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Old 11-12-2016, 05:44 PM   #1
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Magnum Inverter/Charger question

Hello! We have a 2006 Newmar KSDP 3910 with an upgraded Magnum Energy ME-ARC Inverter/Charger. How do we connect this to shore power to trickle charge the batteries while the coach is in winter storage for the next 6 months? Any information will be greatly appreciated!
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Old 11-12-2016, 08:32 PM   #2
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If you have at least a 110 outlet near coach you need a dog bone to connect the 50 amp end and 110 plug on other end of it to plug into outlet.
You can go from 50 to 30 to a 30 to 110 adapter also any combination will do but less adapters the better.
Once you have plugged in the 12 volt charging system will take over from converter to keep all your batteries fully charged.
If you want 50 amp service make sure outlet is wired correctly.
All the links below in my signature have info for your Newmar.
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Old 11-12-2016, 11:00 PM   #3
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With the Magnum system you can set the maximum amperage rate to charge the batteries. This is explained in your owner's manual. That being said the Magnum system is a "smart" system and will automatically reduce the amp output as the batteries come to full charge. Again this is explained in the owner's manual.
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Old 11-13-2016, 06:22 AM   #4
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are you referring to keeping the HOUSE batteries charged, or the CHASSIS batteries?

-the easiest method for the HOUSE batteries is to use a 50-30 and 30-20a adapters and use an extension cord to plug into a residential 110v outlet, if 50a or 30a are not available where you have it parked. Keep the CHARGER on, and you can also set the SHORE MAX setting to 5 or 10 in case you also want to keep the fridge or other items on.

-the Magnum inverter/charger does not charge the Chassis batteries
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Old 11-13-2016, 08:04 AM   #5
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Quote:
Originally Posted by MisterT View Post
-the Magnum inverter/charger does not charge the Chassis batteries
If his BIRD is working properly, once the voltage reaches 13.2V on the house batteries, it closes the isolation solenoid and charges both house and chassis batteries.
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Old 11-13-2016, 01:30 PM   #6
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Smile

yes, you are right, if the motorcoach in question makes use of a BIRD...

I guess I was referring to the question of an Inverter/Charger unto itself...


one available BIRD:
Intellitec’s Bi-Directional Isolator Relay Delay ( BIRD )offers a new approach to charging batteries in an RV application. Unlike prior systems that only allowed charging the RV battery from the engine’s alternator, the Bi-Directional Isolator Relay Delay charges both batteries when either one is being charged. When the coach is being driven, both batteries will be charged from the engine’s alternator. When the coach is plugged into shore power, both batteries will be charged from the converter. If neither battery is being charged, the batteries are fully isolated. The controller also senses heavy loads on either battery to prevent the wrong battery from being inadvertently discharged.
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Old 11-13-2016, 05:44 PM   #7
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Your coach batteries charge with the house batteries. Simply plug the coach in and the Magnum will do what it's suppose to. I would make sure that you check the battery water at least once at the three month mark.
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Old 11-13-2016, 06:14 PM   #8
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Thanks

Thanks so much for the replies, very helpful!
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Old 11-14-2016, 06:29 AM   #9
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You can check it with a voltmeter. When it's plugged in the voltage should be around 13.3+ on both the house and chassis batteries.
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