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Real time clock battery – Toshiba Qosmio G20 (PQG21) User Manual

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6-4

User’s Manual

Power

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 indicator 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.
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:

S

**** RTC battery is low or CMOS checksum is
inconsistent ****
Press [F1] key to set Date/Time.

You can change the Real Time Clock settings by pressing the F1 key.

Refer to Chapter 10,

Troubleshooting

, for details.

The battery pack is a lithium ion battery, which can explode if not

properly replaced, used, handled or disposed of. Dispose of the battery

as required by local ordinances or regulations. Use only batteries

recommended by TOSHIBA as replacements.

Do not remove the battery pack while the computer is in Standby Mode.

Data is stored in RAM, so if the computer loses power it will be lost.

When the computer is powered off in Standby Mode, and the AC

adaptor is not connected, the battery pack supplies power to maintain

data and programs in memory. If the battery pack is completely

discharged, Standby Mode cannot function and the computer loses all

information in memory.

The computer’s RTC battery is a Ni-MH 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.