1  Hardware Overview  1.9 Batteries 
1-30      [CONFIDENTIAL]      Satellite Pro S300, TECRA A10/S10/P10 Maintenance Manual (960-684) 
  Data preservation time  
When turning off the power in being charged fully, the preservation time is as 
following Table 1-11. 
Table 1-11  Data preservation time 
Condition preservation time 
Standby  About 3 days Battery(4,000 mAh) 
Shutdown  About 40 days Battery(4,000 mAh) 
Standby  About 4 days (5,100 mAh) 
Shutdown  About 55 days(5,100 mAh) 
Standby  About 5 days 
 Extended Capacity battery (7,050 mAh) 
Shutdown  About 75 days  
Extended Capacity battery (7,050 mAh) 
Standby  About 6 days  
High capacity battery(7,200 mAh) 
Shutdown  About 95 days  
High capacity battery(7,200 mAh) 
 
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 1-12 lists the charging time and data 
preservation period of the RTC battery.  
Table 1-12   RTC battery charging/data preservation time 
Status Time 
Charging Time (power on)  24 hours 
Data preservation period (full charge)  30 days