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To ensure that the Battery Pack maintains its maximum capacity, operate the
computer on battery power at least once a month until the Battery Pack is fully
discharged. Refer to Extending battery life in this chapter for procedures. If the
computer is continuously operated on AC power, through an AC adaptor for an
extended period, more than a month, the battery may fail to retain a charge. It may
not function efficiently over the expected life of the battery and the Battery LED
may not indicate a low-battery condition.
Real time clock battery
The Real Time Clock (RTC) battery provides power for the internal real time clock
and calendar. It also maintains the system configuration.
The RTC battery is charged when the power of the computer is on.
If the RTC battery becomes completely discharged, the system loses this data and
the real time clock and calendar stop working. The following message appears when
you turn on the power:
*** Bad RTC battery ***
Check system. Then press [F1] key . . . . . .
CAUTION: The computer’s RTC battery is a lithium ion battery and
should be replaced only by your dealer or by a TOSHIBA service
representative. The battery can explode if not properly replaced, used,
handled or disposed of. Dispose of the battery as required by local
ordinances or regulations.
NOTE: You can change the setting of RTC by pressing F1 key. Refer to
Chapter 9, Troubleshooting for the detail.
Care and use of the Battery Pack
The Battery Pack is a vital component of portable computing. Taking proper care of
it will help ensure longer operating time on battery power as well as a longer life for
your Battery Pack. Follow the instructions in this section carefully to ensure safe
operation and maximum performance.
Care and use of the Battery Pack