Lithium Ion Battery; Recharging The Batteries - Fujitsu Lifebook S2020 User Manual

S Series.book Page 37 Thursday, September 25, 2003 1:13 PM

Lithium ion Battery

Your LifeBook notebook has a Lithium ion battery that
provides power for operating your notebook when no
external power source is available. The battery is durable
and long lasting, but should not be exposed to extreme
temperatures, high voltages, chemicals or other hazards.
The Lithium ion battery operating time may become
shorter if it is used under the following conditions:
When used at temperatures that exceed a low of 5°C or
■
a high of 35°C. Extreme temperatures not only reduce
charging efficiency, but can also cause battery deterio-
ration. The Battery Charging icon on the Status Indi-
cator panel will flash when you try to charge a battery
that is outside its operating temperature range.
(See Battery Charging Indicators on page 12 for more
information)
When using a high current device such as a modem,
■
optical drive, or the hard drive, using the AC adapter
will conserve your battery life.
C A U T I O N
Do not leave a faulty battery in your LifeBook
notebook. It may damage your AC adapter, optional
Auto/Airline adapter, another battery or your notebook
itself. It may also prevent operation of your notebook
by draining all available current into the bad battery.
P O I N T S
■ Actual battery life will vary based on screen bright-
ness, applications, features, power management set-
tings, battery condition and other customer
preferences. Optical drive or hard drive usage will also
have a significant impact on battery life. The battery
charging capacity is reduced as the battery ages. If
your battery is running low quickly, you should
replace it with a new one.
Under federal, state, or local law it may be illegal to
■
dispose of batteries by putting 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)

RECHARGING THE BATTERIES

If you want to know the condition of the primary
Lithium ion battery, check the Battery Level 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 or Auto/Airline adapter. To recharge the
battery make sure the battery that needs to be charged
is installed in your LifeBook notebook and connect the
AC or Auto/Airline adapter.
U s e r I n s t a l l a b l e F e a t u r e s
P O I N T
Make sure that the Battery Charging indicator and the
percentage charge is shown inside the Battery Level icon
on the Status Indicator Panel.
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 notebook is in use while the
battery is charging. If you want to charge the battery
more quickly, put your notebook 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)
P O I N T
Using heavy current devices such as a modem or frequent
media drive accesses may prevent charging completely.
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 notebook will go into Suspend mode.
There is no guarantee that your data will be saved once
the notebook reaches this point.
C A U T I O N S
Once the low battery notification message appears,
■
you need to save all your active data and put your
LifeBook notebook into Suspend mode until you can
provide a new power source. You should provide a
charged battery, an AC power adapter, or Auto/Air-
line adapter as soon as possible.
■ When you are in Suspend mode there must always
be at least one power source active. If you remove all
power sources while your LifeBook notebook is in
Suspend mode, any data that has not been saved to
the hard drive will be lost.
Dead Battery Suspend mode shows on the Status indi-
cator just like the normal Suspend mode. Once your
notebook goes into Dead Battery Suspend mode you
will be unable to resume operation until you provide
a source of power either from an adapter, or a charged
battery. Once you have provided power, you will need to
press the Power/Suspend/Resume button to resume
operation. In the Dead Battery Suspend mode, your data
can be maintained for some time, but if a power source
is not provided promptly, the Power indicator will stop
flashing and go out, meaning that you have lost the data
that was not stored. Once you provide power, you can
continue to use your notebook while an adapter is
charging the battery.
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