Rtc Battery; Table 1-8 Rtc Battery Charging/Data Preservation Time; Batteries - Toshiba TECRA S1 Maintenance Manual

1.9 Batteries

NOTE: The time required for normal charge depends on the power consumption by the
system. Using the fluorescent lamp and frequently accessing the disk consume much
power and lengthen the charge time.
Detection of full charge
1.9.3
The RTC battery provides power to keep the current date, time and other system information
in memory while the computer is turned off. Table 1-8 lists the charging time and data
preservation period of the RTC battery.
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Any of the following cases stops battery charge:
1. The battery becomes fully charged.
2. The AC adapter or battery pack is removed.
3. The battery or AC adapter voltage is abnormal.
A full charge is detected only when the battery is being charged by quick or normal
charge. A full charge is detected when either of the following conditions is met:
1. The current in the battery charging circuit drops below the predetermined
value.
2. The charging time exceeds the fixed limit.

RTC Battery

Table 1-8 RTC battery charging/data preservation time

Status
Charging AC Adapter or main battery pack used
time
(power on)
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1 Hardware Overview
Time
50 hours
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