Casio IT-800 Series Hardware Manual page 27

Memory backup
period (with battery
pack and memory
backup battery)
Battery pack charge
period
Charge method
Memory backup
battery charge
period
Backup battery
specification
Memory backup
battery rated
capacity
Method to charge
memory backup
battery
Charge Method
Table 2.3
Cradles, Charger
HA-H60IO
HA-H62IO
HA-H30CHG
HA-H35CHG
Backup by Backup Battery
Table 2.4
Backup item
RAM and RTC
RTC
Approx. 72 hours for RAM
Approx. 4 hours by HA-D20BAT
Approx. 7 hours by HA-D21LBAT
See Table 2.3.
Approx. 4 days (for fully charged level)
See Table 2.4.
50 mAh
When power supply is made via
cradle
When power supply is made by
installed battery pack (when
terminal's power on )
When power supply is made by
installed battery pack (when
terminal's power off)
Condition to start charging
Set the terminal on one of the
options listed on left side.
Backup periods
0 to 10 minutes The backup for RAM and RTC (integrated clock) is about 10
minutes by integrated timer. After elapse of 10 minutes, the backup
is for only the RTC.
10 minutes to 4 The over-discharge protection starts when remaining capacity of
days the memory backup battery is at 10 percent.
Once the over-discharge protection takes place, the backup to the
RTC stops.
Yes
Yes
Yes
Action after charge is complete
Charging the battery pack starts again
when the output voltage is lower to
certain level.
Remarks
27
- The backup period starts
when "Main battery low
warning" appears.
- Power on the terminal is
turned off while the battery
is being charged.
- At room temperature.
-
- Battery pack is being
installed in the terminal.
- At room temperature.