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Re: The backup battery not working
Yes the battery can be replaced but this will require you to dissasemble the pda. The problem you face is a clear sign that this battery has failed. There has always been a problem with hp's battery measurement algorithm regarding that secondary backup battery. Altrough it is empty or even if you remove it, the program will still display a full bar. In order to change this battery you will need to remove the screws from the back of your unit. The casing will come off pretty easy. The back-up cell is a small coin like battery most probably wrapped in a green plastic shel. you should find a similar battery and connect the pins from the old one to the new. The battery size is not critical as long as you can make it to fit in the space inside. Try, however, not to use a very small battery because it will drain much faster then larger ones. Carefull when observing polarity.
If you need more informations please reply.
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follow this steps and fix it. God bless you
Plug the battery backup into a working electrical outlet. If the battery backup turns on when the power button is pressed, then the problem may be that the previous electrical outlet is faulty. Proceed to step three. If the battery backup doesn't turn on, proceed to step two.
Reset the circuit breaker on the battery backup. APC battery backups have a labeled circuit breaker button located on the unit near the phone line, fax line, USB, network and coaxial cable inputs. Press the button to reset the circuit breaker. Power on the battery backup by pressing the power button. If the battery backup powers on, proceed to step three. If the battery backup doesn't turn on, proceed to step six.
Determine if the battery backup is charged and providing battery power. With the battery backup on and plugged into a working electrical outlet, plug a computer monitor into one of the battery backup outlets labeled "battery backup plus surge protection" on the battery backup. (APC power supplies have some outlets that provide only surge protection while the other outlets provide surge protection plus battery backup.) Turn the monitor on. Unplug the battery backup power cord from the wall outlet. If the monitor remains on, the battery is holding a charge, supplying electrical power and the battery backup is working properly. If the monitor goes off, proceed to step four.
Charge the battery. Plug the battery backup into an electrical outlet and allow the battery to charge for 16 hours. This will fully charge the battery.
Test battery charge. Once the battery is fully charged, repeat step three. If the monitor stays on when power is interrupted to the battery backup, the issue is solved and the problem resulted from an incompletely charged battery. If the monitor turns off when power is interrupted, the battery within the battery backup is faulty and needs to be replaced.
Replace the battery backup unit. The unit itself is faulty. If the battery backup is under warranty, contact APC to request a replacement.
Hello george parce. You're details are perfect and I can help you here. The reason your settings aren't returning after a reboot is due to the backup battery. I'll spare you the technical details (but if you'd like them, just send me a message or email and I'll happily provide) and get straight to solutions. The backup battery gets it's power from the main battery and also charges thusly. Realize that it usually takes a whopping 15 hours to fully charge this backup battery. I recommend to all my clients having this problem that they leave the unit in it's cradle with the main battery in overnight or a little longer. This will at least get a good charge in the backup battery, if not charge it fully. If the problem persists, I recommend you contact Motorola/Symbol or the vendor you purchased it from about warranty/repair for the backup battery. I hope this helps and at the very least have helped you isolate the issue. Good luck!
Hello mis1539. I think I can help you here. First: are you sure the backup battery is defunct? Bear in mind that the backup battery takes about 15 hours to fully charge and will discharge if the main battery or power source is disconnected or goes completely dead for anywhere from 30 minutes to a few hours. If the backup battery discharges, the process starts all over and the backup battery will need to be charged for 15 hours again. If you think the backup battery may have discharged at some point, it could be that it never full re-charged so it will discharge and lose your settings (cache/flash memory) almost instantly. It is worth mentioning that about 95% of my clients that have this problem have fixed it by simply making sure that the unit is in it's cradle, with the battery in and charging overnight to fully recharge the backup. Again, I really would implore you to give this a shot before resorting to cracking open the unit and getting to the backup battery (which is no fun task, I assure you). If this doesn't work for you, please let me know and I can help you further. I hope this solves your problem. Good luck!
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.
Would help to tell us how old is it, and what are your useing habits, but I can tell you that modern Lithium Ion batteries allways needs to keep some charge on them, completely depleating them and then rechargeing is no good at all for them, if that happens what you can see is that full charge is getting enough for lesser and lesser times, if this is the case you need this fixed unfordunately you need to get a new battery and try to never let it depleated, that way it will serve you for long years.
The backup battery exists to protect your data when the main battery dies. It only has enough power to keep the internal memory 'alive' so you dont lose your files, settings etc.
When the backup battery dies it should be replaced as soon as possible, as the main battery will power the internal memory only while it has charge. Should the main battery die it would be like performing a hard reset.
You have to first charge the backup battery, for charging insert a fully charged main battery into the MC906x. Then the backup battery will starts charging leave it there for one day. if that message is still coming then the problem is with the backup battery and u have to replce it
-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?
-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.
You might hook your charger up to your battery and check the voltage that you are getting when it is fully charged. It may be that the charger is bad.
Your voltage when fully charged with the battery on it should be a little over the rated voltage of the battery.
Just a thought. Be sure you are using the correct poweradapter/charger also.
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Blinking amber light means the battery is not fully recharged. Once it is charged, press the power button. If the the device still does not turn on take out the main battery and the backup battery. Put the main battery in first, then the backup battery and put the battery switch in the lock position. Press the power button and you should see initializing memory..., then starting..., then it will ask you to set up the device.