Toshiba PSUL1U-00801K User Manual

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The computer also has an internal real-time-clock (RTC) battery.

The RTC battery powers the RTC memory that stores your system 
configuration settings and the current time and date information. It 
maintains this information for up to a month while the computer is 
turned off.

TECHNICAL NOTE: Depending on your system, the RTC battery may 
only charge while the computer is turned on.

Your computer ships with the power management options preset 
to a configuration that will provide the most stable operating 
environment and optimum system performance for both AC power 
and battery modes.

Changes to these settings may result in system performance or 
stability issues. Users who are not completely familiar with the power 
management component of the system should use the preset 
configuration. For assistance with setup changes, contact Toshiba’s 
Customer Support Center.

The battery needs to be charged before you can use it to power the 
computer.

To charge the main battery, plug the computer into a live electrical 
outlet. The battery charges whether the computer is on or off.

TECHNICAL NOTE: The recharging of the battery may not occur when 
your computer is using all of the power provided by the AC adaptor to 
run applications, features, and devices. Your computer's Power Options 
utility can be used to select a power level setting that reduces the power 
required for system operation and will allow the battery to recharge.