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Old 10-14-2009, 12:51 PM   #57
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It is not a good idea to leave a lead acid battery to sit for more than a few weeks if you value longest battery life. You need a battery maintainer that will assure a top charge and do something to inhibit sulfation and stratification.
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Old 10-29-2009, 10:53 AM   #58
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1970 31' Sovereign
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univolt putting out 17 volts?

Holy smokes. I put a voltmeter on my battery and the reading was 17.2 volts!
I had stuck my head in the service area looking for a water leak and I heard the water in the battery boiling.
This is a 1970 unit with the original Univolt.
Didn't someone say the voltage output is adjustable? I examined the Univolt and didn't see an obvious adjusment.
I disconnected my battery (for obvious reasons) and continued to use my 12 volt lights as needed. Isn't this a no-no?

I am plugged into shore power, 120v.

Thanks,
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Old 10-29-2009, 11:05 AM   #59
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To the best of my knowledge univolts don't have an adjustment and do exactly what you describe if you stay constantly plugged in. Ditch the univolt for an updated converter and these problems will go away. Personally I went with a Inteli-Power but there are others brands. Take a look here. http://www.airforums.com/forums/f449/
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Old 10-29-2009, 11:22 AM   #60
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Quote:
Originally Posted by chasrahm View Post
Holy smokes. I put a voltmeter on my battery and the reading was 17.2 volts!
I had stuck my head in the service area looking for a water leak and I heard the water in the battery boiling.
This is a 1970 unit with the original Univolt.
Didn't someone say the voltage output is adjustable? I examined the Univolt and didn't see an obvious adjusment.
I disconnected my battery (for obvious reasons) and continued to use my 12 volt lights as needed. Isn't this a no-no?

I am plugged into shore power, 120v.

Thanks,
The old style Univolts were subject to failure, when a good power surge took place,

That was coorected many years ago.

Every auto charging system has failures, but when they are very low, that's good.

Airstream's current Univolt, has been in use for a number of years, with a very low failure rate.

Most of the failures you read about, are for the Univolt 5 systems and older.

Andy
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