HP Managing battery power, Main battery, •Remove fonts, sounds, and wallpaper you do not need

112 HP Jornada 600 Series User’s Guide

•Remove fonts, sounds, and wallpaper you do not need.

•Delete files and voice memos you do not need, or transfer them to your desktop PC for storage and delete them from your HP Jornada.

You can increase the storage memory by adding a memory module on a CompactFlash or PC card. For more information, see the Accessories section in this chapter.

Managing battery power

Because the data and files you save on your HP Jornada are stored in RAM, it is extremely important that you maintain a continuous power supply to your HP Jornada at all times. If your HP Jornada runs out of power, all information you have entered will be lost. The Windows CE operating system and programs are stored in ROM, and cannot be erased; however, any programs you have added and custom settings in existing programs will be lost.

Data stored on a PC Card or CompactFlash Card will be saved, even if your H/PC loses power. To protect your data, back up regularly to a PC Card or CompactFlash Card by using HP backup.

HP Jornada uses two types of batteries. The main battery supplies power whenever your HP Jornada is not connected to AC power. The backup battery protects your data when the main battery is not installed (for in- stance, while you exchange the main battery).

Main battery

The main battery is the HP Jornada Standard Battery, a rechargeable lithium ion battery pack. Use only the HP Jornada Standard Battery (HP F1281A) or the HP Jornada Extended Battery (HP F1282A) with your HP Jornada. These batteries are designed only for use with the HP Jornada 600 series H/PC and should not be used to power other devices.

Under normal circumstances, the main battery will provide up to 7 hours of continuous use without recharging. Actual battery life will vary depending on screen brightness, what applications you use, and operating conditions. When the main battery runs very low, your HP Jornada will shut down, and you will be unable to restart it until you replace the main battery, recharge the battery, or connect to AC power.