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need new batteries

Discussion of batteries, chargers, wiring, generators, distribution panels, battery switches, etc.
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Canada
Midnightsun
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CYO Supporter
Posts: 2944
Joined: March 27th, 2016, 2:27 pm
Vessel Info: The Midnight Sun
2007 41CMY
Volvo D6-370's
Location: Montreal, Canada
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Re: need new batteries

Postby Midnightsun » July 4th, 2017, 12:46 pm

I agree on the generator group 31 being way overkill. Mine was dead as a doornail and decided to order a group 24 AGM from Costco. This is what I ended up with. http://www2.exide.com/bm/en/product-sol ... rpose.aspx
Cheers, Hans
2007 Carver 41 CMY
Twin Volvo D6-370's
Montreal, Canada
Midnight Sun I Photos


United States of America
tomschauer
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Posts: 2310
Joined: March 28th, 2016, 10:52 pm
Vessel Info: 1998 Carver 355
Suspicious Fishes !
2022 Kawasaki 310X
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Re: need new batteries

Postby tomschauer » July 5th, 2017, 11:10 pm

I'm sure you could use a smaller battery for the genset, and it will most likely work well. I like to have them all the same, maybe just a bit OCD, but if needed (genny wont start, charger bad etc) I could move the genny battery to replace one of my others and start up to get back home.
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United States of America
tonyiiiafl
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Vessel Info: 1994 Carver 39 Cockpit Motor Yacht
Location: Cape Cod, MA
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Re: need new batteries

Postby tonyiiiafl » July 20th, 2017, 6:32 pm

I Have a 390c PMY with the same 3 battery set up. I removed the battery from position #2, and replaced with 2 6V golf cart batteries making a large 12V. We anchor overnight and the refrigerator and lights only use 15% of the bank. I start generator in morning and evening for 90 minutes and top off to 100%. To recap, MY position 1 is a group 31 start battery, position 2 the house battery and the independent generator battery. Works for me!

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