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Old 10-06-2015, 08:35 PM   #1
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Solar, Battery Charger, Alternator Will they argue at the Battery?

If I connect a solar panel controller to the house battery bank will it need to be protected from the Inverter's Battery Charger or the Alternator Battery charging in some manner?

Or do they all get along just fine?

1995 38' CC Magna #5280
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Old 10-06-2015, 08:43 PM   #2
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With all sources properly fused there is no conflict.

2013 Leisure Travel Vans Unity U24MB, 635 watts solar, 440 AH batteries, 2000 watt inverter, Koni struts and shocks, Hellwig rear anti-swaybar, SumoSprings front and back, 2012 Hyundai Accent SE, Blue Ox baseplates, Aladdin towbar and Patriot
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Old 10-06-2015, 09:33 PM   #3
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They will cooperate based on the battery voltage and work just fine.
Vince and Susan
2011 Tiffin Phaeton 40QTH (Cummins ISC/Freightliner)
Flat towing a modified 2005 Jeep (Rubicon Wrangler)
Previously a 2002 Fleetwood Pace Arrow 37A and a 1995 Safari Trek 2830.
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Old 10-07-2015, 09:42 AM   #4
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as above said, if you are using flooded/agm/gel batteries, and you connected the wires of solar controller output to the house batteries, all things will be taken care of, no need to worry about the charging. however, if you were running on li batts, that is a different story.
Steven & Polly
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Old 10-07-2015, 09:59 AM   #5
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Great! Thanks to all who replied.
1995 38' CC Magna #5280
C8.3L 300hp Cummins, 31,000lbs
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Old 10-07-2015, 09:01 PM   #6
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Dean they will not argue about it but they will play nice...

Assuming each are voltage regulated and maybe multiple stage maybe not as it does not matter.

Neither is smart enough to realize that the other is in place so their regulator just assume a battery is there and acts.

If the inverter is multi-stage and is operating at say 14 volts and the solar charger is set to 13.5 then the panels will do nothing.

If the inverter is in float at 13.5 and the solar controller is set to 13.6 then the solar will be operating at full output up to the 13.6.

No real need to worry but a safe action would be to confirm with the device manufacturers to confirm proper settings as there may be a configuration setting to allow for better marriage of the two systems.

Tony & Lori
1989 Country Coach Savannah SE
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alternator, battery, solar

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