House Batteries

Discussion in 'Sport Yachts/Yachts' started by JoAna, Aug 8, 2018.

  1. JoAna

    JoAna Member

    91
    Feb 10, 2018
    San Diego, CA
    2005 420DB
    Cummins 6CTA 8.3 450HP
    i'm not sure if I'm going out of place or if this is the right way to post a new question. (if not, please advise) but:

    Hello All. We have 2005 42 Sedan Bridge that presently has group 24 house batteries and i'm very suspicious (should they be group 27)???
     
  2. M Prod

    M Prod Active Member SILVER Sponsor GOLD Sponsor

    420
    Oct 6, 2017
    North Vancouver, BC
    2005 Sundancer 340
    Aquapro Dinghy w/ Honda 8hp
    Kohler 5KW Genny
    Raymarine Electronics
    8.1 Horizons /V Drives
    Doesn’t sound right. My boat for instance has 4 group 31 batteries. Figure yours should have at least that. Regardless your manual should list the recommended batteries for your boat.
     
  3. Stee6043

    Stee6043 Well-Known Member

    Jun 1, 2015
    West Michigan
    1997 Sundancer 400
    7.4L Gassers
    I agree with the above. My '99 340 had group 27's (three of them) and I would be shocked if a 40'+ wasn't at least that big.

    I guess the bigger question is whether or not they are working for you? There are lots of battery threads around here. Generally the bigger size is most impactful if you spend a fair amount of time on the hook. I don't know the capacity difference between the 24 and 27 but I could go 2 full days with two fridges running and occasional toilet, water, radio, etc on 2 group 27 house batteries with no problem. I didn't see the need to go any bigger than 27's based on this experience. Your mileage may vary.
     
  4. hottoddie

    hottoddie Well-Known Member

    Jan 11, 2012
    Boston/Cape Cod
    1986 Sea Ray 390 Express
    Garmin 4212 Chartplotter
    Garmin 24 HD Radar
    Garmin GSD 22 Sounder
    Garm
    454 Crusaders
    This is one of those cases where bigger is definitely better. Put the biggest batteries in that will fit. Most boats with 450hp diesels would have 8D batteries.
     
  5. Little Ducky

    Little Ducky Active Member

    934
    Jun 5, 2017
    Chattanooga TN/Dickson TN
    1998 SeaRay 290 Sundancer
    Twin EFI 5.0L w/Alpha 1 drives
    Just this past year I was in need of 3 new batteries and went from group 27 to 31. Could not find any 27's locally and went with 31's. I really think group 31 took their place on the market since they are pretty close if not the same size.
     
  6. Stee6043

    Stee6043 Well-Known Member

    Jun 1, 2015
    West Michigan
    1997 Sundancer 400
    7.4L Gassers
    One thought on this (very installation specific) is to take a look at your terminal location compared to available cable length before making a switch in battery size. My 340 had EXACTLY the right amount of cable for 27's nestled side by side on the bilge floor between the engines. They were accessible only with substantial amounts of swearing, sweating and rib-puncturing maneuvers over the tops of the engines. If I recall correctly the terminal location would have been slightly different on the 31's..(???) I would have thrown myself overboard had I removed the 27's from my bilge floor and found the 31's would not work because of lack of cable length :)
     
  7. Larry Sturm

    Larry Sturm Member SILVER Sponsor

    68
    Mar 26, 2017
    Chiefland, Florida
    2003 SeaRay 420 Sundancer
    2003 SeaRay 320 Sundancer
    Cummins 6CTA8.3-M3
    Mercruiser 350MPI
    My 2003 420 DA came with group 27.
     
  8. Little Ducky

    Little Ducky Active Member

    934
    Jun 5, 2017
    Chattanooga TN/Dickson TN
    1998 SeaRay 290 Sundancer
    Twin EFI 5.0L w/Alpha 1 drives
    Heavy and fit like a glove.

    I think Group 27 is 12.5" and Group 31 is 13". I did measure the battery trays before purchasing.

    So good point on making sure they fit before purchasing or changing batteries.


    [​IMG]
     
  9. MonacoMike

    MonacoMike Well-Known Member SILVER Sponsor

    Sep 15, 2009
    Indiana lakes and Lake Michigan
    2000 Cruisers 3870
    97 270 Sundancer
    85 Sea Ray Monaco 197
    8.2 Mercs,
    7.4 BII
    260hp Alpha 1
    He said group 24, they are only 10 1/4 long, so there would be no easy fix if the boat was set up for the 24's.

    I agree, check your manual.

    Does anyone have 24's for house batteries?

    MM
     
  10. Robski97

    Robski97 Well-Known Member PLATINUM Sponsor

    Jan 15, 2007
    North Bellmore, NY
    44DA
    Cummins QSC 8.3's
    Too funny . The dealer is responsible for the batteries up to a certain size vessel. My 34 and 44 had the wrong size batteries. Dealer woudnt budge , had to get searay involved. The manual specifically said they had the wrong batteries installed.

    Rob
     
  11. Stee6043

    Stee6043 Well-Known Member

    Jun 1, 2015
    West Michigan
    1997 Sundancer 400
    7.4L Gassers
    Imagine how many times they get away with that??? I bet very few new boat buyers would ever check the size of the batteries at delivery. A nice way for the dealer to pocket a few extra bucks each year I suspect...
     
    Robski97 likes this.
  12. JVM225

    JVM225 Well-Known Member

    Apr 8, 2008
    Farmingdale, NY
    2002 410 Sundancer, Monaco Edition.
    3126 Cats.
    My 410 came with group 27’s, so did my old 300.
     
  13. Craig

    Craig Member GOLD Sponsor

    75
    Feb 8, 2007
    Maryland
    2006 320 Sundancer
    twin 350 Horizon V drives
    My boat came with 27's. Promptly upgraded to 31's 20180711_083355.jpg
     
    JoAna likes this.
  14. JoAna

    JoAna Member

    91
    Feb 10, 2018
    San Diego, CA
    2005 420DB
    Cummins 6CTA 8.3 450HP
    You Sea Ray guys are No. 1, Thanks, Were installing 7 group 31's and one 24 for the genny. We have 4 starting batteries for the Cummins 430 diamond series (2 each) and 3 group 31 house batteries and one group 24 for the gen set.
     
    JVM225 likes this.
  15. MonacoMike

    MonacoMike Well-Known Member SILVER Sponsor

    Sep 15, 2009
    Indiana lakes and Lake Michigan
    2000 Cruisers 3870
    97 270 Sundancer
    85 Sea Ray Monaco 197
    8.2 Mercs,
    7.4 BII
    260hp Alpha 1
    That will do it..

    MM
     
  16. Robski97

    Robski97 Well-Known Member PLATINUM Sponsor

    Jan 15, 2007
    North Bellmore, NY
    44DA
    Cummins QSC 8.3's
    BINGO …
     
  17. JVM225

    JVM225 Well-Known Member

    Apr 8, 2008
    Farmingdale, NY
    2002 410 Sundancer, Monaco Edition.
    3126 Cats.
    Going with the group 31’s was a smart move. I should have done that.
    Separate house batteries?
    I have 5 batteries in my bilge and couldn’t imagine where I would ever fit two more.
    In the bilge I’ve got two for each motor, one for the genny.
    Starboard bank handles that motor and anything 12 volt at the helm like electronics etc..
    Port bank handles that motor and all the 12 volt creature comforts (anything not at the helm).
    Genny just handles the genny.
    I’ve got two AGM’s in series for the 24 volt Bow Thruster stashed under the floor in the cabin that were put there when the Thruster was added.
     
    Last edited: Aug 10, 2018
  18. electricaldoctor

    electricaldoctor Well-Known Member TECHNICAL Contributor PLATINUM Sponsor

    May 14, 2008
    Thousand Islands, Rockport, Ontario.
    1988 390 EC
    454 Mercruiser Gassers
    I installed (4) 235 AH 6 Volt Crown Golf Cart batteries Jul-14-2009 in a series/parallel configuration for our house bank. I check them 3 times during each boating season & top up with distilled water as required. I also have an 18 Watt solar panel up on the dash that is plugged into a 12 VDC source that helps the cause especially when out on the hook. These batteries are still going strong after 9 years service. I hope that I didn't just jinx it.
     
    Last edited: Aug 10, 2018
    JoAna, techmitch and hottoddie like this.

Share This Page

Show Sidebar