Sharp PC-9080 Manual page 49

Using Battery Power
The rechargeable lithium-ion battery pack allows you to operate the notebook
without an external power source. When fully charged, a single battery pack can
supply power to your notebook for up to 2 hours; much longer periods of time may
be possible if the notebook's advanced power management features have been
activated. You can also install a second battery pack in place of the floppy disk drive
or CD-ROM drive, to double the capacity.
The amount of time a battery charge will last will depend on the notebook
usage. Applications which heavily use the peripherals, like the floppy disk
or the CD-ROM drive, will experience shorter power on time.
Low Battery Indication
When your notebook senses that the battery only has enough charge to continue for a
few minutes, it will alert you to a low battery condition by blinking the red battery
status LED and sounding a battery low warning beep. The remaining operating time
depends on the power you are consuming: if you are using the audio system, PC
3
Card slots, CD-ROM or hard and floppy disk drives, your notebook might run out of
charge very quickly. You should always respond to the battery low indication by
connecting to AC power or turning off your notebook, or suspending your notebook
to disk. If you do not do so, the notebook will automatically suspend to disk
(regardless of the setting of the Suspend Mode option in the Setup Utility) and turn
off. The contents of the memory will be stored in the suspend-to-disk partition. You
will be unable to restart the notebook until you have connected to AC or installed a
fresh, charged battery.
If the notebook is in the Suspend to RAM mode when the battery is
critically low, the notebook will attempt to Suspend to Disk (if enabled in
the Setup Utility), and then turn off.
Charging the Battery
To recharge the battery, connect AC to the notebook as described in the previous
section and turn off the notebook. Approximately three hours are required to fully
charge a low battery(or five hours if two batteries are installed). The Battery Status
Indicator lights in orange while the battery is charging. The indicator flickering in
the recharge may indicate some trouble. Disconnect the notebook, extract the battery
pack, re-insert it, and connect the notebook to AC again. If the indicator still flickers,
the system has a problem.
3-4 Power Sources