Dell Precision M65 User Manual download pdf (Page 12)

Microsoft®Windows®Power Meter

The Windows Power Meter indicates the remaining battery charge. To check the Power Meter, double-click the icon on the taskbar.

If the computer is connected to an electrical outlet, a icon appears.



Charge Gauge

By either pressing once or pressing and holding the status button on the charge gauge on the battery, you can check:

l Battery charge (check by pressing and releasing the status button)

l Battery health (check by pressing and holding the status button)

The battery operating time is largely determined by the number of times it is charged. After hundreds of charge and discharge cycles, batteries lose some

charge capacity—or battery health. That is, a battery can show a status of "charged" but maintain a reduced charge capacity (health).



Check the Battery Charge

To check the battery charge, press and release the status button on the battery charge gauge to illuminate the charge-level lights. Each light represents

approximately 20 percent of the total battery charge. For example, if the battery has 80 percent of its charge remaining, four of the lights are on. If no lights

appear, the battery has no charge.



Check the Battery Health

To check the battery health using the charge gauge, press and holdthestatusbuttononthebatterychargegaugeforatleast3seconds.Ifnolightsappear,

the battery is in good condition, and more than 80 percent of its original charge capacity remains. Each light represents incremental degradation. If five lights

appear,lessthan60percentofthechargecapacityremains,andyoushouldconsiderreplacingthebattery.SeeSpecifications for more information about the

battery operating time.



Low-Battery Warning

By default, a pop-up window warns you when the battery charge is approximately 90 percent depleted. You can change the settings for the battery alarms in

QuickSet or the Power Options Properties window. See Configuring Power Management Settings for information about accessing QuickSet or the Power

Options Properties window.

Conserving Battery Power

Perform the following actions to conserve battery power:

l 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.

l Place the computer in standby mode or hibernate mode when you leave the computer unattended for long periods of time (see Power Management

Modes).

l Use the Power Management Wizard 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>.

Power Management Modes



Standby Mode

Standby mode conserves power by turning off the display and the hard drive after a predetermined period of inactivity (a time-out). When the computer exits

standby mode, it returns to the same operating state it was in before entering standby mode.

NOTE: You can check battery health in one of two ways: by using the charge gauge on the battery as described below and by using the Battery Meter

in Dell QuickSet. For information about QuickSet, right-click the icon in the taskbar, and click Help.

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.

NOTE: See Power Management Modes for more information on conserving battery power.

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Dell Precision M65 User Manual Page 12

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