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Use Hibernate and Standby to Conserve Batteries

The Hibernate function in Windows XP Professional can make the batteries in your laptop computer last longer.

Windows XP supports the industry standard power management technology known as the Advanced Configuration and Power Interface (ACPI), which enables the operating system to control power to your computer and peripheral devices. The power management features in Windows XP include Hibernate and Standby. Hibernate saves an image of your desktop with all open files and documents, and then it powers down your computer. When you turn on power, your files and documents are open on your desktop exactly as you left them. Standby reduces the power consumption of your computer by cutting power to hardware components you are not using. Standby can cut power to peripheral devices, your monitor, even your hard drive, but maintains power to your computer’s memory so you don’t lose your work.

Power Management Performance

Windows XP wakes from Hibernate faster than any earlier version of Windows. So you can preserve your batteries without taking time to close all your files and shut down, and then restart and open all your files when you’re ready to work again. If you need to leave your computer, you can just leave it. Windows XP can automatically put your computer into Hibernate mode after a specified period of inactivity. Or Windows XP can detect when your batteries are running low, and then automatically put your computer in Hibernate mode to save your work before the battery fails. To put your computer into hibernation, you must have a computer that is set up by the manufacturer to support this option.

To automatically put your computer into hibernation

You must be logged on to your computer with an owner account in order to complete this procedure.
1. Open Power Options in Control Panel. (Click Start, click Control Panel, and then double-click Power Options.)

2. Click the Hibernate tab, select the Enable hibernate support check box, and then click Apply.

If the Hibernate tab is unavailable, your computer does not support this feature.

Power options


3. Click the APM tab, click Enable Advanced Power Management support, and then click Apply.

The APM tab is unavailable on ACPI–compliant computers. ACPI automatically enables Advanced Power Management, which disables the APM tab.

4. Click the Power Schemes tab, and then select a time period in System hibernates. Your computer hibernates after it has been idle for the specified amount of time.

To manually put your computer into hibernation

You must be logged on as an administrator or a member of either the Administrators or Power Users group in order to complete this procedure. If your computer is connected to a network, network policy settings might also prevent you from completing this procedure.
1. Open Power Options in Control Panel. (Click Start, click Control Panel, and then double-click Power Options.)

2. Click the Hibernate tab, and then select the Enable hibernate support check box.

If the Hibernate tab is not available, your computer does not support this feature.
3. Click OK to close the Power Options dialog box.

4. Click Start, and then click Shut Down. In the What do you want the computer to do drop-down list, click Hibernate.

If you are using Windows XP Home Edition, or Windows XP Professional with Fast User Switching turned on, the Shut Down menu will present the options to Stand By, Turn Off, or Restart your computer. Hold down the Shift key, and the Stand By button will change to Hibernate.

Yes these options are specially build for laptop and help in saving a lot of batteries.

i dont think so.according to me u have to keep your system active for downloading.