Backup Battery; Caution Of Low Battery Charge - CipherLab 8600 Reference Manual

1.1.2 BACKUP BATTERY

The backup battery, a 3.0V/18mAh rechargeable Lithium button cell on the main board,
takes charge of the retention of data in SRAM, real-time clock, and calendar when the
main battery is removed or drained. When fully charged, the backup battery can work for
at least 25 days without the main battery. In the meantime, you have to replace the
main battery as soon as possible. It takes at least 72 hours to fully charge the backup
battery; however, it is not necessary to fully charge the backup battery for the mobile
computer to work.
Monitor voltage level (see

1.1.3 CAUTION OF LOW BATTERY CHARGE

The battery pack is the only power source for the mobile computer to work. It also
charges the backup battery on the main board so that the data stored in SRAM can be
retained properly. Therefore, when the main battery charge goes low, you need to
replace the battery pack with a charged one or charge it as soon as possible. Most of all,
you should upload important data on a regular basis.
Warning: Data loss may occur in SRAM during low battery condition. Always save
data before running out of power or keep a fresh battery for replacement.
3.5 Power)
Chapter 1 Using The Mobile Computer
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