Question about Compaq iPAQ H3850 Pocket PC

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Compaq iPAQ H3800 Pocket PC

Have a pocket pc that seems to not be holding a charge but functions when plugged up, what's the problem?

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  • Steve Stonebraker
    Steve Stonebraker May 11, 2010

    how old is the pocket pc? when is the last time you used it?

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I have a problem on my compaq ipaq h3800 it has no appear screen but all white i see. It is happend after i charge my pocket PC. ? Can you answer me plz.

Posted on Jun 06, 2010

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I had the same problem with my iPAQ H3800. I bought a replacement battery on eBay for £7.49 and now it's fine.

Posted on Feb 06, 2009

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1 Answer

The battery doesn't work


okay so heres the deal o have this h3800 Compaq pocket PC and it has been left uncharged for a while but now that i go to use it i will only work when plugged in.

Dec 14, 2010 | Compaq iPAQ H3630 Pocket PC

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Replacing HP Compaq Ipaq H3600 / H3800 series Screen & digitizer.


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on Mar 02, 2010 | Compaq iPAQ H3630 Pocket PC

2 Answers

Ipaq 1940 losing programmes during main battery changeover


  1. Plug the charger adapter into the charging port on the bottom of the HP iPAQ Pocket PC.
    Figure : Charging the battery
  2. When the power indicator on the top of the HP iPAQ Pocket PC turns solid amber, the unit is fully charged and can be disconnected from the AC adapter (approximate time to fully charge a unit is four hours).
NOTE: The amber charge light blinks while the battery is recharging and turns solid (nonblinking) when the battery is fully charged.In the event of a low backup battery warning, charge the unit immediately before removing the main battery to avoid data loss. To view the amount of charge left in the backup battery, tap Start, Settings, the System tab, and Power.
Charging with the universal desktop cradle and AC adapter Use the universal desktop cradle to charge the HP iPAQ Pocket PC, or synchronize the HP iPAQ Pocket PC with a computer.
Follow these steps to charge the HP iPAQ Pocket PC using the universal desktop cradle:
  1. Plug the AC adapter into an electrical outlet and connect the other end of the AC adapter to the AC connector on the universal desktop cradle.
  2. Connect the serial or USB cradle cable into the appropriate port on the desktop PC.Figure : Connecting with the cradle
  3. Slide the bottom of the HP iPAQ Pocket PC into the cradle and push firmly to seat it.
CAUTION: To avoid damaging the HP iPAQ Pocket PC or the cradle, make sure the pins are aligned before pushing the HP Pocket PC into the cradle.
    Figure : Charging with the universal desktop cradle
  1. AC adapter into electrical outlet
  2. AC adapter into universal desktop cradle
  3. HP iPAQ Pocket PC into cradle
NOTE: The amber charge light blinks while the battery is recharging and turns solid (nonblinking) when the battery is fully charged.There are stabilizers located in the universal desktop cradle that assist in aligning the unit when there is no expansion pack attached. When placing the HP iPAQ Pocket PC with an expansion pack attached into the universal desktop cradle, the stabilizers will be pushed down by the expansion pack. To release the stabilizers for use without an expansion pack, press the button on the back of the cradle.
Charging with the optional USB Autosync cable Charge the HP iPAQ Pocket PC using the optional USB Autosync cable by connecting the Autosync cable to the HP Pocket PC and the personal computer. The HP Pocket PC will be charged using power from the personal computer.
For more information on charging the HP Pocket PC using the optional USB autosync cable, from the Today screen, tap Start, Settings, the Systemtab, Power, the USB Charging tab, Settings, and Help.
Charging a low battery The HP iPAQ Pocket PC will not turn on if the battery has a low charge (less than 3.2 Volts). Fully charge the battery prior to using the HP Pocket PC.
If the charge on the battery goes below the 3.2 Volts as a result of not being connected to the universal desktop cradle or the AC adapter, no damage will occur to the battery. However, the HP iPAQ Pocket PC charge indicator light will not flash until the battery reaches the minimum charge of 3.2 Volts and a normal reset is performed.
Follow these steps to charge and reset the HP iPAQ Pocket PC:
  1. Connect the HP iPAQ Pocket PC to an A/C power supply.
  2. Charge the battery to the minimum level of 3.2 Volts (this will take 5 to 30 minutes depending on the current charge level).
  3. Perform a normal reset by using the stylus to lightly press the Reset button on the bottom of the HP iPAQ Pocket PC.
  4. Turn on the HP iPAQ Pocket PC.
Keep the HP iPAQ Pocket PC connected to the universal desktop cradle or AC adapter when it is not in use.

Aug 25, 2017 | HP iPAQ H1945 Pocket PC

1 Answer

Can only use when it's plugged in


I had the same problem, and did a lot of searching. Go to this site:

http://h20000.www2.hp.com/bizsupport/TechSupport/Home.jsp?lang=en&cc=us&taskId=&prodSeriesId=96481&prodTypeId=215348


Download new BIOS for the unit, and follow the instructions very carefully. Depending on what kind of cables/dock you use, you might have to get creative in order to pull it off. It took a few times of trial and error, but now my unit works perfectly. Good luck.

Nov 16, 2008 | Compaq iPAQ H3850 Pocket PC

1 Answer

BLANK Pocket PC ! - iPAQ 3885


Yes, I did. Actully for my model it is at the bottom. I used that along with RESET key - which makes 'Hard Reset' - but the same Red screen remains....

Sep 12, 2005 | Compaq iPAQ H3850 Pocket PC

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