1 Hardware Overview 1.10 Batteries
1-30 Satellite A20 Maintenance Manual (960-444)
1.10.4 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 1-10 lists the charging time and data
preservation period of the RTC battery. The adapter or main battery charges the RTC battery,
while the computer is powered on.
Table 1-10 RTC battery charging/data preservation time
Status Time
Charging Time (power on) About 8 hours
Data preservation period (full charge) 1 month