Toshiba Satellite U840 PSU4WC Users Manual Canada; English - Page 85

Batteries exhausted time, Extending battery life, Battery type, Sleep Mode, Shut Down Mode

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Satellite U840/U800 Series 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. Whether you enable Sleep and Charge function. Batteries exhausted time When you turn off the power of your computer with batteries fully charged, the batteries will be exhausted within the following approximate period. Battery type Sleep Mode Shut Down Mode Battery pack (54Wh, 6 cell) 4.5 days 102 days RTC battery about 30 days about 30 days Extending battery life To maximize the life of your battery packs: 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 as detailed below. 1. Turn off the computer's power. 2. Disconnect the AC adaptor and turn on the computer's power - if it does not turn on then go to Step 4. 3. Operate the computer on battery power for five minutes. If you find that the battery pack has at least five minutes of operating time, continue operating until the battery pack is fully discharged, however, if the DC IN/Battery indicator flashes or there is some other warning to indicate a low battery condition, go to Step 4. 4. Connect the AC adaptor to the DC IN 19V jack of the computer, and to a wall outlet that is supplying power. The DC IN/Battery indicator should glow white to indicate that the battery pack is being charged, however, in the event that DC IN/Battery indicator does not glow this indicates that power is not being supplied - check the connections for the AC adaptor and the power cord. 5. Charge the battery pack until the DC IN/Battery indicator glows white. User's Manual 5-6

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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.
Whether you enable Sleep and Charge function.
Batteries exhausted time
When you turn off the power of your computer with batteries fully charged,
the batteries will be exhausted within the following approximate period.
Battery type
Sleep Mode
Shut Down Mode
Battery pack
(54Wh, 6 cell)
4.5 days
102 days
RTC battery
about 30 days
about 30 days
Extending battery life
To maximize the life of your battery packs:
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 as detailed below.
1. Turn off the computer's power.
2. Disconnect the AC adaptor and turn on the computer's power - if it
does not turn on then go to Step 4.
3. Operate the computer on battery power for five minutes. If you find
that the battery pack has at least five minutes of operating time,
continue operating until the battery pack is fully discharged, however, if
the
DC IN/Battery
indicator flashes or there is some other warning to
indicate a low battery condition, go to Step 4.
4. Connect the AC adaptor to the DC IN 19V jack of the computer, and
to a wall outlet that is supplying power. The
DC IN/Battery
indicator
should glow white to indicate that the battery pack is being charged,
however, in the event that
DC IN/Battery
indicator does not glow this
indicates that power is not being supplied - check the connections for
the AC adaptor and the power cord.
5. Charge the battery pack until the
DC IN/Battery
indicator glows
white.
Satellite U840/U800 Series
User's Manual
5-6