Conserving battery power, Storing a battery, Disposing of a used battery – HP EliteBook 8440p User Manual

Page 83: Replacing the battery

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5.

Click the plus sign next to Sleep, and then click the plus sign next to Hibernate after.

6.

Reenter the setting that you recorded for On battery.

7.

Click OK.

8.

Click Save changes.

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

fn+9

and

fn+10

hotkeys 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 one month or more.

Disposing of a used battery

WARNING!

To reduce the risk of fire or burns, do not disassemble, crush, or puncture; do not short

external contacts; do not dispose of in fire or water.

Refer to the Regulatory, Safety and Environmental Notices for battery disposal information.

Replacing the battery

Computer battery life varies, depending on the 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.

Using battery power

71

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