User manual HP IPAQ H3135 Supplementary Guide

[. . . ] WHITE PAPER October 2001 Prepared by Access Business Group iPAQ Mobile Solutions Engineering Division Author: Joel M. Vincent Compaq Computer Corporation CONTENTS Executive Summary 1 iPAQ Battery and Power Management Design 2-3 Usage Considerations 4-5 Power Management Settings Impact on Battery Charge 6 iPAQ Pocket PC Constant Use Battery Life Testing 7-8 Battery and Power Management Q&A Notice 10 11 . . 1 iPAQ H3100/H3600/H3700 Series Pocket PC Battery EXECUTIVE SUMMARY The purpose of this White Paper is to explain the battery design and function as well as usage scenarios and power management suggestions for the Compaq iPAQ Pocket PC. This will include an overview of: · · · Battery Design Tables for a Variety of Usage Conditions Data Retention (should the battery become discharged) The information contained in this document pertains to all Compaq iPAQ H3100, H3600, and H3700 Series Pocket PC's with either the CF Expansion Pack or the single/dual slot PC Card Expansion Pack. IPAQ POCKET PC BATTERY iP A Q B A T T E R Y A N D P O W E R M A N A G E M E N T D E S I G N The iPAQ Pocket PC uses an advanced Lithium Ion Polymer battery design. [. . . ] The trickle charge only occurs from the Expansion Pack to the main battery of the iPAQ Pocket PC. · Dual Slot PC Card Expansion Pack · 4 The Dual Slot PC Card Expansion Pack has two batteries with a total capacity of 2000 mAh. IPAQ POCKET PC BATTERY · Although there are two batteries, they function as one. These batteries will supply power only to the PC Card's that are inserted into the expansion pack. The batteries will not power the iPAQ Pocket PC. If the voltage in the main battery of the iPAQ Pocket PC is less than the voltage in the Dual Slot PC Card Expansion Pack, then a trickle charge will activate. This trickle charge will continue at a rate of 100 mAh until the charge in the iPAQ Pocket PC battery is greater than the combined charge of the Dual Slot PC Card Expansion Pack batteries. 5 IPAQ POCKET PC BATTERY POWER MANAGEMENT SETTINGS IMPACT ON BATTERY CHARGE iPAQ Pocket PC's have several power management related settings that can be adjusted by the user to customize a battery-powered profile. Backlight Brightness Level When the iPAQ is on, the backlight brightness has the most impact on battery charge of all the power management settings. · · · · Super Bright mode delivers the shortest battery charge. Power Save mode (no backlight, reflective screen only) delivers the longest battery charge. Medium Bright is the default battery operation LCD brightness level. Note that Super and High Bright dim to Medium at the critical battery power warning. Activating the Automatic feature enables the iPAQ to monitor the ambient light in the usage location and adjust the backlight brightness to match the user selected setting level. This should improve battery life for any of the LCD settings if the use of the iPAQ is in a brightly lit area for a significant amount of time. On the color iPAQ's, the Backlight Brightness Level control window can be accessed from the Q menu Backlight; the Q button Backlight; Start Settings System Backlight Brightness; or from the "backlight" link in the Power Settings window by clicking Start Settings System Power. On the monochrome iPAQ's, the Backlight can be turned ON or OFF by pressing the Q button Backlight or through Q menu Backlight. This can also be achieved by pressing and holding the power button. Audio Settings Audio volume settings have a significant impact on battery performance. The audio settings window can be accessed from Q menu Volume; Q button Volume; or Start Settings Sounds & Reminders. The higher the volume level is set, the greater the impact will be on the battery. Back-up and Restore Options There are many back-up and restore options. Please view the Back-up and Restore for iPAQ Pocket PC White Paper located in the Reference Library at http://www. compaq. com/support. 6 IPAQ POCKET PC BATTERY iP A Q P O C K E T P C C O N S T A N T U S E B A T T E R Y L I F E T E S T I N G The iPAQ Pocket PC has been tested for constant use battery charge using the industry standard test program for Pocket PC. This test is part of the suite of tests required for Pocket PC certification. The constant use test allows for worse case battery charge to be determined for each iPAQ power management settings group. A matrix displaying the results for various models tested with different brightness and audio settings and the range of hours each model is expected to achieve is included below. NOTE: Altering the iPAQ Pocket PC from its original configuration may result in a decrease of battery performance. As batteries age, there is also a natural and expected decrease in performance. 32 MB Color iPAQ Pocket PC Brightness / Audio Volume Setting Super / Loud (6/6) Super / Disabled High / Middle (3/6) Medium / Disabled Low / Silent (1/6) Low / Disabled Power Save / Loud (6/6) Power Save / Silent (1/6) Power Save / Disabled 64 MB Color iPAQ Pocket PC Brightness / Audio Volume Setting Super / Loud (6/6) Super / Disabled High / Middle (3/6) Medium / Disabled Low / Silent (1/6) Low / Disabled Power Save / Loud (6/6) Power Save / Silent (1/6) Power Save / Disabled iPAQ iPAQ w/ PC Card Expansion Pack (empty) 5:30-5:45 6:45-7:00 6:00-6:15 7:45-8:00 7:15-7:30 8:45-9:00 15:15-15:30 16:15-16:30 22:15-22:30 iPAQ w/ PC Card Expansion Pack (avg. [. . . ] Tap on the "Save Contacts" box 4. Tap on "Disable" bullet In the event you want to completely erase the back-up Contact information stored in the flash memory (for instance, if you want to give your iPAQ Pocket PC to another person and don't want that person to have any of your contact information), perform the following process: 1. Launch QUtilities (Use the "Q" hardware button or select Start Programs QUtilities). Tap on the "Save Contacts" box 4. [. . . ]