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HP Jornada 520 and 540 Series Pocket PC - Managing Power
Because the data and files saved on the HP Jornada are stored in RAM, maintaining a continuous power supply to the HP Jornada at all times is extremely important.
CAUTION: If the HP Jornada runs out of power, all information you have entered is lost Although the Windows for Pocket PC operating system and programs cannot be erased, any added custom settings and programs are erased if power is lost.
The battery is a built-in Lithium-Ion rechargeable battery. Because the battery is built-in, it is not replaceable. This device does not have a replaceable backup battery.
Under typical usage conditions, the HP Jornada should operate for approximately eight hours between charges. Some functions, such as listening to music or using CompactFlash cards, use considerable power and may reduce this time significantly. For example:
“Battery Low” message
Respond as soon as possible when the HP Jornada displays a dialog box warning of low power. If the device is turned off after getting a “battery low” message, the HP Jornada will retain data for up to seven days.
“Battery Very Low” message
If the Jornada is used after the “battery low” message, a “Battery very low” message appears, and the device shuts down automatically when the power reaches a critically low stage. After the “Battery very low” message appears, the Pocket PC will not turn back on until it is connected to external power and recharged. Data will be retained for five days.
Charging the battery
Because the HP Jornada is charged automatically whenever it is connected to AC power, simply connect the HP Jornada to AC power to recharge when the power is low. While the HP Jornada is connected to AC power, the Notification button/LED indicates the charging status:
The battery charges to capacity in about two hours.
Checking battery strength
To check the remaining power:
Conserving battery power
Under normal circumstances, the HP Jornada Standard Battery should provide up to nine hours of continuous use; however, certain tasks require more battery power and deplete the main battery faster. Follow these tips to maximize battery life.
To conserve battery power, MS Windows CE will automatically turn off or suspend the HP Jornada after a period of continuous idle time.
To set or shorten auto-suspend time
NOTE: The HP Jornada uses Intelligent Power Management to automatically turn off after an extended period of inactivity, and to detect and give a warning about active connections when turning off.
Setting power on option
The HP Jornada can also be set to automatically turn on when the screen is touched.
To set the power on option
Setting the HP Jornada display to automatically dim or turn off
Dimming or shutting off the display on the HP Jornada will help conserve battery power. Use the Power Saving tab of the Power Properties dialog to set options for automatically dimming while on battery power, or shutting off the display when system processes that are running (for example, playing music or an Internet connection) will not allow the HP Jornada to auto-suspend.
NOTE: Wireless Internet use requires separately purchased modem and service contract. Check with service provider for availability and coverage in your area. Not all Web content is available.
NOTE: The option to turn off the display when the HP Jornada cannot auto-suspend is selected by default.
Setting automatic dimming
Turning off the display of the HP 540 Pocket PC
Turning off the display of the HP 520 Pocket PC
Other tips for conserving battery power