Backup Battery; Rtc Battery - Toshiba T1910 Maintenance Manual Addendum

1.9.3 Backup Battery
The backup battery maintains data for AutoResume. The power source used to back-up the
AutoResume data is detennined according to the following priority:
AC adapter> Main battery> Backup battery
The backup battery is charged by the main battery or AC adapter when the system is powered
on. Table 1-10 shows the charging time and data preservation period of the backup battery.
Table 1-10 Backup Battery CharginglData. Preservation Time
Time
Charging Time Power On 16H
Power Off (with AC Adapter)
60H
Power Off
(Without
AC Adapter) Doesn't charge
Data preservation
period
(full charge) 8H
1.9.4 RTC Battery
The RTC battery provides power to keep the current date, time and other setup information
in
memory while the computer is turned off. Table 1-11 shows the charging time and data
preservation period of the RTC battery.
Table 1-11 RTC Battery CharginglData Preservation Time
Time
Charging Time Power On 48H
Power Off Doesn't charge
Data preservation
period
(full charge)
1 month
Add-16
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