Fujitsu LifeBook N6420, User Manual

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39
U s e r - I n s t a l l a b l e F e a t u r e s
Lithium ion Battery
Your Fujitsu LifeBook notebook has a Lithium ion
battery that provides power for operating your note-
book when no external power source is available. The
rechargeable battery is durable and long lasting, but
should not be exposed to extreme temperatures, high
voltages, chemicals or other hazards. For information
on maximizing your battery life, refer to the section
entitled “Power Management” on page 32.
The Lithium ion battery operating time may become
shorter if it is used under the following conditions:
■
Your system is set to use the Max Battery power
scheme when running on battery power. If you change
the power scheme to a different profile, your battery
life may vary.
■
When used at temperatures that exceed a low of
5°C (40°F) or a high of 35°C (95°F). Extreme
temperatures not only reduce charging efficiency, but
can also cause battery deterioration. The charging
icon on the Status Indicator panel will flash when you
try to charge a battery that is outside its operating
temperature range.
(See Battery Charging Indicator on
page 15 for more information)
■
When using a high current device such as a modem,
DVD/CD-RW drive, DVD writer, or hard drive, using
the AC adapter will conserve your battery life.
RECHARGING THE BATTERIES
If you want to know the condition of the primary
Lithium ion battery, check the Battery Status indicator
located on the Status Indicator panel. The indicator
changes as the battery level changes.
The Lithium ion battery is recharged internally using the
AC adapter. To recharge the battery make sure the
battery that needs to be charged is installed in your Life-
Book notebook and connect the AC adapter
.
There is no memory effect on the Lithium ion battery
therefore you do not need to discharge the battery
completely before recharging. The charge times will be
significantly longer if your LifeBook notebook is in use
while the battery is charging. If you want to charge the
battery more quickly, put your LifeBook into Suspend
mode, or turn it off while the adapter is charging the
battery.
(See Power Management on page 32 for more
information on Suspend mode and shutdown procedure)
Low Battery State
When the battery is running low, a low battery notifica-
tion message will appear. If you do not respond to the
low battery message, the batteries will continue to
discharge until they are too low to operate. When this
happens, your LifeBook notebook will go into Suspend
mode. There is no guarantee that your data will not be
lost once the notebook reaches this point
.
Note that you can change the state in which the battery
goes into Suspend mode in the Power properties of the
Control Panel.
■ Do not leave a faulty battery in your
LifeBook notebook. It may damage your
AC adapter or your notebook itself. It
may also prevent operation of your
notebook by draining all available cur-
rent into the bad battery.
■
Under federal, state, or local law it may
be illegal to dispose of batteries by put-
ting them in the trash. Please take care
of our environment and dispose of
batteries properly. Check with your local
government authority for details
regarding recycling or disposing of old
batteries. If you cannot find this
information elsewhere, contact your
support representative at:
1-800-8FUJITSU (1-800-838-5487).
Actual battery life will vary based on
factors such as screen brightness,
applications, features, power management
settings, battery condition and other
customer preferences.
DVD/CD-RW,
DVD- writer
, or hard drive usage may
also have a significant impact on battery
life. Battery charging capacity is reduced as
the battery ages. If your battery is running
low quickly, you should replace it.
Make sure the Battery Charging indicator
and the percentage charge is shown inside
the Battery Status icon on the Status
Indicator Panel.
Using high current devices such as a
modem or frequent optical drive accesses
may prevent complete charging.
To prevent loss of data, you should save all
your active data and put your notebook
into Suspend mode when the low battery
message appears, until you can provide a
new power source. When you are in
Suspend mode, there must always be at
least one power source active. If you turn
off the power with the power/suspend/
resume button, or remove all power
sources while your notebook is in Suspend
mode, any data that has not been saved to
the hard drive will be lost. You should
provide power to your notebook from an
AC power adapter as soon as possible.
N6420-Vista.book Page 39 Friday, February 16, 2007 4:48 PM