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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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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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The oxygen sensor is never too far from the engine in the exhaust. Look for an electrical wire or wire set going to a piece sticking out of the exhaust. The main oxygen sensor, or sometimes two sensors, are placed always before the catalytic converter in the exhaust stream. For a different purpose, cars nowadays will also have an oxygen sensor AFTER the catalytic converter but still in the exhaust. The purpose is only to monitor the efficiency of the converter.

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The dryer will run for a long priod of time (hours) without shuting off and the clothes remain wet.

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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


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Also check the charging system. make sure the alternator is charging the battery at above 13Volts. With all components on. ( radio/lights/highbeam/AC). Use a voltmeter and check at the battery positive and negative. if its not charging above 13 V replace the alternator.

good luck


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,
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