FUJITSU LIFEBOOK 990TX2 - Manual (Page 38)

S e c t i o n T w o
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they were installed and/or the AC or auto/
airline adapter was connected.
There is no memory effect on the Lithium ion
batteries, which means that you do not ne ed to
discharge them completely before recharging. A
single fully discharged Lithium ion battery will
charge in approximately three (3) hours when
your notebook is Off or in Suspend mode. The
charging time from fully discharged for two
Lithium ion batteries together, is approximately
5 hours when your notebook is Off or in
Suspend mode.Of course partially charged bat-
teries will not take as long to charge. The charge
times will be significantly longer if your note-
book is in use while the batteries are charging
(from approximately nine (9) hours for one
battery to approximately 15 hours for two
batteries with normal operating levels).
C A U T I O N
Using heavy current devices such as LAN
cards or frequent CD-ROM accesses may
prevent charging completely.
C A U T I O N
You may not be able to hear the audio
alarms if the volume control is set too
low or is turned off by either hardware or
software but you will still be able to see
the Battery Level indicator(s) flash.
Low Battery State
When the battery is running low, your note-
book beeps about every 15 seconds and the
Battery Level indicator(s) flash. If you do not
respond to the low battery alarm,the batteries
will continue to discharge until they are too low
to operate. When this happens there will be a
multiple beep alarm,the Battery Level indicator
will show dead battery, and your notebook will
go into Suspend mode to try and protect your
data as long as possible. Your power manage-
ment settings do not affect whether the dead
battery alarm level will send your notebook into
Suspend mode, it will not go to Save-to-Disk
mode. (Figure 2-3 on page 19.)
When the low battery alarm occurs you need to
save all your active data and put your notebook
into Suspend mode until you can provide a new
power source. You should provide this power as
soon as possible. The new power source can be
a charged battery or a power adapter, either AC
or auto/airline.