for up
- to five years, they cannot, however, be
- recharged. In the last few years technology
- has made it possible to recharge virtually
- any standard "non-rechargable" battery.
-
- Subject by: Nathan Ludkin
-