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Old 04-26-2019, 02:42 PM   #1
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Self Build Trawler Yacht 50ft

Hi All,

I am in the process of wiring my 50ft trawler yacht and have a question, that I am hoping someone can answer:

I have two thousand amp hours of batteries, I am using a Victron 8kva Quattro inverter charger and need to know why most manufacturers split the total amount of batteries into two domestic banks? Why not a single bank?

Thanks, Billyb.
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Old 04-26-2019, 03:38 PM   #2
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I don't think most manufacturers have two house/domestic banks. Our boat has a house bank, engine start battery and a generator start battery. All are separate. I've seen boats with twins where each engine has a separate bank, one of which also serves as the house. The only benefit I see for two separate house banks would be redundancy in the event one bank goes flat or shorts out.
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Old 04-26-2019, 03:41 PM   #3
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Quote:
Originally Posted by Billyb View Post
Hi All,

I am in the process of wiring my 50ft trawler yacht and have a question, that I am hoping someone can answer:

I have two thousand amp hours of batteries, I am using a Victron 8kva Quattro inverter charger and need to know why most manufacturers split the total amount of batteries into two domestic banks? Why not a single bank?

Thanks, Billyb.
Redundancy.

I would build it as two separate banks and have them joined with a heavy duty battery switch (1, 2, both). If you have a problem with a bad call, switch to the unaffected bank unit you resolve the problem with the other.

Ted
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Old 04-27-2019, 12:02 PM   #4
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Hi Guys.
Thank you very much for you responce.
Regards Billyb
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Old 04-27-2019, 12:26 PM   #5
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Suggest you read Nigel Calder's book or contact him directly. Also look up CMS out of Maine. Steve D sometimes visits this site, he may well respond or contact him directly too. All 3 of these groups are pros and current. On a new build, this is your chance to get consensus from the right guys.
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