Toshiba M40 User Guide

User’s Manual

6-9

Power and Power-Up Modes

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 TOSHIBA Power Saver, to conserve battery 

power. This mode has the following options:

■

CPU Precessing speed

■

Screen brightness

■

Cooling Method

■

System standby

■

System Hibernation

■

Monitor Power off

■

HDD Power off

■

How often and how long you use the hard disk, CD/DVD-ROM drive 

and the diskette drive.

■

How much charge the battery contained to begin with.

■

How you use optional devices, such as a PC Card, to which the battery 

supplies power.

■

Enabling Resume mode conserves battery power if you are frequently 

turning the computer off and on.

■

Where you store your programs and data. 

■

Closing the display when you are not using the keyboard saves power.

■

Operating time decreases at low temperatures.

■

The condition of the battery terminals. Make sure the battery terminals 

stay clean by wiping them with a clean dry cloth before installing the 

battery pack.

Retaining data with power off

When you turn off your computer with fully charged batteries, the batteries 

retain data for the following approximate time periods:

about 2 days (Standby mode)

about 30 days (Shutdown mode)

about 4 days (Standby mode)

about 60 days (Shutdown mode)

about 2 months