HP Pavilion dm1z-4300 CTO Notebook PC - Manual (Page 47)

● Disconnect unused external devices that are not plugged into an external power source, such as
an external hard drive connected to a USB port.
● Stop, disable, or remove any external media cards that you are not using.
● Before you leave your work, initiate Sleep or Hibernation, or shut down the computer.
Identifying low battery levels
When a battery that is the sole power source for the computer reaches a low or critical battery level,
the following behavior occurs:
● The battery light (select models only) indicates a low or critical battery level.
– or –
● The Power Meter icon on the Desktop shows a low or critical battery notification.
NOTE: For additional information about the power meter, see Using the power meter and
power settings on page 34 .
The computer takes the following actions for a critical battery level:
● If Hibernation is disabled and the computer is on or in the Sleep state, the computer remains
briefly in the Sleep state, and then shuts down and loses any unsaved information.
● If Hibernation is enabled and the computer is on or in the Sleep state, the computer initiates
Hibernation.
Resolving a low battery level
Resolving a low battery level when external power is available
● Connect an AC adapter.
● Connect an optional docking or expansion device.
● Connect an optional power adapter purchased as an accessory from HP.
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 user-replaceable battery with a charged battery, or connect the AC
adapter to the computer and to external power.
2. Exit Hibernation by pressing the power button.
Storing a user-replaceable 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 in a cool, dry place to prolong the battery charge.
Running on battery power 37