Fujitsu Lifebook L470, Manual

Page: 51 / 204

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U s i n g Y o u r L i f e B o o k L S e r i e s
L i f e B o o k L S e r i e s f r o m F u j i t s u
37
When two Lithium ion batteries are installed,
the charge/discharge rate of the primary and
optional second Lithium ion batteries are the
same, as they are connected in parallel and are
both charging and/or discharging at the same
time. Since the rates are the same, one may
finish charging or discharging before the other
if they were not at the same charge level when
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 need
to discharge them completely before rechar-
ging. A single fully discharged Lithium ion
battery will charge in approximately four (4)
hours when your notebook is Off or in
Suspend mode. The charging time from fully
discharged for two Lithium ion batteries
together, is approximately five (5) hours
when your notebook is Off or in Suspend
mode. Of course partially charged batteries
will not take as long to charge. The charge times
will be significantly longer if your notebook is
in use while the batteries are charging (from
Recharging the Batteries
If you want to check the condition of either
the primary Lithium ion battery or an optional
second Lithium ion battery, check the Battery
Level indicators located on the Status Indicator
panel. These indicators change as the battery
levels change. Battery 1 is a Lithium ion battery
which is installed in your notebook and Battery
2 is a Lithium ion battery which is installed in
the Optional Detachable Bay or Mobile LAN
Dock. (Figure 3-1 on page 26.)
The Lithium ion batteries are recharged inter-
nally using the AC adapter or auto/airline
adapter. To recharge a battery:
■
Make sure the battery to be charged is
installed in your notebook, the Optional
Detachable Bay or the Mobile LAN Dock and
connect the AC or auto/airline adapter.
■
Make sure that the Battery Charging indica-
tor to the left of the Battery Level indicator
of the battery to be charged is visible on the
Status Indicator panel.
■
Make sure the charge level is shown inside the
Battery Level icon. (Figure 3-1 on page 26.)
approximately ten (10) hours for one battery to
approximately eleven (11) 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/DVD access-
es may prevent charging completely.
P O I N T
You may use your Mobile LAN Dock as
a battery charging station for the optional
Second Lithium ion Battery when the
notebook is not docked in the Mobile LAN
Dock (The Mobile LAN Dock must be con-
nected to an AC or Auto/Airline Adapter).
Consult the Recharging the Batteries sec-
tion above for more information. You can-
not use the optional Optional Detachable
Bay as a battery charging station since it
does not have a seperate power source.