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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 Charging icon on the
Status Indicator panel will flash when you try to charge a battery that is outside its operating
temperature range. See “Status Indicator Panel” on page 20.
• When using a high current device such as a Multi-Format DVD Writer, CD-ROM drive, optical
drive, or the hard drive, using the AC adapter will conserve your battery life.
DO NOT LEAVE A FAULTY BATTERY IN YOUR NOTEBOOK. IT MAY DAMAGE YOUR AC ADAPTER, OPTIONAL
A
UTO/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.
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