Electra Elite IPK II Document Revision 1
General Description Manual 5 - 19
SECTION 11 BATTERY BACKUP
The Electra Elite IPK II system has battery backup functions for system backup and
for memory backup.
11.1 System Backup
During a power failure, the system is backed up using a rechargeable battery.
This battery backup supports all system operations for approximately 30
minutes.
When a brownout or power failure occurs, and the battery backup circuit is not
activated, Time and date, Terminal status (e.g., MIC), and SMDR data reset.
System data is not lost due to the battery backup circuit.
When a CPUII( )-U10 ETU is installed and the system or battery backup fails
for any reason, the clock/calendar must be set. The fully charged battery
retains memory for approximately 7 days.
11.2 Memory Backup
The CPUII( )-U( ) ETU has a battery installed to provide backup of system
memory. When the battery is fully charged, system memory (programmed
data) is retained for approximately 21 days.
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