Toshiba Satellite C640 Manuale Utente Scaricare il pdf (Pagina 113)

User’s Manual 6-8

Power and Power-up Modes

■ 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. Plug in the AC adaptor.

3. Charge the battery until the DC IN/Battery indicator glows green.

Repeat the steps two or three times until the battery recovers normal

capacity.

Monitoring Battery Capacity

Remaining battery power can be monitored in Power Options.

■ Clicking the battery icon on the Taskbar

Maximizing Battery Operating Time

A battery’s usefulness depends on how long it can supply power on a

single charge.

How long the charge lasts in a battery depends on:

■ How you configure the computer (for example, whether you enable

battery-power saving options). The computer provides a battery save

mode, which can be set in Power Options, to conserve battery power.

This mode has the following options:

■ CPU Precessing speed

■ Screen brightness

■ Cooling Method

■ System sleep

■ System hibernation

Leaving the AC adaptor connected will shorten battery life. At least once a

month, run the computer on battery power until the battery is fully

discharged, then recharged the battery.

■ 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.

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Toshiba Satellite C640 Manuale Utente Pagina 113