Toshiba Z40-A User's Guide download pdf (Page 80)

Mobile Computing

Charging batteries

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.

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 periodically operate your computer on battery

power until the battery discharges completely.

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 76.

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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Toshiba Z40-A User's Guide Page 80