Operation Manual

Maximizing battery operating time
The usefulness of a battery depends on how long it can supply power on a
single charge, while how long the charge lasts in a battery depends on:
Processor speed
Screen brightness
System Sleep Mode
System Hibernation Mode
Display power off period
How often and for how long you use the internal storage and external
disk drives, for example, optical disc
How much charge the battery contained to begin with
How you use optional devices, such as a USB device, to which the
battery supplies power
Whether you enable Sleep Mode, which can conserve battery power if
you are frequently turning the computer off and on
Where you store your programs and data
Whether you close the display panel when you are not using the
keyboard - closing the display saves power.
The environmental temperature - operating time decreases at low
temperatures.
Batteries exhausted time
When you turn off the power of your computer with batteries fully charged,
the batteries exhaust within the following approximate period.
Battery type Sleep Mode Shut Down Mode
Battery pack (28 Wh, 2
cell)
about 2.5 days about 98 days
Extending battery life
To maximize the life of your battery packs, do the following at least once a
month.
1. Turn off the computer's power.
2. Disconnect the AC adaptor and turn on the computer's power. If it
does not turn on then go to Step 4.
3. Operate the computer on battery power for five minutes. If you find
that the battery pack has at least five minutes of operating time,
continue operating until the battery pack is fully discharged. However,
if the DC IN/Battery indicator flashes or there is some other warning to
indicate a low battery condition, go to Step 4.
User's Manual 4-9