Toshiba Satellite 2800-S201 User Guide - Page 97

Charging the RTC battery, Monitoring battery power

Page 97 highlights

Mobile Computing 97 Monitoring battery power Charging the RTC battery The computer contains an internal battery that provides power for the real-time clock (RTC) and calendar. During normal use, the main battery keeps the RTC battery adequately charged. Occasionally, the RTC battery may lose its charge completely, especially if you have had the computer turned off for a long time. To recharge the RTC battery, plug in the computer and turn it on for at least 24 hours. NOTE: It is seldom necessary to charge the RTC battery because it charges while the computer is on. If the RTC battery is low, the real-time clock and calendar may display the incorrect time and date or stop working. When Hibernation mode is enabled and the RTC battery is completely discharged, a warning prompts you to reset the real-time clock. The computer can be used while the RTC battery is being charged, although the charging status of the RTC battery cannot be monitored. If the power is on, it takes approximately 24 hours to fully charge the RTC battery. If the power is off, the RTC battery will not charge. Monitoring battery power The battery light indicates the main battery's current charge. It glows green when the battery is fully charged. It glows amber while the battery is being charged. It does not glow if the external power source is disconnected or if the battery is completely discharged. Part I: Getting to Know Your Computer

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Part I: Getting to Know Your Computer
Mobile Computing
Monitoring battery power
97
Charging the RTC battery
The computer contains an internal battery that provides
power for the real-time clock (RTC) and calendar.
During normal use, the main battery keeps the RTC battery
adequately charged. Occasionally, the RTC battery may
lose its charge completely, especially if you have had the
computer turned off for a long time.
To recharge the RTC battery, plug in the computer and turn
it on for at least 24 hours.
NOTE: It is seldom necessary to charge the RTC battery
because it charges while the computer is on. If the RTC
battery is low, the real-time clock and calendar may display
the incorrect time and date or stop working.
When Hibernation mode is enabled and the RTC battery is
completely discharged, a warning prompts you to reset the
real-time clock.
The computer can be used while the RTC battery is being
charged, although the charging status of the RTC battery
cannot be monitored. If the power is on, it takes
approximately 24 hours to fully charge the RTC battery. If
the power is off, the RTC battery will not charge.
Monitoring battery power
The battery light indicates the main battery’s current charge.
It glows green when the battery is fully charged. It glows
amber while the battery is being charged. It does not glow if
the external power source is disconnected or if the battery is
completely discharged.