Fujitsu Lifebook B112, User Manual, Page: 45 / 174

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U s i n g Y o u r L i f e B o o k B 1 1 2
L i f e B o o k B 1 1 2 f r o m F u j i t s u
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Consult the documentation that comes with the
optional external battery charger for instruc-
tions on using it to charge batteries.
There is no memory effect on the Lithium ion
batteries, which means that you do not need to
discharge them completely before recharging.
A single fully discharged Lithium ion battery
will charge in approximately 3 hours when
your notebook is Off or in Suspend mode.
Of course partially charged batteries will not
take as long to charge. The charge time will be
significantly longer if your notebook is in use
while the batteries are charging (approximately
eight (8) hours for one battery 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.
Low Battery State
When the battery is running low, your note-
book beeps about every 15 seconds and the
Battery Level indicator flashes. If you do not
respond to the low battery alarm, the battery
will continue to discharge until it is too low to
operate. When this happens there will be a mul-
tiple 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 management
settings do not affect what happens at the dead
battery alarm level. Your notebook will go to
Suspend mode. (Figure 3-1 on page 20.)
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 flash.
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.
C A U T I O N
When you are in Suspend mode there
must always be at least one power source
active. If you turn off the power with
the power switch, or remove all power
sources, battery, AC adapter or auto/
airline adapter, while your notebook is in
Suspend mode any data which has not
been saved to the hard drive will be lost.