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Document No. 308402-001

  

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Battery Reserve

– Also called Memory Retention Time. The battery reserve acts as a

backup battery for the Pocket PC. It also determines the length of time that the unit will

retain user data and programs in RAM after the main charge is depleted. While in

Battery Reserve mode,the power button cannot be used to turn on the unit. This period

starts after the final warning of low power and ends when the battery disconnects via

software to prevent over-discharge. It is important to connect the Pocket PC to AC

power and recharge the battery before the battery disconnects to prevent loss of user

data and programs.

Full Reset

– Also called Hard Reset or Cold Boot. This is accomplished by placing the

battery into Battery Disconnect mode,then re-activating the battery. Disconnect the

battery by pressing and holding application buttons

1

and

4

simultaneously while

pressing the reset switch for approximately 5 seconds. A full reset will clear both running

programs and erase user data and programs in RAM. Information such as contacts and

appointments are stored permanently in non-volatile memory or Permanent PIM. A full

reset will return the Pocket PC to the factory default settings but will not erase the

contents of the File Store or a backup of contacts or appointments from Permanent PIM.

Learn Cycle

– Also called Battery Calibration. This is a routine that can start when the

battery has completely discharged to the point of disconnecting the battery. As the

battery is charged,parameters that are used to monitor or report battery status are

reset. The Learn Cycle routine cannot be started in any other manner.

Normal Reset

– Also called Soft Reset or Warm Boot. This is accomplished by pressing

the reset switch located on the bottom of the unit for 2 seconds with the stylus. A

normal reset will clear any running programs,but will not erase user data and programs

in RAM.

RAM

– Also called Memory. Random-access memory (RAM) is a type of memory that is

written to and erased many times. The user data in RAM can be lost if battery or AC

power is no longer available. RAM in the unit is used for two purposes – storing user

data and programs,and running programs. The allocation of memory for each purpose

is managed automatically. This can be viewed by tapping

Start

Settings

System

Memory

.

Summary of Contents for IPAQ H3800

Page 1: ...ower The brighter the light the more power is consumed Backup Battery The iPAQ Pocket PC does not contain a separate backup battery A portion of the internal main battery is reserved for back up purposes When the Pocket PC is running on the back up portion of the main battery it is in Battery Reserve Battery Capacity The amount of available battery storage As lithium ion batteries get older with u...

Page 2: ... contacts and appointments are stored permanently in non volatile memory or Permanent PIM A full reset will return the Pocket PC to the factory default settings but will not erase the contents of the File Store or a backup of contacts or appointments from Permanent PIM Learn Cycle Also called Battery Calibration This is a routine that can start when the battery has completely discharged to the poi...

Page 3: ... technology which offers many advantages for use in handheld devices have become available Lithium Polymer Technology The battery used in the H3800 and H3900 Series iPAQ Pocket PCs is a 1400 mAH internal lithium polymer battery This design combines a battery with the highest energy capacity in a space saving package Lithium Polymer has many advantages over other battery technologies including no m...

Page 4: ...e run time can vary greatly with many factors and configurations For example using High Bright setting will affect run time dramatically High Bright is the default backlight setting when the unit is docked and on AC power however it should be used infrequently if the user wants to extend run time while using battery power If the need is to increase capacity the trade off must be to increase size a...

Page 5: ...ery has disconnected the shelf life is approximately 1 year Battery Reserve Data will be maintained for approximately 72 hours while in battery reserve LED Indicators The LED located next to the power button indicates charging and charge status by using the following signal indicators Flashing amber light battery is charging Solid amber light battery is charged Battery Charging From the point wher...

Page 6: ...g the automatic feature enables the iPAQ Pocket PC to monitor the ambient light in the usage location and adjusts the backlight brightness to match the environment This should improve battery run time if the use of the iPAQ Pocket PC is in a brightly lit area for a significant amount of time On iPAQ Pocket PCs the Backlight Brightness Level controls can be accessed from the Today screen by tapping...

Page 7: ...nly iPAQ with PC Card Expansion Pack iPAQ with PC Card Expansion Pack Plus iPAQ with Dual PC Card Expansion Pack Plus iPAQ with CF PC Card Expansion Pack Plus High 4 21 4 02 2 41 4 02 4 41 Medium 5 41 5 21 3 02 4 21 5 22 Low 8 42 6 22 5 51 6 21 6 22 Off Mode 13 48 Note Depending on the device purchased usage time can vary from device to device WL110 PC cards were used for the PC Card Expansion Pac...

Page 8: ...s iPAQ with CF PC Card Expansion Pack Plus High 4 28 4 21 6 57 7 11 7 50 7 20 Medium 6 42 6 39 10 49 11 00 13 38 11 11 Low 12 37 12 40 19 38 20 04 26 59 20 17 Off Mode 13 42 13 45 22 18 21 52 30 26 22 41 Note Depending on the device purchased usage time can vary from device to device All iPAQ Pocket PCs and expansion packs were fully charged at the start of the test The Expansion Pack Plus had 920...

Page 9: ...ry The trickle charge current can be from 0 to 200ma depending on the voltage difference The higher the difference the greater the current The trickle charge and the battery voltages are the same Therefore if the main battery is very low and the external battery is fully charged then the external battery will trickle charge the main battery until they have the same voltage The trickle charge occur...

Page 10: ...etting should not be used for long periods of time while traveling to conserve battery power Enabling the automatic feature of the Brightness Setting will match the backlight to the surrounding ambient light Howdoesthebatterypowermanagementscenariowork The battery is a lithium ion polymer cell with 1400 mAH capacity The battery fully charges in approximately 4 hours If the unit is connected to AC ...

Page 11: ...nnectto ACpower The unit will turn on and the battery will start being charged The amber LED should start to flash WhatareBatteryDischargeScenarios There are 3 main stages Stage 1 When the unit reaches a low charge 40 a low battery warning message will appear periodically The system will continue to function normally Stage 2 As the battery charge reduces 20 the backlight is unable to be set higher...

Page 12: ...n to the user defined backlight setting The user must reset the device to the previous setting or cycle power on the Pocket PC Whatwilllengthenbatterylife Do not leave your WLAN card in the unit at all times Keep the Pocket PC plugged in to AC power whenever possible Charge the iPAQ Pocket PC in the cradle overnight Whataboutlongtermstorageofthebattery It is recommended that you fully charge the b...

Page 13: ...thebattery Your battery can be recharged at any time The frequency does not have any affect on the Pocket PC Frequent recharging improves the battery condition Willthebatterybecomedamagedbychargingitbeforethebatteryhas completelydischarged It is recommended that the Pocket PC remain connected to AC power when not in use Being connected to AC power for an extensive period of time will not damage th...

Page 14: ...to perform a Full Reset The unit will automatically go to disconnect state at the end of the battery reserve period If the battery is fully charged and the device is not used the battery will disconnect after approximately 29 days and 4 hours of nonuse If the battery is discharged the battery would disconnect after 72 hours reserve time or 25 to 100 hours reserve time on 3900 Series ...

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