Toshiba Portege M100 Maintenance Manual - Page 35
RTC battery, Hardware Overview, Batteries, Table 1-9, RTC battery charging/data preservation time
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1 Hardware Overview 1.8 Batteries q Detection of full charge A full charge is detected when the battery is charging at charge, and under any of the following conditions: 1. The battery charging current drops under the predetermined limit. 2. The charging time exceeds the limit. 3. The battery's temperature is over 60°C. 1.8.4 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 1-9 lists the charging time and data preservation period of the RTC battery. The RTC battery is charged by the adapter or main battery, while the computer is powered on. Table 1-9 RTC battery charging/data preservation time Status Charging Time (power on) Data preservation period (full charge) Time 8 hours 1 month 1-20 PORTEGE M100 Maintenance Manual (960-452)