SECTION 28: FREQUENTLY ASKED QUESTIONS
28.1 BATTERY STORAGE LIFE
The storage life of the Lithium battery used to maintain the real-time clock during power failure is
approximately 10 years.
Unused batteries should be stored at room temperature. During service, the batteries may be safely
used within the specifications of the unit.
28.2 DATA RETENTION TIME
The expected data retention time for the controller is a minimum of 10 years. However, the Real Time
Clock will only be maintained for about 3 years, when using the original or recommended replacement battery.
Note that the battery is only used when the unit is turned off.
28.3 LCD BACKLIGHT LIFE EXPECTANCY
The expected life of the backlight under normal operating temperatures as specified in Section 25.1 is
100,000 hours (> 10 Years).
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