Toshiba Satellite C640 - Manual (Page 109)

User’s Manual 6-7
Satellite C600/C640/C645/C600D/C640D/C645D, Satellite Pro C600/C640/C600D/C640D
Extending battery life
To maximize the life of your battery packs:
■
At least once a month, disconnect the computer from a power source
and operate it on battery power until the battery pack fully discharges.
Before doing so, follow the steps as detailed below.
■
If you have extra battery packs, rotate their use.
■
If you will not be using the system for an extended period, for example
for more than one month, remove the battery pack from the computer.
■
Store spare battery packs in a cool dry place out of direct sunlight.
Replacing the battery pack
Please be aware that the battery pack is classified as a consumable item.
The operating life of the battery pack will gradually reduce through
repeated charging and discharging, and will need to be replaced when it
reaches the end of its operating life. In addition to this, you might also
replace a discharged battery pack with a charged spare when you are
operating your computer away from an AC power source for an extended
period of time.
This section explains how to remove and install the battery pack, and
begins with the removal process which is detailed through the following
steps.
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 blinks or there is some other
warning to indicate a low battery condition, go to Step 4.
4. Connect the AC adaptor to the DC IN 19V jack of the computer, and
to a wall outlet that is supplying power.
5. Charge the battery pack until the DC IN/Battery indicator glows
green.
■
Do not remove the battery pack while the computer is in Sleep Mode.
Data is stored in RAM, so if the computer loses power it could be lost.
■
In Hibernation Mode, data will be lost if you remove the battery pack or
disconnect the AC adaptor before the save is completed.
■
Do not touch the battery release latch while holding the computer or the
battery pack might fall out due to the unintentional release of the
battery release latch and cause injuries.