Lithium Ion Battery; Recharging The Batteries - Fujitsu LifeBook C-6651 User Manual

B5FH-4941.book Page 35 Friday, December 14, 2001 2:18 PM

Lithium ion Battery

Your Fujitsu LifeBook notebook has a Lithium ion
battery that provides power for operating your LifeBook
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 exceeds a low of 5°C
or a high of 35°C. 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 14 for more
information)
When using a high current device such as a modem,
DVD, or hard drive, using the AC adapter will
conserve your battery life.
C A U T I O N S
Actual battery life will vary based on screen bright-
ness, applications, features, power management set-
tings, battery condition and other customer
preferences. Media player drive or hard drive usage
may 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.
Do not leave a faulty battery in your LifeBook note-
book. It may damage your AC adapter, optional
Auto/Airline adapter, a second battery or your Life-
Book notebook itself. It may also prevent operation of
your LifeBook 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 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 charge 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
L i t h i u m i o n B a t t e r y
is installed in your LifeBook notebook and connect the
AC or Auto/Airline adapter. The Lithium ion battery can
also be charged using an external battery charger, avail-
able from Fujitsu.
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 LifeBook notebook is in use
while the battery is charging. If you want to charge the
battery more quickly, put your LifeBook notebook into
Suspend mode, or turn it off while the adapter is
charging the battery. (See Power Management on page 30
for more information on Suspend mode and shutdown
procedure)
C A U T I O N
Using heavy current devices such as a Modem or
frequent media player 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 LifeBook 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 either plug in an AC power adapter or
Auto/Airline adapter, or save all your active data,
power down your system, and install a charged
battery as soon as possible.
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 switch, or 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
LifeBook notebook goes into Dead Battery Suspend
mode you will be unable to resume operation until you
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