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Precautions for Battery Pack
WARNING
ELECTRIC SHOCK
All battery packs are extremely delicate products. When installing or removing one, do
not drop it or subject it to strong shocks. If this should happen, do not use that battery
pack in the interest of safely, because there is a risk of electric shock or malfunction.
Discharge
After you charge the battery pack, even if you store it without using it, over about 1 month it will
naturally discharge.
When the computer won't be used for a considerably long time (for one month or more), remove
the battery pack from the computer and keep it in a cool place. If the computer is left with the
battery pack set inside, the battery overdischarges and its service life is shortened.
Service life
• The battery pack is a consumption item. After you use it for a long time, its charging capacity
drops.
• Replace the battery after about 300 to 500 charge/discharge cycles.
• When the battery operating time becomes extremely short, the battery has reached the end of
its service life.
To extend the battery operating time
Use the BIOS setup Power menu.
Conditions under which the battery operating time becomes shorter
• The battery operating time is influenced by the environmental temperature and the battery
operating time can be short at low temperature (5 C).
• If the battery is used for a considerably long time, it deteriorates in the charging capacity
and charging performance. When the internal battery falls into such the condition, replace it
with a new one.
Use the AC adaptor in the following cases
• When using the hard disk, CD-ROM or DVD-ROM, etc. frequently
• When using a LAN or a Modem
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