DELL Vostro 2420

Hi BR/Mani,

Congratulations for your new computer.

Battery backup depends on the usage of the computer.

Here are the few factors which may affect battery performance:

• Processor speed - Enabling features such as Intel Speed Step or AMD Power Now! Extends battery life by automatically adjusting the processor speed to meet system demands. These features are typically enabled by default on computers that support them.
• CD, DVD, CD-RW and hard drive access frequency - Moving files and programs directly to the hard drive, when possible, reduces the number of devices requiring battery power. Adding more memory can also help by reducing the need to use a swap file on the hard drive.
• Programs - Running only the programs that are necessary reduces demands on the system processor and memory. Programs that cause intensive use of the processor and drives (such as playing a DVD movie or 3D games) can more than halve the amount of time that the computer can be used on battery power.
• LCD brightness - Lowering the brightness of the LCD screen reduces the amount of power required by the screen. To adjust the brightness of the LCD screen, press + to increase the brightness or + to decrease the brightness on the LCD display panel.
• Backlit keyboard - Turning off or halfing the brightness of your backlit keyboard can conserve battery power for when you are using your computer. Typically to adjust the brightness of the backlit keyboard, press + to cycle through two brightness settings and the offsetting.
• Power management - Set the computer to enter suspend or hibernate when idle to conserve battery power when the computer is not being used.
• Battery age - A battery's average life expectancy is 1 year. After this time, it is normal to experience a decrease in battery life.
• Battery age/life is in no way shortened, when the portable computer is directly connected to AC Power (power outlet) and continuously used for long period of time. The reason is that the system motherboard automatically stops power flow to battery, as soon the battery is fully charged.

You can improve the battery performance by:

• Using the computer while connected to an electrical outlet when possible. Battery life reduces with the number of times the battery is discharged and recharged.
• Configuring the power management settings using Microsoft Windows Power Options to optimize your computer's power usage (see Power Management).
• Using the Sleep power state when you leave the computer unattended for long periods of time.
• The life of the battery 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.

For more information on battery usage and tips check this FAQ link:

http://dell.to/iQsukS

Please reply if you have any further questions.