1.9 Batteries
1.9.3
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 1-14 lists the charging time and data preservation
period of the RTC battery.
Power ON (Lights Power LED)
Data preservation tome (Full-charged)
PORTEGE M300 Maintenance Manual (960-504)
Table 1-14 RTC battery charging time
Condition
1 Hardware Overview
Time
About 8 hours
About 30 days
1-31