HP Jornada 928 HP Jornada 920 Series Wireless Digital Assistant - (English) Us - Page 24

20 | hp Jornada 920 series wireless digital assistant user's guide managing power Because the data and files you save on your hp Jornada are stored in RAM (random access memory), maintaining a continuous power supply to the hp Jornada at all times is extremely important. If your hp Jornada runs out of power, all information stored in RAM is lost. The preinstalled programs will not be deleted even if your hp Jornada suffers a loss of power; however, any custom settings and programs you have added will be erased. This section describes • how to run your hp Jornada using the batteries or an ac power supply • how to turn the phone and PDA functions on and off • how to manage power to ensure you get the longest use of your hp Jornada between charges batteries Your hp Jornada includes two rechargeable lithium-polymer batteries. The removable battery can be removed to allow access to the SIM card slot. The embedded battery cannot be removed; it provides power when the removable battery is not present. How long you can operate your hp Jornada without recharging the batteries depends on the features and functions you use. If you use only the PDA functions (no phone functions, and without using the backlight), the batteries included with your hp Jornada will provide approximately 12 hours of use. If you use your hp Jornada only as a phone, the batteries will provide approximately 150-210 minutes of talk time or 120 hours of standby time. Note that some functions, such as listening to music, using the backlight, or using phone functions, use considerable power and may reduce this time significantly. In addition, factors such as your distance from the transmitter and the configuration used by your GSM/GPRS service provider may affect battery life when you are using the phone.