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Old 09-28-2012, 10:52 AM   #1
1 Rivet Member
1974 27' Overlander
Woodruff , Wisconsin
Join Date: Apr 2012
Posts: 5
Univolt system not charging

After a summer of scratching out heads, we finally figured out the Univolt system was not charging our battery when we were plugged into 120. We checked all the fuses and believe they are all good. After reading some of the threads, I'm wondering if this is something that should just be upgarded to a current system or is it worth fixing? Any suggestions??

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Old 09-28-2012, 10:57 AM   #2
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1995 30' Excella
Bowie , Maryland
Join Date: Apr 2005
Posts: 2,344
Well, first, check to make sure it's not just turned off - some campers have a switch for it, or it might be unplugged, check the breakers, etc.

But even if it is off and does work fine, it's worth upgrading - the old univolts only put out a single voltage that will kill your battery unless you're careful to turn it off when it's done charging. The three stage models available today are much smarter and shouldn't do that.

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Old 09-28-2012, 11:00 AM   #3
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1974 Argosy 20
2014 20' Flying Cloud
Kooskia , Idaho
Join Date: Jul 2009
Posts: 4,591
No old Univolt is worth fixing, even if anyone would fix it or could find parts. They were good at the time, but times change. They tended to overcharge batteries and cause their early death.

A modern 3 stage charger, such as the Progressive Dynamics PD 9245 or 9260 is a good investment. Less than $200 generally. I think the 9245 would work fine for you.
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Old 09-29-2012, 10:54 AM   #4
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1975 31' Sovereign
cary , North Carolina
Join Date: Aug 2012
Posts: 145
I can attest to this, I wana keep the system original, but having more modern equipment that doesn't sound like a small drill going all the time that's silent and keeps your battery good for a while, is def better, plus u can see it.
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