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Old 02-10-2009, 07:36 AM   #15
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Batteries like anything else need to be look at more that once a yr. I check mine monthly when the camper is in use and take the batteries out and put them on trickel in winter or off season.
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Old 02-10-2009, 08:26 AM   #16
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A simple and cheap solution to dry batteries

The hazard is hot weather. None of the Airstream-supplied converters properly adjust the charge for our Austin 100+ degree weather.

I can post this now since it will be in my column in the issue of Airstream Life Magazine that is coming out about now.

A simple and low cost (<$20) way to keep the batteries from going dry is to use a heavy-duty lamp timer and a short (about 4') extension cord. Both items must have 3-prong outlets to supply the ground for the converter.

Unplug the converter from the trailer front wall and plug in the extension cord. The cord is to get the timer out where you can easily reach it. Plug the timer into the cord and the converter into the timer. I just let my timer ride on top of the contents in the drawer under the sofa. There is enough slack to allow the drawer to move.

I use only one battery in my Classic 28 and I charge it 1/2 hour twice a day when the trailer is plugged in at the storage yard. A friend I set up that has two batteries gets by with 1/2 hour once a day. I chose the time by watching the charge level over about a week.

When you are using the trailer, increase the charge time or simply plug the converter directly into the extension cord.
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Old 02-10-2009, 08:44 AM   #17
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If you have any appliances that have a permanent hot line, such as audio in my case, consider installing a battery disconnect switch. Any battery will loose charge just sitting. But a disconnect will slow that down considerably minimizing the need to charge.

You could also put in a voltmeter, or get a voltmeter you can plug into a 12v outlet. When a battery gets down to about 10 1/2 volts it should be recharged. Repeatedly letting a battery get below 10 1/2 reduces it's life expectancy.
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Old 02-11-2009, 07:58 AM   #18
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Univolt Pictures - since ya'll love them!!!!

Here are a few photos we took of our univolt and the on/off toggle I mentioned.
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Old 02-11-2009, 09:14 AM   #19
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From the pictures, it looksas though that switch was installed by a PO.
As to the Univolt itself, almost nobody "loves them", they are bulky, heavy, 40 year-old technolgy. Unless you must have a 100% "period correct" trailer, toss it out, and replace with a modern 3-step charger, your batts will love you for it. At todays prices for non-ferrous metals, you could be supprised at what the scrap value might be.
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