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Electrical Discussion of preventative/corrective maintenance and other technical issues regarding your coach's electrical system.

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  #1  
Old 02-03-2010
Rob Robinson's Avatar
Rob Robinson Rob Robinson is offline
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Default Xantrex Inverter/Charger

My 'new to me' coach has a dual inverter/charger system with the RC7 remote panels. Recently Lucas Willemse installed new lead acid house and start batteries. It's been a couple of days so the batteries have had a chance to get used to their new home and charge up fully. When the RC7 panel displays FLOAT the battery voltage reads 13.8 or 13.9. The manual states that FLOAT voltage should be 13.5 for lead acid batteries. After talking with Randy who has the same system I found out that his readings are much the same. In both cases the RC7 and the dash analogue guage agree. When I first got this coach the batteries took four and a half gallons of distilled water. They never did recover and that is the reason I bought new ones from Lucas. By the way Randy has Gel batteries not lead acid. I'd like ask those more familiar with this system if this float voltage is correct or too high.
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Old 02-03-2010
cmillsap
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Rob,

Deka states that flooded lead acid batteries can be charged at a higher rate than Gel @ 14.1 or AGM @ 14.5 . My float charge rate is 13.7/ 13.9. with the two Xantrex 3000w inverters. I have Deka Seamate AGM's. I would think your batteries charge rate is ok.

Deka technical data sheet is linked below.

http://www.eastpenn-deka.com/assets/base/1081.pdf

Chuck

Last edited by cmillsap; 02-03-2010 at 04:01 PM. Reason: mispelling
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Old 02-03-2010
marvjeanm380 marvjeanm380 is offline
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Default Xantrex inverter/charger

Rob:

You have to tell the RC7 what kind of batteries you have. Gel cells are the default. Here is the addy for the RC7 manual.

http://www.xantrex.com/web/id/425/docserve.aspx

Hope this helps.
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Old 02-03-2010
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Rob- my lead acid batteries are floating at a rate of 14.0 volts due to temperature compensation. It is 30 degrees here in PA. Does your Xantrex have a temperature probe? If so, then the higher voltages are fine. You will notice that they drop in the summer months to 13.5 or so.
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  #5  
Old 02-03-2010
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My Xantrex inverter pair has a temperature probe. Rob's should too.
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Old 02-03-2010
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Yes I have two temp probes and yes I have the RC7 set for lead acid. I'm feeling better now that you have had your say. I was a little gun shy after putting four and a half gallons of H2O in the old six 4 D's. Good to know all is well. Thanks Chuck, Marv, Shane and David.
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Old 02-03-2010
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Them batts will simmer and cover the area with mist if too hot a charge. Long as they are cool and dry, no problems. I've got AGMs in the house bank, bought a new smart charger as I don't want to keep the bus plugged in all the time. It floats @ 13.5, no temp comp.
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