Resolving a low battery level, Conserving battery power, Disposing of a battery – HP EliteBook 840 G3 User Manual
Page 48: Replacing a battery, Using external ac power
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The Power meter icon
shows a low or critical battery notification.
If 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.
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 no power source is available
To resolve a low battery level when no power source is available, save your work and shut down the
computer.
Conserving battery power
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Type power options in the taskbar search box, and then select Power Options.
‒ or –
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Select low power-use settings through Power Options.
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Turn off wireless and 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 memory cards that you are not using.
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Decrease screen brightness.
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Before you leave your work, initiate Sleep, or shut down the computer.
Disposing of a battery
When a battery has reached the end of its useful life, do not dispose of the battery in general household
waste. Follow the local laws and regulations in your area for battery disposal.
Replacing a battery
The battery(ies) in this product cannot be easily replaced by users themselves. Removing or replacing the
battery could affect your warranty coverage. If a battery is no longer holding a charge, contact support.
Using external AC power
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.
NOTE:
For information on connecting to AC power, see the Setup Instructions poster provided in the
computer box.
External AC power is supplied through an approved AC adapter or an optional docking or expansion device.
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Chapter 6 Power management