1.8 Batteries 1 Hardware Overview
Satellite R20/TECRA M7 Maintenance Manual (960-572) [CONFIDENTIAL] 1-33
1.8.3 RTC Battery
The RTC battery provides the power supply to maintain the date, time, and other system
information in memory. Table 1-14 lists the battery charging time and data preservation
times.
Table 1-14 RTC battery charging/data preservation time
Time
Charging time AC adapter or main battery in use
(Power ON) 8 hours
Data preservation time (when fully charged) 30 days