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Old 12-11-2004, 09:59 PM   #1
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killing batteries

New to AS and Rving. Manual says to keep unit plugged to house current, but when I do this the Univolt keeps running and kills battery. Killed two in two months. How do you prevent battery killing? 1971 Globe Trotter.
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Old 12-11-2004, 10:16 PM   #2
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There has been a lot of discussion about this on the foreums, a search of "battery", "Univolt", and "Overcharging" should show you some good options.

The simplest option is to simply unplug the trailer from shore power, and disconnect the batteries. If you want to leave everything hooked up, a simple 110vAC timer plugged into the outlet where the trailer power cord is, and set to be "on" for an hour a day will more than suffice in keeping the batteries charged, while minimizing the boiling out problem.
Terry
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Old 12-11-2004, 10:23 PM   #3
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killing batteries

Greetings dogwood!

Quote:
Originally Posted by dogwood
New to AS and Rving. Manual says to keep unit plugged to house current, but when I do this the Univolt keeps running and kills battery. Killed two in two months. How do you prevent battery killing? 1971 Globe Trotter.
You are experiencing a "classic" Univolt related problem. The usual recommendation is to remove the battery or batteries and store them safely in a location not subject to freezing. Since I have no desire to lug my battery back and forth, in the past, I have just resigned myself to the idea that anything beyond one year for the house battery was a bonus - - I always watched the early seaon sales and rarely paid more than $50 for a battery. I have no idea how well this is going to work, but I recently purchased a heavy duty timer that I am planning to connect to the Univolt outlet and time the Univolt to run 4-hours per day (during January and February we typically will have at least 8 to 10 hours below freezing each day so I want to insure that the battery charge is maintained and I also have hard-wired 12-volt smoke, LP Gas and Carbon Monoxide detectors in the coach producing a continuing battery drain) - - I will be leaving the coach connected to shore power all winter (my plan is to check the electrolyte level on a monthly basis).

I did find a "permanent" solution to the issue with my '64 Overlander through installation of an AJL Solar system that completely replaced the original Univot with a high quality power inverter/charger and solar control system with a set of three AGM batteries. The batteries just completed their third season and show no signs of problems. I haven't pursued this option with the Minuet as it is very costly for my use pattern for that coach.

Good luck with your coach!

Kevin
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Old 12-11-2004, 10:32 PM   #4
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pluged in

You can install a battery cut off switch sold in most marine stores.
Picture of the one I installed has a key that can be removed.
I read somewher to install on negitive side of battery.
Mine is on the positive between the Univolt and battery I can leave the AS pluged in and not worry about overcharging.

Garry
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Old 12-12-2004, 07:23 AM   #5
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Pitch It.

Quote:
Originally Posted by dogwood
New to AS and Rving. Manual says to keep unit plugged to house current, but when I do this the Univolt keeps running and kills battery. Killed two in two months. How do you prevent battery killing? 1971 Globe Trotter.
I agree with Kevin on this one.
Old Univolts have to go, pitch it!
Buy yourself a new switched mode, smart charger like the Intellepower unit.
Make sure it is a charger that has some brains attached, it will pay for itself in longer battery life.
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Old 12-12-2004, 07:45 AM   #6
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I just installed a new Intellipower in my Overlander. Very simple straight forward installation. After pulling out the old UV, I drilled out 4 rivets that held the fuse panel in, and mounted the panel and the IP on a board and slipped it back in to place. The wiring hooked right back in and I was up and running in no time. The Charge Wizard stayed on boost for a few hours until the battery was fully charged, and then it slipped down in to storage mode. If I use a lot of battery power, it steps up and recharges.

My UV sat in an area that could, and was, affected by water from the shower. I made a Quonset hut to protect it, and let it have air to breathe. The water problem I have solved, but I just wanted to play it safe.

The hardest thing to do was to get to the wires which were inside of an access panel. Tight squeeze.
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Old 12-13-2004, 07:59 PM   #7
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Camping World December 2004 Sale has 55 AMP converter #14839 for $170.10 installed for free. (can not tell kind.)They have a 60 AMP RV converter that looks like Inteli Power #21995 for $179.10 Installed for $97. Charge Wizard is $23.39 Install $64.00. How difficult is the install of Inteli Power and Charge Wizard. Are these Do it Yourself??????
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Old 12-13-2004, 09:19 PM   #8
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Do it right the first time and save some dough in the long run. Intellipower or higher end unit would not leave you in the dark.
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