New battery technologies and their poten
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B.W. Burrows; H.R. Espig
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Article
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1979
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Elsevier Science
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English
β 580 KB
The principal use of batteries in the telecommunications industry is to provide standby or emergency d.c. power to telephone exchanges in the event of a failure or breakdown in the utility supply. Batteries are also used for standby power in microwave relay stations, for emergency lighting, and a va