HP Presario Using battery power, Using Battery Health in Help and Support, Displaying the remaining battery charge, NOTE, WARNING, Windows Mobility Center

Using battery power

When a charged battery is in the computer and the computer is not plugged into external power, the computer runs on battery power. When the computer is plugged into external AC power, the computer runs on AC power.

If the computer contains a charged battery and is running on external AC power supplied through the AC adapter, the computer switches to battery power if the AC adapter is disconnected from the computer.

NOTE The display brightness is decreased to save battery life when you disconnect AC power. To increase display brightness, use the fn+f8 hotkey or reconnect the AC adapter.

You can keep a battery in the computer or in storage, depending on how you work. Keeping the battery in the computer whenever the computer is plugged into AC power charges the battery and also protects your work in case of a power outage. However, a battery in the computer slowly discharges when the computer is off and unplugged from external power.

WARNING! To reduce potential safety issues, use only the battery provided with the computer, a replacement battery provided by HP, or a compatible battery purchased from HP.

Computer battery life varies, depending on power management settings, programs running on the computer, display brightness, external devices connected to the computer, and other factors.

Using Battery Health in Help and Support

The Battery Health section of the Help and Support Learning Center provides the following tools and information:

●Battery Check tool to test battery performance

●Information on calibration, power management, and proper care and storage to maximize battery life

●Information on battery types, specifications, life cycles, and capacity

To access Battery Health:

▲Select Start > Help and Support > Learning Center > Battery Health.

Displaying the remaining battery charge

▲Move the pointer over the battery meter icon in the notification area, at the far right of the taskbar.

– or –

View the estimated number of minutes of battery charge remaining in Windows Mobility Center:

▲Click the battery meter icon, and then click Windows Mobility Center.

– or –

Select Start > Control Panel > Mobile PC > Windows Mobility Center.

The time shown indicates the approximate running time remaining on the battery if the battery continues to provide power at the current level. For example, the time remaining will decrease when a DVD is playing and will increase when a DVD stops playing.

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