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Post by melvyn on Mar 14, 2022 16:41:39 GMT
I have recently purchased a Sun Odyssey 419, 2017 model and am seeking enlightenment on my battery arrangement. I have two in the forecabin next to the bow thruster, three in the port aft cabin wired together and marked 'domestic'. Two in the starboard aft one marked 'engine' and one marked 'auxiliary', seven in all. Also there's a switch on the main panel marked 'auxiliary'. All are linked as when I charge I charge them all. I also have an electric winch and windlass, each with a circuit breaker. My Jeanneau manual doesn't clarify, in particular the function of the auxiliary'. Any help would be welcomed.
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Post by puravida35 on Mar 14, 2022 18:51:11 GMT
The battery arrangement on your 419 sounds like it’s the same as my 439, except that the battery next to the engine start battery is part of the domestic bank. On my boat, I believe “auxiliary” refers to the bank near the bow thruster.
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barryl
Full Member
Posts: 49
Jeanneau Model: Sun Odyssey 409
Yacht Name: Sound’s Great
Home Port: Mt. Sinai, NY
Country: USA
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Post by barryl on Mar 14, 2022 19:03:35 GMT
Hello and Welcome!
I have a 2011 409. So not the same boat but similar. My boat also has 2 12V batteries in the v berth. Those are for the bow thruster. I have the 3 cabin layout. In the starboard after cabin I have 3 12V batteries and in the port aft cabin I have 2 12V batteries. One of the batteries in the port cabin is the engine start. The other 4 batteries make up the domestic bank.
In the port aft cabin I have two switches for the batteries. One negative with a black handle, and two positive with red handles. One is for the engine battery and the other is for the 4 domestic batteries.
On the main switch panel I believe AUX is for connecting an auxiliary device, something relatively low power, like another interior light, or a small inverter. I don't believe the AUX switch has anything to do with the batteries.
Your owners manual should have a section on batteries and there should be some simple wiring diagrams. The 409 manual does show the setup quite clearly. If your manual doesn't then you should find a copy of the 409 manual, it's available on this site too.
Good luck, Barry
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Post by melvyn on Mar 15, 2022 21:53:32 GMT
Thank you
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Alan
Junior Member
Posts: 16
Jeanneau Model: Sun Odyssey 419
Yacht Name: Sun Cream
Home Port: Benfleet Yacht Club
Country: UK
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Post by Alan on May 11, 2022 20:55:19 GMT
Hi Melvin, I have a 2016 JSO 419 so the battery configuration should be very similar if not identical to your boat.
I have 2 batteries (12V 80AH Exide lead acid battery x 2) under the Vee berth in the forward cabin serving the bow thruster and the windless. These are shown on the electrical panel as "Auxiliary".
There are 2 batteries in the starboard aft cabin. The outboard battery is for engine starting only (12V 100AH Exide lead acid battery). The battery closest to the engine compartment is a "Domestic" battery (12V 115AH Leoch AGM Lead Carbon Deep Cycle Battery).
There are also 3 batteries (12V 115AH Leoch AGM Lead Carbon Deep Cycle Battery x 3) in the port aft cabin all of which are "Domestic" and are wired together along with the domestic battery in the starboard aft cabin mentioned above.
All three battery groups are charged separately via the mains fed on-board charger however they all follow the same charging profile (optimised for AGM batteries). They are also charged by the 120 amp alternator when the engine is running.
The "Engine" battery is only used to start the engine and nothing else. The "Domestic" batteries run the fridge, lights and water pumps etc. The "Auxiliary" batteries support only the bow thruster and windless. Note: On my boat they are only powered when the engine is running.
I carry a set of good quality jump leads just in case the engine battery goes flat. This can then be jumped from the domestic battery sitting along side it in the starboard aft cabin. I guess that's why they put two batteries there in the first place.
Hope this helps
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Batteries
May 12, 2022 22:30:15 GMT
via mobile
Post by moonshadow on May 12, 2022 22:30:15 GMT
Hopefully you received an owners manual with the boat. In the back is a wiring diagram that seems overwhelming at first. If it doesn’t make sense after giving it a good look it can be worthwhile to have a marine electrician or a Jeanneau maintenance person go through it with you. Well worth understanding as much as possible.
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