Rtc Battery; Table 1-7 Data Preservation Time; Table 1-8 Rtc Battery Charging/Data Preservation Time - Toshiba PORTEGE R300 Maintenance Manual

1 Hardware Overview
Charge is stopped in the following cases.
1. The main battery is fully charged.
2. The main battery is removed.
3. Main battery or AC adapter voltage is abnormal.
4. Charging current is abnormal.
Data preservation time
When turning off the power in being charged fully, the preservation time is as following
Table 1-7.
Battery type
Main battery (7,650 mAh)
Main battery (5,100 mAh)

1.7.2 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 1-8 lists the charging time and data
preservation period of the RTC battery.

Table 1-8 RTC battery charging/data preservation time

Charging Time (power on)
1-22 [CONFIDENTIAL]
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Table 1-7 Data preservation time

Standby mode
Status
Boot mode
10 days
7 days
Time
8 hours
PORTÉGÉ R300 Maintenance Manual (960-591)
150 days
100 days