SECTION 2 LITHIUM BATTERY REPLACEMENT
2.1 General
The Lithium Battery (CR2032) is installed on the CPU Card in Main KSU. It provides the battery-
backup of the RAM memory for approximately 36 months. When the battery power becomes low, the
system will display a "Warning Message" to the assigned Display Multiline Telephone as below.
11-10 WED 1:49PM
Low battery!
Menu Dir VM:00 CL:00
Figure 4-5 Warning of Low Battery
2.2 Lithium Battery Specification
Before replacing the Lithium battery, make sure which type of Lithium battery is required and prepare
the new Lithium battery. (CR2032)
NEC recommends that a backup of the customer data is performed before
powering off the system (either PCPro file or CF card backup) in order to
replace the backup battery.
• Risk of explosion if the battery is replaced by an incorrect type.
• Dispose of used batteries as instructed by the manufacturer of the battery.
ISSUE 4.1 (R5.1) SL1100
Hardware Manual 4-3
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