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Chapter 3
User-Installable Features
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 deterioration. The Battery Charge Indicator on the Status
Indicator panel will flash when you try to charge a battery that is outside its operating temperature range.
“Battery Charging Indicator” on page 21.
•
When using a high current device such as a Multi-Format DVD Writer, Blu-ray RW drive, or the hard drive, using
the AC adapter will conserve your battery life.
D
O
NOT
LEAVE
A
FAULTY
BATTERY
IN
YOUR
NOTEBOOK
. I
T
MAY
DAMAGE
YOUR
AC
ADAPTER
,
OPTIONAL
A
UTO
/A
IRLINE
ADAPTER
,
ANOTHER
BATTERY
OR
YOUR
NOTEBOOK
ITSELF
. I
T
MAY
ALSO
PREVENT
OPERATION
OF
YOUR
NOTEBOOK
BY
DRAINING
ALL
AVAILABLE
CURRENT
INTO
THE
BAD
BATTERY
.
