Question about NEC MobilePro P300 Pocket PC

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Exhaust my main battery

If I exhaust my main battery, how long will my data remain before I have to plug into AC power?

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Re: Exhaust my main battery

It is estimated that you will have a few days to recharge your battery if the battery is exhausted.

Posted on Sep 15, 2005

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Tmobile dash isn't turning on


  1. Verify that the OEM Charger and Battery are being used.
    • Only the AC charger, Car charger, or USB data cable that came with or was created for the device should be used; others can damage the device and/or battery.
  2. Is the device warm?
    • When using the device for prolonged periods of time, such as when you're talking on the phone, charging the battery or browsing the web, the device may become warm. In most cases, this condition is normal and therefore should not be interpreted as a problem with the device.The device has a protection feature that if the device becomes too warm (due to use of GPS while charging, BT while charging, using the device as a wireless modem, etc), the auto protection feature will be triggered and the charging process will be stopped. Once the device cools down, the device will then begin charging again.
  3. Check the USB Port on the device for any bent or misshapen PIN's.
    • If some are found, that is the most likely cause and this is considered physical damage not covered under the Warranty.
  4. Remove the battery and inspect the contacts.
    • Remove any debris/residue found on the device or battery contacts with a soft, dry cloth.
  5. Look closely at the battery contacts on the phone to see if they are bent out of shape.
    • If they are bent, the device will need to be exchanged.
  6. Try charging the device (try different power sources as well as chargers):
    • Plug in USB to device and PC; is the LED indicating that the device is charging?
      • Note: If the device isn't charging while connected via USB to a PC, go to Start>Settings>More>Power>Power Management and make sure that "When device is turned on, do not charge the device when connected to the PC" is set to OFF.
    • Plug in AC Charger to device and outlet; is the LED indicating that the device is charging?
      • LED indicators: Charging is indicated by a solid Amber light on the upper Left side of the face of the device.
        • Note: If the battery is completely dead, the light will be a solid RED for a few seconds while it is charging; once the device has enough power to turn on, the light will turn to Amber.
  7. Try another Power Source.
    • Try a different outlet to rule out that as the issue.
  8. Try another battery in the device.
    • If another battery doesn't work, perform a Hard Reset.
      • If the device powers up after Hard Reset, test the unit for a few days. If issue returns, device can be considered for an exchange.
      • If device shows charging with one (AC Charger or USB) and not the other, issue is with the accessory. Replace accessory.
      • If device will only power up when attached to charger (AC or USB) it is likely the battery needs to be replaced.
Device won't hold a Charge
The life of the battery between charging sessions will vary depending on which features of the unit are being used.
  1. Verify the you are using:
    • OEM AC Charger
    • OEM USB Data Cable
    • OEM Battery
  2. Fully charge the battery using the OEM AC Charger
    • USB and car chargers are trickle chargers meant to get the user through until they can get to their AC Charger.
  3. If the device is not lasting the advertised Talk time, with minimal use, try another OEM battery in the device.
  4. If the battery life still is not meeting the advertised Talk time (with minimal use), the device will need to be repair/replacement.
Device won't Power on
  1. Attempt to charge the device.
    • If the battery is dead, the device will need to charge for a few minutes and then should power on once this happens.
  2. Attempt to power the device on by pressing the Power Button for 3-5 seconds.
    • If the device doesn't power in, perform a Soft Reset using the stylus.
  3. If the device still doesn't power on, perform a Hard Reset.
  4. Try another battery.
  5. If the device still will not power on, it can then be considered for repair/replacement.
Handset Powers off

  1. Make sure that the device is actually powering off and not just going into hibernate mode by pressing the power button once.
    • If the screen comes back on, the device is not powering down.
  2. If possible, check the battery level by going to Start>Settings>More>Power>Power Management.
    • The charge should be no lower than 10%; if it is, charge the device and retest.
  3. Try another battery in the device.
    • If the device stays powered on with a different battery, the issue is with the accessory not the unit.
  4. If the device still powers off with another battery, Hard Reset the device and retest.
    • If the issue remains after the Hard Reset, the device it can then be considered for repair/replacement.

Nov 13, 2010 | T-Mobile Dash Smartphone

1 Answer

Palm TX two Batteries?


Actually palm depend on main battery thats why system doesnt let it to drain to protect the data. However its true that there is such thing called "External battery" or "Battery Extender" Basically its a simple battery pack. Its convenient when you far away to AC outlet. It usually looks like this fc446ce.jpg

Jul 12, 2009 | Palm TX Handheld

1 Answer

Data missing - Ipaq model HP5555 - did not do hard reset


Hello,

I'm sorry but the HP Ipaq 55xx series store data on a volatile ram based memory. Unlike a nand flash (like usb sticks, memory cards etc) this memory will hold data only as long as it's powered on. If your main battery gets empty you should still be able to retain your files for some 10-20hrs with the backup battery (if it's ok itself and not depleted). After this time the power to the ram memory is cut off and all data is lost.
The problem you face is somewhat related to that backup battery, as it appears it's unable to do it's job and maintain the power to the ram memory at least some 10 hrs. You should have that battery replaced.

There is no way to recover the data from the ram memory as it is stored as an electric charge over some memory cells in the ram chips. When there is no power, these charges dissipate and the pattern is lost.

I'm sorry for having to give the bad news.
Bogdan

Jul 03, 2009 | HP iPAQ H5555 Pocket PC

1 Answer

IPaq rx3115 working like PC not Pocket PC, need to plugin always


You need to purchase a new removable battery for your RX
The removable batts usually only last about a year (like cell phone batteries).
Although it is showing 100% charge, the battery is not storing enough power to run the ipaq

The rx series uses 2 batteries, one is the removable one u can see/access when u remove the back cover. The other batt is a small round batt which stores the basic info for your system (so you don't lose your data when u swap out the removable battery).

This small (backup) batt is similar to the cmos battery on a laptop or pc.
You cannot easily replace this, as the unit needs to be disassembled to access this batt.
If you are tech-y (and brave), the replacement button batteries are sold on ebay for $9-12

Normally, if your removable batt is bad, you could still use your unit plugged in, and could
remove from AC power without losing data. Not the case if your replaceable batt is exhausted.
When both batteries are bad, you lose everything when u remove unit from AC power.

My workaround without having to disassemble unit:
Purchase and fully charge new removable batt (They have huge capacity ones available for like $15 - better than the original !).
Load up all your programs & settings the way you like.
Perform full backup to SD card (& also on PC via active sync - to be safe)
Now the only time you should lose your data (like hard reset) is if you allow the battery
to completely drain, in which case you can restore your backup.
If you purchase 2 removable batts, you can easily swapout without losing data if you
use the usb charge cable & leave ipaq plugged in while you change battery

Hope this helps






Jun 01, 2009 | HP iPAQ RX3115 Pocket PC

1 Answer

The PC is not switching on


Hi. I assume that you plugged in your original battery after it was out a while. When your device's battery is drained, all the data in your device may be resetted (changes according to your backup battery's condition). So you should first try to plug it into AC power source for a couple of hours without touching it (Let the battery become usable enough). Then, your device should open without any error, but it may take a while because it will install the Operating System from ROM. In most cases, pluging out your battery won't destroy any internal parts of your device, it may just reset it to factory default settings. If there is an error, here is how you can hard reset your device:
HP iPAQ rx3715 Hard Reset:
1. Hold down the Mobile Media button (on the far left) and the iTask button.
2. Then press down the reset button with the styles for a few seconds until the screen goes dark.

3. To turn on your HP iPAQ after your hard reset, either press the reset button again, or plug it into an AC power source.
Hope this helps. 

May 31, 2009 | HP iPAQ RX3715 Pocket PC

1 Answer

Zire72's on the fritz!


Plug the ac wall adapter to charge the PDA and leave it there.

When the PDA exhausted the battery charge, it needs minimum 30 minutes to charge to the minimum level to have the PDA powering on.

Once it powers on, leave it charging the battery until is fully charged (3-4 hours).

Best regards,

Sep 02, 2008 | Palm Zire 72 Special Edition Handheld

1 Answer

Main Battery Power


It cannot switched the batteries. The backup one is a small internal battery just to keep the CMOS with data. That's it.

If you main battery is not charging or when unplugged won't power on, the is likely the main battery is defective, or the charging circuitry of it is failing.

Best regards,

Jul 01, 2008 | HP iPAQ RX3115 Pocket PC

2 Answers

Hard reset screen appears whenever i change the main battery


Your pda has a built in battery.The inbuilt one has lost its charge. To keep it from reseting to its original factory settings. You need to keep the main battery(the one you charge up) regularly charged.

Feb 14, 2008 | Dell Axim X50 Pocket PC

3 Answers

Loss of data when battery goes dead?


-are all pda's this way? All PocketPCs are this way. I don't own a P**m so I can't speak to them. -When the main battery depletes to the point where the unit shuts off how long do you have before data is lost? Until the backup battery dies. -Is the backup battery just used when changing main batteries or does it take over when the main battery goes dead? If so how long do you have before it is dead? I've never had it happen, so I cannot say how long, but if you continue to try to use the PDA on the backup battery it won't be long (minutes) if it even lets you do that. The backup is there to bridge over battery changes and to act as a safety net if you run the main batteries totally flat. -does the backup battery recharge or does it have to be replaced? Replace. -with a fully charged unit how long can it be left off before data is lost? Depends on the machine. Most of us leave the thing in the charger overnight every night, so this issue doesn't come up. You could try an experiment for 1, 2, 3 days, looking each day at the battery remaining and work up an estimate. I would expect maybe a week or more. Remember, even "off" the machine is still drawing power to maintain the RAM memory.

Sep 13, 2005 | Dell Axim X5 Pocket PC

3 Answers

E-125 No Power


are you checking your adapter. i had the same problem with my casseopeia e115. i searched and searched for the battery which even casio doesn't offer anymore. i bought a battery pack which works great w 4 AA batteries but it's bulky and you lose data when you turn off the batteries. i finally went on to discover that my charger/adapter that plugs into the e115 and the serial cradle was scorched by a lightening strike and it was not charging and eventually the batteries DIED!!! I took the adapter to an electronics repair store and for $15.00 they rewired the adapter and it works!!!! it charged the batteries and worked fine.(altho i have to visit them again because i think one of the new wires is bent and i have to position it perfectly to keep charging.) BTW: any one looking for a new casio battery jk210lt...i have a couple to sell! ;-) hope this helps

Sep 06, 2005 | Casio Cassiopeia E-125 Pocket PC

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