Retaining Data With Power Off; Extending Battery Life - Toshiba Portege M400 User Manual

Power and Power-Up Modes
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How often and how long you use the hard disk, optical disc and the
floppy disk drive.
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How much charge the battery contained to begin with.
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How you use optional devices, such as a PC card, to which the battery
supplies power.
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Enabling Standby Mode conserves battery power if you are frequently
turning the computer off and on.
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Where you store your programs and data.
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Closing the LCD display panel when you are not using the keyboard
saves power.
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Operating time decreases at low temperatures.
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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:
Battery type
Battery pack (4700mAh)
Slice Expansion Battery (4000mAh)
RTC battery

Extending battery life

To maximize the life of your battery pack:
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At least once a month, disconnect the computer from a power source
and operate it on battery power until the battery pack fully discharges.
Before doing so, follow the steps below.
1. Turn off the computer's power.
2. Disconnect the AC adaptor and turn on the computer's power. If it
6-12
Cooling Method
System standby
System Hibernation
Monitor Power off
HDD Power off
Retention time
does not turn on go to step 4.
State and Retention Time
about 6 days (Standby Mode)
about 70 days (Boot mode)
about 5 days (Standby Mode)
about 60 days (Boot mode)
30 days
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