HP ProBook 440 G0 Notebook PC - Manual (Page 44)

Resolving a low battery level
Resolving a low battery level when external power is available
▲ Connect the computer to external power using one of the following devices:
● AC adapter
● Optional docking or expansion device
● 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
● Initiate Hibernation.
● 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
● Turn off wireless and local area network (LAN) connections and exit modem applications when
you are not using them.
● Disconnect unused external devices that are not plugged into an external power source.
● Stop, disable, or remove any external media cards that you are not using.
● Decrease display brightness.
● Initiate Suspend or Hibernation, or shut down the computer when you are not using it.
Storing a battery
CAUTION: To reduce the risk of 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.
34 Chapter 6 Power management