Toshiba Satellite M40 Maintenance Manual page 29

1.6 Batteries
1.6.2 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. The table below lists the charging time and data
preservation period of the RTC battery. The RTC battery is charged by the adaptor or main
battery, while the computer is powered on.
Charging Time (power on)
Data preservation period (full charge)
Satellite M40X Series Maintenance Manual
Status
1 Hardware Overview
Time
About 24 hours
1 month
[CONFIDENTIAL]
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