User-Installable Features; Lithium Ion Battery - Fujitsu LifeBook E751 User Manual

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. See "Battery Charge Indicator" on page 23.
• When using a high current device such as a modem, 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
A /A ,
UTO IRLINE ADAPTER ANOTHER BATTERY OR YOUR NOTEBOOK ITSELF
OPERATION OF YOUR NOTEBOOK BY DRAINING ALL AVAILABLE CURRENT INTO THE BAD BATTERY
. I
T MAY DAMAGE YOUR
59
AC ,
ADAPTER OPTIONAL
. I
T MAY ALSO PREVENT
.