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Compaq Ipaq 3870 not charging

Hi, I recently bought a used compaq ipaq 3870 off ebay and realised that iwas not charging. I left it in it's cradle all night and in the momrning checked toi see if it had charged but it did not. So I bought a replacement battery and installed it and did the same thing and it still does not charge.

What could be the problem and how do I fix it?

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  • Anonymous Mar 07, 2009

    I am having same problem, I called up HP support, they told me the internal battery is completely dead and it needs to be replaced.

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SOURCE: Compaq Ipaq not Charging

As I understand it, the basic cradle that comes with the Compaq Ipaq 3870 does not charge. If I were you, I'd either seek out a charging cradle or google the instructions for modifying your cradle to charge. Good luck...

Posted on May 14, 2009

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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.

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Here's an eBay auction for a the ipaq, cradle and cover, no bids yet.
There are also a number of chargers available. A Google search also returns several vendors for ipaqs and accessories.

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Compaq iPAQ 3850 Not charging/turning on


Try this - don't give up Leave it charging, even if it takes three days. I sold one a few years ago on ebay and the buyer was insistent it wouldn't charge. Eventually it did start charging and there were no more problems.

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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.

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Compaq Ipaq not Charging


As I understand it, the basic cradle that comes with the Compaq Ipaq 3870 does not charge. If I were you, I'd either seek out a charging cradle or google the instructions for modifying your cradle to charge. Good luck...

Dec 02, 2008 | Compaq iPAQ H3760 Pocket PC

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My iPAQ won't turn on no matter what i do.


If you are saying it heats up the it sounds to me like the battery is not holding a charge anymore. Try to remove the batter and place the pocket pc in its cradle and turn it on if it works then you can be sure it's the battery. You can probably pick up a batery on Ebay real cheap. Or swing by your local BatteryPlus store and they can test the old battery and probably buy a new one in the store. I hope this helps Have a great day.

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Most iPaqs use a small AC Adapter This model will still need an AC Adapter, because it does not draw any current from USB to charge.

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Try this, take the ipaq off the cradle, turn the ipaq off (if you can), restart the desktop, put the ipaq back in thc cradle, turn the ipaq on, and restart ROM update again.

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