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User’s Manual 6-7
PORTÉGÉ M780
Charging the batteries
When the power in the battery pack becomes low, the Battery indicator will
flash orange to indicate that only a few minutes of battery power remain. If
you continue to use the computer while the Battery indicator flashes, the
computer will enable Hibernation Mode so that you do not lose any data,
and automatically turn itself off.
You must recharge a battery pack when it becomes discharged.
Procedures
To recharge a battery pack while it is installed in the computer, connect the
AC adaptor to the DC IN 15V jack and plug the other end into a working
outlet - the Battery indicator will glow orange while the battery is being
charged.
Time
The following table shows the approximate time required to fully charge a
discharged battery.
Charging time (hours)
■ Never remove the battery pack while the Wake-up on LAN function is
enabled. Data will be lost. Before you remove a battery pack, disable
the Wake-up on LAN function.
Use only the computer connected to an AC power source or optional
TOSHIBA Battery charger to charge the battery pack. Never attempt to
charge the battery pack with any other charger.
Battery type Power on Power off
Battery pack
(51Wh, 6 Cell)
about 3.0 to 12.0 About 3.0
Slice Expansion Battery
(44Wh, 6 Cell)
about 3.0 to 9.5 About 2.5
RTC battery 8.0 Doesn’t charge
Please be aware that the charging time when the computer is on is
affected by ambient temperature, the temperature of the computer and
how you are using the computer - if you make heavy use of external
devices for example, the battery might scarcely charge at all during
operation. Please refer to the section Maximizing battery operating time,
for further information.