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Mobile Computing
Running the computer on battery power

Battery Notice

Battery life rating is for comparison purposes only, and does
not indicate the battery life that will be obtained by any
individual user. Actual battery life may vary considerably
from specifications depending on product model,
configuration, applications, power management settings and
features utilized, as well as the natural performance
variations produced by the design of individual components.
The battery life rating is only achieved on the select models
and configurations tested by Toshiba under the specific test
settings at the time of publication and is not an estimate of a
system’s battery life under any conditions other than the
specific test settings.
Recharge time varies depending on usage. Battery may not
charge while the computer is consuming full power. After a
period of time, the battery will lose its ability to perform at
maximum capacity and will need to be replaced. This is
normal for all batteries.
To ensure that the battery maintains its maximum capacity,
operate the computer on battery power at least once a
month. The Lithium-Ion battery has no memory effect so it is
not necessary to let the battery fully discharge each time.
However, for better accuracy of the battery meter, it is helpful
to fully discharge the battery periodically. Please see
“Maintaining your battery” on page 87 for procedures. If the
computer is continuously operated on AC power, either
through an AC adaptor or a port replicator (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 may cause the battery meter to be
inaccurate.
For best performance when playing streaming media
(especially streaming video), either power the computer
from its AC adaptor, or set up a power plan that keeps
the computer running at full performance even when
powered from its battery. For more information about
Windows® power plans, see “Power Plans” on page 84.
The computer also has an internal real-time-clock (RTC)
battery.
NOTE