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User’s Manual 6-7
TECRA A9, TECRA S5, Satellite Pro S200, Satellite Pro A150
Maximizing battery operating time
A battery’s usefulness depends on how long it can supply power on a
single charge, while how long the charge lasts in a battery depends on:
■ Processor speed
■ Screen brightness
■ Cooling method
■ System Sleep Mode
■ System Hibernation Mode
■ Display power off period
■ Hard disk drive power off period
■ How often and for how long you use the hard disk drive and external
disk(c) drives, for example, optical disc and floppy diskette drive.
■ How much charge the battery contained to begin with.
■ How you use optional devices, such as a PC Cards, to which the
battery supplies power.
■ Whether you enable Sleep Mode, which can conserve battery power if
you are frequently turning the computer off and on.
■ Where you store your programs and data.
■ Whether you close the display panel when you are not using the
keyboard - closing the display saves power.
■ The environmental temperature - operating time decreases at low
temperatures.
■ The condition of the battery terminals - you should always ensure the
terminals stay clean by wiping them with a clean dry cloth before
installing the battery pack.
Retaining data with power off
Refer to User Information Guide about Retaining time.