Toshiba portege m400 Manuale Utente

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User’s Manual
6-11
Power and Power-Up Modes
The Battery indicator may show a rapid decrease in battery operating time 
when you try to charge a battery under the following conditions:
The battery has not been used for a long time.
The battery has completely discharged and been left in the computer 
for a long time.
A cool battery is installed in a warm computer.
In such case, follow the steps below.
1. Fully discharge the battery by leaving it in the computer with the power 
on until the power automatically shuts off.
2. Connect the AC adaptor to the DC IN 15V jack of the computer, and the 
AC adaptor into power outlet.
3. Charge the battery until the Battery indicator glows green.
Repeat these steps two or three times until the battery recovers normal 
capacity.
Monitoring battery capacity
Remaining battery power can be monitored using the following methods.
Clicking the battery icon on the task bar
Via the Battery Status in the Windows Mobility Center window
You should wait at least 16 seconds after turning on the computer 
before trying to monitor the remaining operating time. This is because 
the computer needs this time to check the battery's remaining capacity 
and then calculate the remaining operating time, based on this together 
with the current power consumption.
Please be aware that the actual remaining operating time may differ 
slightly from the calculated time.
With repeated discharges and recharges, the battery's capacity will 
gradually decrease. In view of this it will be noted that an often used, 
older battery will not operate for as long as a new battery even when 
both are fully charged.