HP Compaq Presario,Presario 1700 Supplementary Manual page 93

Battery charging time will vary based on the initial battery
charge, the type of battery, and the activity of your Notebook
while charging.
Over time, all batteries lose the ability to operate at full capacity
and the battery will have to be replaced. To purchase a new
battery, contact your Compaq-authorized dealer or access the
Compaq Web site at: www.compaq.com/athome.
The battery operating time depends on your power management
settings. Your Notebook components, the options, and the
applications that you use also affect the operating time. This
section shows you how to increase the length of time you are
able to operate under battery power.
The display, processor, CD/DVD drive, and hard drive use the
most battery power. To maximize the battery operating time,
perform one or more of the following actions:
• Reduce display brightness and select a short wait for your
screen saver.
• Select a screen saver that does not generate a lot of graphics
or motion.
• Reduce audio volume or use headphones.
• Exit modem programs when you are not using them.
• Remove PC Cards when you are not using them.
•
Remove CDs or DVDs when you are not using them.
• Use Sleep or Hibernation mode to turn off your Notebook
when you are not using it.