Lithium ion Battery
Your LifeBook notebook has a Lithium ion battery that provides power for operating your notebook when no external power source is available. The battery is durable and long lasting, but should not be exposed to extreme temperatures, high voltages, chemicals or other hazards.
The Lithium ion battery operating time may become shorter if it is used under the following conditions:
■When used at temperatures that exceeds a low of 5°C or a high of 35°C. Extreme temperatures not only reduce charging efficiency, but can also cause battery deterioration. The Charging icon on the Status Indi- cator panel will flash when you try to charge a battery that is outside its operating temperature range.
(See Battery Charging Indicator on page 11 for more information)
■When using a high current device such as a modem,
Do not leave a faulty battery in your LifeBook notebook. It may damage your AC adapter, optional Auto/Airline adapter, another battery or your notebook itself. It may also prevent operation of your notebook by draining all available current into the bad battery.
■Actual battery life will vary based on screen brightness, applications, fea- tures, power management settings, bat- tery condition and other customer preferences.
■Under federal, state, or local law it may be illegal to dispose of batteries by put- ting them in the trash. Please take care of our environment and dispose of bat- teries properly. Check with your local government authority for details regard- ing recycling or disposing of old batter- ies. If you cannot find this information elsewhere, contact your support repre- sentative at
U s e r I n s t a l l a b l e F e a t u r e s
RECHARGING THE BATTERIES
If you want to know the condition of the primary Lithium ion battery, check the Battery Level indicator located on the Status Indicator panel. The indicator changes as the battery level changes.
The Lithium ion battery is recharged internally using the AC adapter or Auto/Airline adapter. To recharge the battery make sure the battery that needs to be charged is installed in your LifeBook notebook and connect the AC or Auto/Airline adapter.
Make sure that the Battery Charging indicator and the percentage charge is shown inside the Battery Level icon on the Status Indicator Panel.
There is no memory effect on the Lithium ion battery therefore you do not need to discharge the battery completely before recharging. The charge times will be significantly longer if your notebook is in use while the battery is charging. If you want to charge the battery more quickly, put your notebook into Sleep mode, or turn it off while the adapter is charging the battery. (See Power Management on page 25 for more information
on Sleep mode and shutdown procedure)
Using heavy current devices such as Modem or frequent
Low Battery State
When the battery is running low, a low battery notifica- tion message will appear. If you do not respond to the low battery message, the batteries will continue to discharge until they are too low to operate. When this happens, your notebook will go into Sleep mode. There is no guarantee that your data will be saved once the notebook reaches this point.
■Once the low battery notification mes- sage appears, you need to save all your active data and put your LifeBook note- book into Sleep mode until you can pro- vide a new power source. You should provide a charged battery, an AC power adapter, or Auto/Airline adapter as soon as possible.
■When you are in Sleep mode there must always be at least one power source active. If you remove all power sources while your LifeBook notebook is in Sleep mode, any data that has not been saved to the hard drive will be lost.
29