HP Pavilion dm4-1018tx Entertainment Notebook PC - Manual (Page 71)

Conserving battery power
● Select the Power saver power plan through Power Options under System and Security in
Windows Control Panel.
● Turn off wireless and local area network (LAN) connections and exit modem applications when
you are not using them.
● Disconnect external devices that are not plugged into an external power source, when you are
not using them.
● Stop, disable, or remove any external media cards that you are not using.
● Use the f2 and f3 action keys to adjust screen brightness as needed.
● If you leave your work, initiate Sleep or Hibernation, or shut down the computer.
Storing a battery
CAUTION: To prevent damage to a battery, do not expose it to high temperatures for extended
periods of time.
If a computer will be unused and unplugged from external power for more than 2 weeks, remove the
battery and store it separately.
To prolong the charge of a stored battery, place it in a cool, dry place.
NOTE: A stored battery should be checked every 6 months. If the capacity is less than 50 percent,
recharge the battery before returning it to storage.
Calibrate a battery before using it if it has been stored for 1 month or more.
Disposing of a used battery
WARNING! To reduce the risk of fire or burns, do not disassemble, crush, or puncture a battery;
short the external contacts on a battery; or dispose of a battery in fire or water. Do not expose a
battery to temperatures above 60˚C (140˚F). Replace the battery only with a battery approved for this
computer.
Refer to the Regulatory, Safety and Environmental Notices for battery disposal information.
Replacing the battery
Computer battery life varies, depending on power management settings, programs running on the
computer, display brightness, external devices connected to the computer, and other factors.
Battery Check notifies you to replace the battery when an internal cell is not charging properly, or
when the battery storage capacity has reached a “weak” condition. A message refers you to the
HP Web site for more information about ordering a replacement battery. If the battery is possibly
covered by an HP warranty, instructions include a warranty ID.
NOTE: To ensure that you always have battery power when you need it, HP recommends
purchasing a new battery when the storage capacity indicator turns green-yellow.
Switching between graphics modes (select models only)
The computer is equipped with switchable graphics and has two modes for processing graphics.
When switching from AC power to battery power, the computer switches from high-performance
Switching between graphics modes (select models only) 61