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Fujitsu Lifebook U939X - Battery Management and Energy Saving

Fujitsu Lifebook U939X
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Working w ith the notebook
Rechargeable battery
BatteryBatteryServicelife,batteryRechargeablebatteryBattery
During mobile use, the notebook runs on its built-in battery. You can increase the
service life of the battery by caring for the battery properly. The average battery
service life is around 800 charge/discharge cycles.
You can extend the battery service life by taking advantage of the available energy saving functions.
Charging, caring for and maintaining the battery
BatteryBattery
The rechargeable battery on the Notebook can only be charged if the ambient
temperature is between 5°C / 41°F and max. 35°C / 95°F.
You can charge the battery by connecting the notebook to the AC adapter
(see "
Connecting the AC adapter", Page 21).
Note that the rechargeable battery is not ch arged if it has a charge status of between 90%
and 100%. If the rechargeable batte ry charge level is below 90% and if the mains adapter
is connected, the rechargeable battery will be charged up to 100%.
If the battery is running low you will hear a warning alarm. If you do not connect the AC adapter
within ve minutes of the warning alarm described above, your no tebook will automatically switch off.
Monitoring the battery state of charge
Batterybatterychargemeter
Windows also has a "Battery charge meter" in the taskbar for monitoring the
battery capacity. When you place the mouse pointer on the battery symbol, the
system displays the state of charge of the battery.
50 Fujitsu

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