40 sedan bridge forum

Discussion in 'Sport Yachts/Yachts' started by Caseclosed, Aug 8, 2012.

  1. Carpediem44DB

    Carpediem44DB Well-Known Member PLATINUM Sponsor

    Aug 18, 2015
    Sanfransico Bay area
    2006 44 DB Sedan Bridge Raymarine gs165 w Quantum HD Radar
    Achilles 350 Dink
    Nick Jackson Davit
    Cummins QSC 8.3 500 HD
    I just bought a group 31 AGM by Duracell from Sam's here is Nor Cal. It was $169 out the door! we probably pay some hidden climate change tax or something. Did you buy AGM or Lead acid?
  2. scooper321

    scooper321 Well-Known Member GOLD Sponsor

    Jul 4, 2015
    Baltimore, MD
    2003 Sea Ray 400DB
    Twin Cummins 6CTA-8.3
    I got lead acid. I saw price for the AGM. But two things stopped me. One, there was no stock and I needed them immediately. Two, there’s a lot of talk on this forum about replacing the battery charger that came on the boat. I still have that original one. And since I didn’t know the original state of the batteries I was replacing, I bought cheap so that if there’s an issue with the charger, I don’t cook expensive batteries. Once I confirm my charger is ok (and I do believe it is) I may go to AGM.

    Or maybe not. The $70 more per battery is $280 more than I paid (4 batteries). That’s almost 3 extra batteries worth! So unless I can be assured of getting almost 2x the life from AGM’s vs lead acid, I’ll stick with lead acid. Despite all the great things I’ve heard about AGM, I’ve never heard anyone claim that the technology delivers 2x the life.
  3. Tomco

    Tomco Active Member

    Aug 16, 2012
    Ottawa, Ontario
    2004 420 Sedan Bridge
    GHS Hydraulic Lift
    11' Walker Bay, 30hp
    Cummins 6CTA 8.3M
    Bill, my boat is configured with two deep cycle Group 31 on the house side, two dual purpose Group 31 on the Stbd side and two Group 31 for the 24v bow thruster. I almost always use the cross-over to start (which I read about here on the forum) and had absolutely no problems starting, even after 30hrs on the hook. When I just use the respective starter (no cross-over) it also cranks the engines just fine, irrespective of which bank is used.

    I had a similar set-up in my previous 340 with two deep cycle Group 31 having duty for starting a 8.1 MerCruiser, house and generator - never had any problems (and no cross-over used!).

    Future plans are to look into what is required to separate off the Generator for its own start battery and adding a couple more deep cycle on the house side (we like to anchor out).

    I don't think you will have any trouble with the deep-cycle batteries for starting.
  4. ZZ13

    ZZ13 Well-Known Member

    Nov 25, 2009
    Lady's Island, SC
    2001 400 Sedan Bridge
    Cummins 450 Diamond
    Thanks for all the inputs. As I mentioned I have four dual purpose group 27 wet cell. The starboard/house are still going strong. The two port have faded enough that hey won't start the engine on their own. So what I decided to do is remove the two port batteries and move the two starboard to port. Then buy two group 31 deep cycle wet cell for the starboard/house. When the port fail I'll then put the same group 31 deep cycle wet cell there.
    scooper321 and my3sons like this.
  5. Nepenthe

    Nepenthe Member

    Aug 29, 2011
    Fontana on Geneva Lake, Wisconsin
    400 Sedan Bridge
    7.4L Mercruiser
    I'm in the same club regarding batteries and my original charger. I typically buy dual-purpose "marine" batteries from Walmart or Autozone, which I believe are both manufactured by Johnson Controls. They work flawlessly for 4-5 years and get replaced. With that said, I don't spend extended time on the hook.
  6. Gregl

    Gregl New Member

    Oct 27, 2018
    1999 Sea Ray 400 sedan bridge
    Volvo Tamd 73 410 Hp.
    Hey everyone, speaking of batteries, I want to move my 2 batteries for the bow thrusters out of the engine room and possibly put them in the area where the bow thruster is. Not sure if there is room. Has anyone else done this? Thanks in advance, Greg
  7. TotallyGross

    TotallyGross Member

    Mar 19, 2016
    Glen Burnie, MD
    2002 400 Sea Ray Sedan Bridge
    Pho King Gross
    Sweet Cummins 6CTA 8.3
    Hey all,
    Have any of you ordered a fake wood trim piece for this area when you installed a new MFD?
    If so what was it called, I think I prefer to order one over a piece I need to craft to fit the hole. My skills are more suited for wiring and technical than finish type aesthetically pleasing stuff. LOL
    PS Also I know flounder pounder and some sites have these, Was trying to find the part number or item if it is made. TIA!~

    IMG_7988.jpg IMG_7989.jpg
    Last edited: Jan 21, 2020 at 1:05 PM
  8. scooper321

    scooper321 Well-Known Member GOLD Sponsor

    Jul 4, 2015
    Baltimore, MD
    2003 Sea Ray 400DB
    Twin Cummins 6CTA-8.3
    I believe this is the panel:

    TotallyGross likes this.

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