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  #1  
Old 04-04-2018, 04:40 PM
jesam jesam is offline
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Dual Battery Diagram Review

This is my final answer if it passes the TT test. I know the diagram is cumbersome but I will appreciate a review.

Thanks.

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  #2  
Old 04-04-2018, 04:44 PM
waterlogged882 waterlogged882 is offline
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Quote:
Originally Posted by jesam View Post
This is my final answer if it passes the TT test. I know the diagram is cumbersome but I will appreciate a review.

Thanks.
I stopped reading and looking after the first sentence.

.
But here is the attachment for when your link dies.
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John 3:16-18
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  #3  
Old 04-04-2018, 06:28 PM
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Id move the charge relay to the other side of the switch and move the helm BUS to the other bank.
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Old 04-04-2018, 06:55 PM
jesam jesam is offline
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MLA,

1 - what is the purpose of the charge relay on the other side of the switch? Keep the batteries from equalizing? I like the thought of that.

2 - only the starter on "2" battery
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  #5  
Old 04-04-2018, 07:21 PM
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ACR/VSR's typically have some parasitic draw. Also, think about what that voltage sensing relay is going to do when the charger starts putting out voltage.

Only thing than really needs to draw off the cranking battery, is whats needed to "make the boat go".
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Old 04-04-2018, 07:46 PM
jesam jesam is offline
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I hear ya and saw others doing it that way. But the Blue Seas instructions say to put it directly to battery. But what do they know.
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  #7  
Old 04-04-2018, 08:01 PM
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For another opinion, whats your blue sea retailer suggesting?
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  #8  
Old 04-04-2018, 08:41 PM
jesam jesam is offline
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Trick question? Switch and relay came with boat and I’m rewiring.
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  #9  
Old 04-04-2018, 09:19 PM
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Then call blue sea and ask an engineer about the parasitic draw and what happens when a charger is in use with the above diagram.

Electrically, power flows the same in both scenarios when the boat is in use.
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  #10  
Old 04-04-2018, 09:57 PM
jesam jesam is offline
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I don't disagree with you, just stated that instructions say different. I just finished my board. Check it out. Sound, Ballast, and Dash all go to "1" battery. Only the starter goes to "2". You can see a lug reserving its spot. I will feed the battery cables in from the bottom.

Its done now but 2 awg sure was hard to squeeze in. For the future, is smaller 4 awg acceptable for the short runs?
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