Resolving A Low Battery Level; Resolving A Low Battery Level When External Power Is Available; Resolving A Low Battery Level When A Charged Battery Is Available; Resolving A Low Battery Level When No Power Source Is Available - HP ProBook 4440s User Manual

Resolving a low battery level

Resolving a low battery level when external power is available

Connect one of the following devices:
▲
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AC adapter
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Optional docking or expansion device
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Optional power adapter purchased as an accessory from HP

Resolving a low battery level when a charged battery is available

1. Turn off the computer or initiate Hibernation.
2. Replace the discharged battery with a charged battery.
3. Turn on the computer.

Resolving a low battery level when no power source is available

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Initiate Hibernation.
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Save your work and shut down the computer.

Resolving a low battery level when the computer cannot exit Hibernation

When the computer lacks sufficient power to exit Hibernation, follow these steps:
1. Replace the discharged battery with a charged battery, or connect the AC adapter to the
computer and to external power.
2. Exit Hibernation by briefly pressing the power button.

Conserving battery power

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Turn off wireless and local area network (LAN) connections and exit modem applications when
you are not using them.
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Disconnect unused external devices that are not plugged into an external power source.
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Stop, disable, or remove any external media cards that you are not using.
●
Decrease brightness.
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Initiate Suspend or Hibernation, or shut down when you are not using the computer.

Storing a battery

CAUTION:
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.
46 Chapter 6 Power management
To reduce the risk of damage to a battery, do not expose it to high temperatures for