Dell Inspiron 3800 System Reference Manual page 119

Power Sources: Dell Inspiron 3800 System Reference
NOTES: This computer is supplied with a lithium-ion or a nickel-metal hydride battery, which is significantly less hazardous to the
environment than the lithium metal technology used in some other batteries (such as watch batteries).
Lithium-ion and nickel-metal hydride batteries are longer lived than conventional batteries and do not require replacement as often. Do
not dispose of these batteries along with common household waste. Contact local authorities for the location of a chemical waste
collection program nearest you. To purchase a new battery, call Dell or access the Dell World Wide Web site at http://www.dell.com.
About Battery Power
You automatically conserve battery power each time you attach the computer to an electrical outlet. The battery is even being recharged when you use AC
power. The battery's life expectancy is largely determined by the number of charges it receives, so use an electrical outlet to run the computer whenever
possible.
You can customize power management by individually controlling the computer's power conservation features. These features reduce power consumption by
monitoring application programs and computer devices for inactivity and slowing down or stopping some of the computer's internal devices.
NOTES: When you use power conservation features, you often trade some of the performance of the computer for increased battery
operating time. For example, if you turn off the hard-disk drive, you may experience a delay the next time the computer tries to access
the hard-disk drive.
Other power conservation features, such as standby mode, stop almost all system activity. They allow you to maximize power
conservation when your work is interrupted.
Experiment with power conservation features to achieve the optimum power conservation for your work environment.
Turning the Computer On
To turn on the computer, press the power button.
NOTE: If your computer's operating system is "locked up"—that is, it does not respond to commands—press and hold down the power
button for at least 5 seconds to turn it off.
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