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Batteries for Emergency Systems

Batteries for Emergency Systems

A battery is often needed to supply an emergency source of power for periods longer than three hours and so the value of the current drawn from the battery is low in comparison with the total stored energy. It is normal practice for legislating authorities to specify that the battery must be capable of repeating its duty cycle no more than 12 hours after the termination of any emergency discharge.

It is found that often, batteries in certain emergency lighting and fire & security alarms applications, are often used, on a fit and forget basis and so the choice of the battery may therefore depend upon its ability to recover from the effects of poor maintenance and to always be available to supply power when needed.

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