Find out how to combine the battery and power supply to meet peak requirements.
The main purpose of a stationary battery is to provide power during power outage. Battery banks are also designed to provide extra power during high-traffic periods when the AC power supply does not have sufficient capacity to feed the system. In this case, the battery acts as a buffer similar to the battery in a hybrid car that assists in acceleration.
Cellular repeater towers are an example where the backup battery serves as a buffer. The batteries get fully charged during off-peak periods and go into discharge mode to assist the AC power supply during the peak times.
When relying on the battery as buffer, make certain that the battery has enough time to charge between peak periods. The net charge must always be greater than what was drawn from the battery. Avoid deep discharges as this would wear down the battery prematurely. Note that stationary and starter batteries are not made for deep cycling. If periodic cycling is needed, choose a deep-cycle battery.
Last updated 2016-02-23
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