EnerSys Alpha Micro 100, Инструкция по установке и эксплуатации

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017-220-J0 Rev C
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11.2 Testing and Replacing the Batteries
11.2.1 Battery life
Batteries lose their ability to store power as they age. Test the batteries regularly to ensure that they can continue to
provide reliable service. Battery life is reduced by three major factors:
• Temperature – higher ambient temperatures, especially above 25°C, reduce battery life. For example, an average
operating temperature of 27°C will likely reduce the life of the battery by 25%. Ensure that the Alpha Micro 100
and the batteries, are situated in a well ventilated area with adequate temperature control. A cool environment is
preferable.
• Number of discharge cycles – the more frequent the batteries are discharged, the shorter the battery life. Fre-
quent power outages increase the need for more frequent battery replacement.
• Depth of discharge – the longer the batteries are required to provide back up power, the shorter the battery life.
Frequent full discharging and the associated recharging, reduces battery life. Shut down the electrical load or
return to primary power as soon as possible to extend the battery life.
11.2.2 Battery Run Time
The chart below shows typical run times (time to full discharge) for the standard batteries supplied with this unit.
These runtimes are for batteries in new and good condition. The run time performance will deteriorate over time in a
progressively decreasing curve.
Battery V
oltage (V)
Discharge Time
Discharge Rate Characteristics
100%
Load
50%
Load
Figure 54 — Typical Discharge Characteristics for Lead Acid Batteries