grannyapple3
Indiana/Arizona
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Joined: 11/27/2005
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We have an 03 Fleetwood Discovery and our batteries are boiling constantly when plugged in? We are of the understanding that the high power charge should go to a point and then shut down to a trickle charge. Ours seems to not ever switch to that trickle charge. Any ideas guys? 
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Sully2
Cincinnati
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Joined: 01/20/2003
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grannyapple3 wrote:We have an 03 Fleetwood Discovery and our batteries are boiling constantly when plugged in? We are of the understanding that the high power charge should go to a point and then shut down to a trickle charge. Ours seems to not ever switch to that trickle charge. Any ideas guys?
Get someone to adjust it properly!
2000 Country Coach Allure; Cummins ISC 330 HP; 71/2 - 8 MPG regardless
2002 Jeep Liberty
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George H
Washington
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Joined: 06/27/2006
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May be time to start looking for a new converter/charger (I've had to replace the converter in my 05 and 5er has not been used that much).
If you are boiling batteries dry, you will be replacing batteries soon.
George, Juanita and Mandie (boss Shar-Pei)
01 F350, PSD, DRW
05 Carri-Lite 32RS3
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grannyapple3
Indiana/Arizona
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George H wrote:May be time to start looking for a new converter/charger (I've had to replace the converter in my 05 and 5er has not been used that much).
If you are boiling batteries dry, you will be replacing batteries soon.
Wow those probably aren't cheap huh? Do you remember how much yours was? With our luck it probably isn't something as simple as a sensor or something I am sure....
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firemanmn
Bowstring Minnesota
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I had this happen a couple of years ago. Turns out that one battery was defective. It would take a charge but wouldn't hold a charge so the charger was constantly charging to maintain it. The second battery would boil out because of the the constant charging required of the defective battery. I removed one battery and charge them separately to see what one was discharging. I almost purchased a new inverter before checking the batteries. I saved a lot of money!
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George H
Washington
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New Precision Dynamics 80amp ran me $375+ (didn't havve time to shop as was leaving for AZ that weekend), simple to install yourself.
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JohnnyT
Goshen New York
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Joined: 07/15/2003
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If memory serves me the Discovery came equipped with the Xantrex 458 Freedom Inverter/Converter/Charger...
The charger is a 3 stage charger and is supposed to trickle charge once the batteries are fully charged...
However, your batteries must be in good condition and if multiple batteries they must all be the same amp hour rating and condition...Also the charger must be set to the right amp hour rating of your batteries.
Your owners manual will show you how to set the correct amp hour setting..If that is correct then have you batteries load tested to insure you do not have a problem with the batteries.
JohnnyT
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nelson
Clio,Mi USA
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Joined: 07/01/2002
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It might be time to replace battery's, I would start with getting them checked.
2002 Damon Challenger 348 Ford V10
Blue Ox Auto Stop and Aventa II Tow Bar
2001 Ford Sport Trac with Remco Driveshaft Disconnect
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CA Traveler
Sun Lakes, AZ
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Have the batteries load checked by a good battery shop that knows how to spell deep cycle, most auto shops don't. Then with known good batteries post the digital voltmeter voltages for the charger. Should drop to about 13.2V when they are charged.
2004 Holiday Rambler 36 Endeavor PST with ISC 330 Cummins
2004 Honda CR-V
Bob
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D & M
Laurel, MD
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I would check the batteries first. Firemann had the right idea. We had the same situation where one battery was defective when we got our unit and the converter cooked the good battery by trying to keep charging the bad one.
Batteries were replaced under warranty and haven't had a problem since.
Batteries are cheaper than a new charging system. I'm not saying that this is the answer to your specific problem. Since yours are four years old, one may be failing. If you do find that you need to replace one, do them all at the same time, so that they all take an equal charge.
Dave  & Mary 
Isabel (a cuddly little Boston)
Buddy (The Beast) another Boston
2005 Itasca Suncruiser 35A
2003 Jeep Liberty
If it's listed in the Yellow Pages, the government shouldn't be messing around with it.
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