Dell Precision M90 - Using a Battery; Battery Performance; Checking the Battery Charge

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 Using a Battery
DellPrecision™M90User'sGuide
Battery Performance
Checking the Battery Charge
Conserving Battery Power
Power Management Modes
Configuring Power Management Settings
Charging the Battery
Replacing the Battery
Storing a Battery
Battery Performance
ForoptimalcomputerperformanceandtohelppreserveBIOSsettings,operateyourDell™portablecomputerwiththebatteryinstalledatalltimes.One
battery is supplied as standard equipment in the battery bay.
l Battery operating time varies depending on operating conditions. Operating time is significantly reduced when you perform operations including, but not
limited to, the following:
l Using optical drives
l Using wireless communications devices, ExpressCards, or USB devices
l Using high-brightness display settings, 3D screen savers, or other power-intensive programs such as complex 3D graphics applications
l Running the computer in maximum performance mode. See Configuring Power Management Settings for information about accessing Windows Power
Options Properties or Dell QuickSet, which you can use to configure power management settings.
You can check the battery charge before you insert the battery into the computer. You can also set power management options to alert you when the battery
charge is low. For more information, see Checking the Battery Charge.
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Checking the Battery Charge
The Dell QuickSet Battery Meter, the Microsoft Windows Power Meter window and icon, the battery charge gauge and health gauge, and the low-battery
warning provide information on the battery charge.
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Dell™QuickSetBatteryMeter
If Dell QuickSet is installed, press <Fn><F3> to display the QuickSet Battery Meter. The Battery Meter displays status, battery health, charge level, and charge
completion time for the battery in your computer.
For more information about QuickSet, right-click the icon in the taskbar, and click Help.
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NOTE: For information about the Dell warranty for your computer, see the Product Information Guide or separate paper warranty document that shipped
with your computer.
NOTE: Because the battery may not be fully charged, use the AC adapter to connect your new computer to an electrical outlet the first time you use the
computer. For best results, operate the computer with the AC adapter until the battery is fully charged. To view battery charge status, click Start®
Control Panel® Power Options, and click Power Meter tab.
NOTE: Battery operating time (the time the battery can operate the computer) decreases over time. Depending on how often the battery is used and
the conditions under which it is used, you may need to purchase a new battery during the life of your computer.
NOTE: It is recommended that you connect your computer to an electrical outlet when writing to a CD or DVD.
CAUTION: Using an incompatible battery may increase the risk of fire or explosion. Replace the battery only with a compatible battery purchased
from Dell. The battery is designed to work with your Dell computer. Do not use a battery from other computers with your computer.
CAUTION: Do not dispose of batteries with household waste. When your battery no longer holds a charge, call your local waste disposal or
environmental agency for advice on disposing of a lithium-ion battery. See "Battery Disposal" in the Product Information Guide.
CAUTION: Misuse of the battery may increase the risk of fire or chemical burn. Do not puncture, incinerate, disassemble, or expose the battery to
temperaturesabove65°C(149°F).Keepthebatteryawayfromchildren.Handledamagedorleakingbatterieswithextremecare.Damaged
batteries may leak and cause personal injury or equipment damage.
NOTE: Dell QuickSet may not be available on your computer.