HP 15-d099nr TouchSmart Notebook PC - Manual (Page 31)

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 power management settings, programs running on the
computer, screen brightness, external devices connected to the computer, and other factors.
You can find details about the battery by clicking the Battery menu icon at the right of the top panel.
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.
Using external AC power
NOTE: For information on connecting to AC power, refer to the Setup Instructions poster provided in
the computer box.
The computer does not use battery power when the computer is connected to AC external power with
an approved AC adapter or an optional docking/expansion device.
WARNING! To reduce potential safety issues, use only the AC adapter provided with the computer,
a replacement AC adapter provided by HP, or a compatible AC adapter purchased from HP.
Connect the computer to external AC power under any of the following conditions:
WARNING! Do not charge the battery while you are aboard aircraft.
● When you are charging or calibrating a battery
● When you are installing or modifying system software
● When writing information to a disc (select models only)
● When performing a backup or recovery
When you connect the computer to external AC power, the following events occur:
● The battery begins to charge.
● If the computer is turned on, the Battery menu icon in the top panel changes appearance.
When you disconnect external AC power, the following events occur:
● The computer switches to battery power.
● The screen brightness is automatically decreased to save battery life.
Using external AC power 23