Hitachi GD8000 User Manual page 33

GD8000 User Guide
To Install the Battery:
1.
Turn the computer over so you are looking at the bottom.
2.
Line up the battery connector.
3.
Press gently on the battery until it clicks into place.
NOTE
When using a battery pack for the first time, it is
recommended that you calibrate the battery so the gas gauge
accurately displays battery capacity.
Battery Charging
To charge the battery, install the battery pack and plug the AC
adapter into the computer and an electrical outlet. You can use
your computer while charging the battery. However, this will
increase the charging time.
While the battery is charging, the Battery Power LED
be active after 6-12 seconds and stay lit until the battery is fully
charged. When the battery is fully charged, the LED turns off.
If your computer is off or suspended, a fully discharged battery
takes about 4 hours to recharge. If your computer is turned on
it may take four to six (4- 6) hours to recharge the battery.
Charging
System On 3-6 hours depending on
temperature and processes
running
System Off 3 hours
Suspend
to RAM
Suspend
to Disk
NOTE
A fully charged battery can power the computer for
approximately four to five (4-5) hours, depending on usage
patterns. If your computer also has the optional Media Bay
battery, it will power the computer for an additional two to
three (2-3) hours.
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When to Replace the Battery
Over time, the battery's capacity gradually decreases. We
recommend that you replace your battery if it no longer
provides 70% of its original rated capacity.
WARNING
battery.
Heat Considerations
The computer's processor has been specially designed to
consume as little power as possible. However, working in a
hot environment, or working for long periods may raise the
temperature. Your computer takes the following steps to lower
temperature:
The cooling fan turns on. You may hear the fan and feel air coming
„ „
from a vent on the left side of the computer when this happens.
If the temperature continues to rise, processor activity is
„ „
reduced. You may notice a slight loss of performance if this
happens.
To prevent damage, if the computer gets too hot, the processor
„ „
stops and the computer shuts down.
Battery Calibration
will
Over time, as the battery is repeatedly drained and recharged,
battery runtime may decrease. Calibrate the battery the
first time you use it and then periodically for maximum
performance. The calibration process empties and charges the
battery. This allows the Windows battery gauge to accurately
monitor battery status.
Battery calibration will take from 6 to 12 hours, depending on
Discharging
how much power the battery already contains. The unit will
not suspend while calibration is running. It is okay to use your
3.5 hours
computer during battery calibration.
CAUTIONS
-
Do not disconnect AC power while battery calibration is running.
„ „
72 hours
Do not remove the battery while battery calibration is running.
„ „
7 days
When to calibrate the battery:
The first time you use it
„ „
After it has been in storage
„ „
If the gas gauge has become inaccurate
„ „
Every three months for optimum performance
„ „
Windows XP Battery Calibration
1.
Select
2.
Select
Operating with Battery Power
Only use approved batteries when replacing the
Start, All Programs , and Mobile Computer Tools
Battery Calibration
.
.