User's Manual

49
Battery Pack
The battery pack is the internal power source for the computer. It is rechargeable
using the AC adapter.
The operating time of a fully charged battery pack depends on how you are using
the computer. When your applications often access peripherals, you will experience
a shorter operating time.
NOTE: Care and maintenance information for the battery is
provided in the “Battery Pack Guidelines” section in Chapter
7.
Charging the Battery Pack
NOTE:
 Charging will not start if the internal temperature of the
battery pack is below 0 C (32 F) or above 50 C (122 F);
the charging process will stop if the internal temperature
of the battery pack gets above 60 C (140 F). To avoid
damaging the battery under this situation, disconnect the
AC adapter and wait for the battery to return to room
temperature before charging again.
 During charging, do not disconnect the AC adapter before the
battery has been fully charged; otherwise you will get a
prematurely charged battery.
 The battery has a high temperature protection mechanism
which limits the maximum charge of the battery to 80% of its
total capacity in the event of high temperature conditions.
In such conditions, the battery will be regarded as fully
charged at 80% capacity.
 The battery level may automatically lessen due to the
self-discharge process (0.21 % per day), even when the
battery pack is fully charged (100 %). This happens no matter
if the battery pack is installed in the computer.
To charge the battery pack, connect the AC adapter to the computer and an electrical
outlet. The Battery Indicator ( ) on the computer glows amber to indicate
that charging is in progress.