HP 6720t Mobile manual Managing low battery levels, Conserving battery power

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Managing low battery levels

The information in this section describes the alerts and system responses set at the factory. Some low- battery alerts and system responses can be changed in Power Options. Preferences set using Power Options do not affect lights.

Identifying low battery levels

When a battery that is the sole power source for the computer reaches a low battery level, the battery light blinks.

If a low battery level is not resolved, the computer enters a critical battery level, and the battery light begins blinking rapidly. If the computer is on or in Standby, the computer remains briefly in Standby, and then shuts down and loses any unsaved information.

Resolving a low battery level

CAUTION: To reduce the risk of losing information when the computer reaches a critical battery level, do not restore power until the power lights turn off.

Resolving a low battery level when external power is available

▲Connect one of the following devices:

●AC adapter

●Optional docking device

●Optional power adapter

Resolving a low battery level when a charged battery is available

1.Turn off the computer.

2.Remove the discharged battery, and then insert a charged battery.

3.Turn on the computer.

Resolving a low battery level when no power source is available

▲Save your work and shut down the computer.

Conserving battery power

●Select low power-use settings through Power Options.

●Turn off wireless and local area network (LAN) connections and exit modem applications when you are not using them.

●Disconnect external devices that are not plugged into an external power source, when you are not using them.

●Stop, disable, or remove any external media cards that you are not using.

●Use the fn+f9 and fn+f10 hotkeys to adjust screen brightness as needed.

●If you leave your work, initiate Standby or shut down the computer.

Using battery power 21

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Contents HP Compaq 6720t Mobile Thin Client Page Safety warning notice Iv Safety warning notice Product notice Vi Product notice Table of contents Multimedia Appendix a Routine care Page Top components Identifying the hardwarePointing devices Component Description LightsAdjust Power Properties Buttons and switchesFn key KeysRight-side components Front componentsLeft-side components Bottom components Rear componentsWireless antennae Identifying the labels Enhanced Write Filter Using the Enhanced Write FilterPointing devices Using pointing devicesSetting pointing device preferences Connecting an external mouseUsing hotkeys Using the keyboardDisplaying system information fn+esc Decreasing screen brightness fn+f9 Switching the screen image fn+f4Viewing battery charge information fn+f8 Initiating Standby fn+f3Using the embedded numeric keypad Using the keypadsEnabling and disabling the embedded numeric keypad Switching key functions on the embedded numeric keypad Using an optional external numeric keypadPower control and light locations PowerProperties Shutting down the computerUsing power-saving states Setting power optionsInitiating and exiting Standby Using the battery meter Using battery powerInserting or removing the battery Displaying the remaining battery chargeCharging a battery Resolving a low battery level Managing low battery levelsConserving battery power Identifying low battery levelsStoring a battery Using external AC powerDisposing of a used battery Connecting the AC adapter Using the audio features Using multimedia hardwareMultimedia Using the audio-out headphone jack Using the audio-in microphone jackAdjusting the volume Using the external monitor port Using multimedia softwareUsing the video features Opening preinstalled multimedia softwarePreventing playback disruptions Using multimedia softwareObserving the copyright warning Using Wlan WirelessAbout integrated wireless devices Using wireless controlsSetting up a Wlan Using wireless security features Connecting to a WlanIdentifying a Wlan device Connecting a modem cable Using a modemModem and LAN Connecting a country-specific modem cable adapter Solving travel connection problems Selecting a location settingViewing the current location selection Set the modem to ignore dial tones Connecting to a local area networkPage Protecting the computer SecuritySetting passwords in Windows Using passwordsUsing a power-on password Entering a power-on password Managing a power-on passwordRequiring a power-on password at restart Installing a security cable Using a USB device Connecting hardwareConnecting a USB device Inserting and removing a PC Card Using the docking connectorUsing PC Cards Removing a USB devicePage Page Identifying installed drives Hardware upgradesHandling drives Using optical drives select models only Inserting an optical disc CD or DVD Removing an optical disc CD or DVD When the disc tray opensWhen the disc tray does not open Traveling and shipping Cleaning the displayCleaning the keyboard Routine carePage USB IndexWlan

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