Toshiba Satellite A300 series Maintenance Manual page 71

1.8.3 RTC Battery
The RTC battery provides the power supply to maintain the date, time, and other system
information in memory.
Table 1-10 lists the Time required for charges of RTC battery and data preservation time.
Table 1-10 Time required for charges of RTC battery
Power ON (Lights Power LED)
Data preservation tome (Full-charged)
Satellite A300 Maintenance Manual (960-Q02)
Condition
Chapter 1 Hardware Overview
Time
About 24 hours
About a month
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