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05-20-2012, 06:37 PM
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#2
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Rivet Master
2007 30' Classic
Oswego
, Illinois
Join Date: Jul 2010
Posts: 13,669
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I have a similar setup, I use a 15 watt panel for preventing battery drain while in storage. I can think of no reason that there would be an issue with what you describe, as long as everything is wired properly.
I must say, I have never had both the converter AND the panel providing power at the same time....but I still can think of no issue.
__________________
-Rich-
"If the women don't find you handsome, they should at least find you handy." - Red Green
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05-20-2012, 07:02 PM
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#3
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Rivet Master
1974 Argosy 26
Morrill
, Nebraska
Join Date: Nov 2009
Posts: 6,014
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The solar panel won't look any different than the battery to the converter. You should be fine.
Keep in mind, without a controller on the solar panel there won't be any regulation. I doubt if a panel that size could over charge your battery.
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05-20-2012, 07:22 PM
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#4
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Rivet Master
2007 30' Classic
Oswego
, Illinois
Join Date: Jul 2010
Posts: 13,669
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Eric,
You don't say the size of your panel, but my 15 watt realistically and actually puts out about 750mA (net, per my TriMetric 2025RV) during the northern spring - fall for about 7 hours a day average. This is enough to keep batts charged in storage, but will never provide an overcharge, between low current flow, nighttime parasitic loads and cloudy days.
__________________
-Rich-
"If the women don't find you handsome, they should at least find you handy." - Red Green
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05-20-2012, 07:48 PM
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#5
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4 Rivet Member
1974 23' Safari
Vintage Kin Owner
1947 25' Spartan
, Manor
Join Date: Sep 2011
Posts: 457
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Quote:
Originally Posted by TG Twinkie
The solar panel won't look any different than the battery to the converter. You should be fine.
Keep in mind, without a controller on the solar panel there won't be any regulation. I doubt if a panel that size could over charge your battery.
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Thanks all.
I would be using that small controller from the solar panel. Basically there would be two systems feeding into the batteries separately: the converter would be charging the batts when on shore power and the solar panel would be feeding power through a separate controller into the batts at the same time.
I just wanted to make it maintenance free if possible, leaving them all hooked up at the same time.
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05-20-2012, 07:54 PM
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#6
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Rivet Master
2007 30' Classic
Oswego
, Illinois
Join Date: Jul 2010
Posts: 13,669
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You will be fine with that setup. BUT, what is the panel size? Of course that controller is limited to 7 amps (It is the same one I have), but it is NOT an MPPT controller. That won't matter, IMO, if you are using a very low wattage panel.
I am NOT a solar expert, but have read just about all there is here on the forum. I am not sure if 5 - 7 amps with this non-MPPT controller would potentially harm the batteries, but I would find out.
Again, if you have a 15 watter...or even a 25 watter, I wouldn't be too nervous.
__________________
-Rich-
"If the women don't find you handsome, they should at least find you handy." - Red Green
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05-20-2012, 08:47 PM
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#7
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4 Rivet Member
1974 23' Safari
Vintage Kin Owner
1947 25' Spartan
, Manor
Join Date: Sep 2011
Posts: 457
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Quote:
Originally Posted by dznf0g
You will be fine with that setup. BUT, what is the panel size? Of course that controller is limited to 7 amps (It is the same one I have), but it is NOT an MPPT controller. That won't matter, IMO, if you are using a very low wattage panel.
I am NOT a solar expert, but have read just about all there is here on the forum. I am not sure if 5 - 7 amps with this non-MPPT controller would potentially harm the batteries, but I would find out.
Again, if you have a 15 watter...or even a 25 watter, I wouldn't be too nervous.
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Thanks! I will do due diligence for sure. I'll check tomorrow, but I think it's a 50 watt panel. I did not buy that controller yet, so I could get something like this:
MPPT 10 Amp Solar Power Charge Controller, 160 Watt @ 12V & 320 - Solar Power Panels
instead. Would that be better and take all the worry out of it?
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05-20-2012, 08:49 PM
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#8
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Rivet Master
2007 30' Classic
Oswego
, Illinois
Join Date: Jul 2010
Posts: 13,669
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Boy, maybe some of the solar experts will chime in here, but I THINK with a 50 watt panel, I would advise an MPPT controller.
__________________
-Rich-
"If the women don't find you handsome, they should at least find you handy." - Red Green
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05-20-2012, 08:51 PM
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#9
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Rivet Master
2007 30' Classic
Oswego
, Illinois
Join Date: Jul 2010
Posts: 13,669
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Try commercial member Lewster, maybe by PM. He is one of the pros with solar.
__________________
-Rich-
"If the women don't find you handsome, they should at least find you handy." - Red Green
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05-20-2012, 09:35 PM
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#10
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More than one rivet loose
Currently Looking...
Los Alamos
, New Mexico
Join Date: Feb 2006
Posts: 3,756
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Quote:
Originally Posted by Eric H
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Which ever is the more powerful wattage wise will charge the batteries.
When the converter is plugged in it will win. Without the converter plugged in the Solar Charger will win.
I have a 9960 Intellipower and a Morningstar TriStar controller with four panels on the top of my trailer totaling 52 + 52 + 80 + 80 = 264 Watts.
__________________
Michelle TAC MT-0
Sarah, Snowball
Looking for a 1962 Flying Cloud
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