Toshiba Tecra R940-Landis-PT439U-05C058G1 User Guide 2 - Page 87

Charging the RTC battery, used to store your computer's configuration settings. When fully

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Mobile Computing 87 Running the computer on battery power To charge the main battery while it is in your computer, 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 cannot 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. The battery may not start charging immediately under the following conditions: ❖ The battery is extremely hot or cold. To ensure that the battery charges to its full capacity, wait until it reaches room temperature (50 to 80 degrees Fahrenheit, 10 to 26 degrees Celsius). ❖ The battery is almost completely discharged. Leave the power connected and the battery should begin charging after a few minutes. HINT: Once the battery is fully charged, we recommend that you operate your computer on battery power until the battery discharges completely. Doing this extends battery life and helps ensure accurate monitoring of battery capacity. Please make a complete back up of your data to external media before discharging the battery. For more information, see "Backing up your work" on page 79 Charging the RTC battery Your computer has an internal real-time clock (RTC) battery. The RTC battery powers the System Time Clock and BIOS memory used to store your computer's configuration settings. When fully charged, it maintains this information for up to a month when the computer is powered off. The RTC battery may have become completely discharged while your computer was shipped, resulting in a CMOS error message during startup. The error message may vary by computer model.

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87
Mobile Computing
Running the computer on battery power
To charge the main battery while it is in your computer, 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 cannot 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.
The battery may not start charging immediately under the following
conditions:
❖
The battery is extremely hot or cold.
To ensure that the battery charges to its full capacity, wait until
it reaches room temperature (50 to 80 degrees Fahrenheit, 10 to
26 degrees Celsius).
❖
The battery is almost completely discharged.
Leave the power connected and the battery should begin
charging after a few minutes.
HINT: Once the battery is fully charged, we recommend that you
operate your computer on battery power until the battery discharges
completely. Doing this extends battery life and helps ensure accurate
monitoring of battery capacity.
Please make a complete back up of your data to external media
before discharging the battery. For more information, see
“Backing
up your work” on page 79
Charging the RTC battery
Your computer has an internal real-time clock (RTC) battery. The
RTC battery powers the System Time Clock and BIOS memory
used to store your computer’s configuration settings. When fully
charged, it maintains this information for up to a month when the
computer is powered off.
The RTC battery may have become completely discharged while
your computer was shipped, resulting in a CMOS error message
during startup. The error message may vary by computer model.