Dell XPS M2010, Руководство пользователя, Страница: 63 / 192

Using a Battery
63
Low-Battery Warning
NOTICE:
To avoid losing or corrupting data, save your work immediately after a low-battery warning. Then
connect the computer to an electrical outlet. If the battery runs completely out of power, hibernate mode begins
automatically.
A pop-up window warns you when the battery charge is approximately 90 percent depleted. The
computer enters hibernate mode when the battery charge is at a critically low level.
You can change the settings for the battery alarms in QuickSet or the Power Options Properties window.
See "Configuring Power Management Settings" on page 65 for information about accessing QuickSet or
the
Power Options Properties window.
Charging the Battery
NOTE:
When the computer is turned off, the AC adapter charges a completely discharged battery to 80 percent in
about 90 minutes. Full battery charge time will be longer. Charge time is longer with the computer turned on. You
can leave the battery in the computer for as long as you like. The battery’s internal circuitry prevents the battery
from overcharging.
When you connect the computer to an electrical outlet or install a battery while the computer is
connected to an electrical outlet, the computer checks the battery charge and temperature. If necessary,
the AC adapter then charges the battery and maintains the battery charge.
If the battery is hot from being used in your computer or being in a hot environment, the battery may
not charge when you connect the computer to an electrical outlet.
The battery is too hot to start charging if the light flashes alternately blue and orange. Disconnect
the computer from the electrical outlet and allow the computer and the battery to cool to room
temperature. Then connect the computer to an electrical outlet to continue charging the battery.
For more information about resolving problems with a battery, see "Power Problems" on page 106.
Conserving Battery Power
Perform the following actions to conserve battery power:
• Connect the computer to an electrical outlet when possible because battery life is largely determined
by the number of times the battery is used and recharged.
• Place the computer in standby mode or hibernate mode when you leave the computer unattended for
long periods of time. See "Power Management Modes" on page 64.
• Use the Power Management Wizard or the Power Options Properties window to select options to
optimize your computer’s power usage. These options can also be set to change when you press the
power button, close the display, or press <Fn><Esc>.
NOTE:
See "Configuring Power Management Settings" on page 65 for information on conserving battery power.