100
Mobile Computing
Running the computer on battery power
5.375 x 8.375 ver 2.3
Running the computer on battery power
The computer contains a removable Lithium-Ion (Li-ion)
battery pack that provides power when you are away from an
AC outlet. This is the main battery. You can recharge it many
times.
TECHNICAL NOTE: For optimum DVD performance, always
play DVDs while your computer is connected to AC power.
Battery Notice
To ensure that the battery maintains its maximum capacity,
operate the computer on battery power at least once a month
until the battery is fully discharged. Please see “Maximizing
battery life” on page 101 for procedures. If the computer is
continuously operated on AC power, either through an AC
adapter or a docking station (if applicable to your system), for
an extended period (more than a month), the battery may fail
to retain a charge. This may shorten the life of the battery, and
the battery light may not indicate a low-battery condition.
The RTC battery powers the RTC memory that stores your
system configuration settings and the current time and date
information. It maintains this information for up to a month
while the computer is turned off.
TECHNICAL NOTE: The RTC battery does not charge while the
computer is turned off, even when AC power is attached.
Charging the battery
To charge the main battery while it is in your computer, plug
the computer into a live electrical outlet. The battery charges
whether the computer is on or off.
