2000 340 battery

Discussion in 'Sport Cruisers' started by Gasman, Jan 29, 2018.

  1. wayne0

    wayne0 Member

    269
    May 4, 2014
    Newburyport, Ma.
    2000 340 Sundancer
    Twin 7.4 ltr.V-drives
    OP, This is the set up we have. Tbrown, you'll need a new charger for the AGM's
     
  2. CJM

    CJM Member

    61
    Aug 26, 2010
    CT
    1986 250 Sundancer /
    2000 340 Sundancer
    5.7 Merc /
    Twin 7.4 Horizons
    I bought the same charger and installed it last fall, great product.. It looks like the old Promarine Chargers have the same life span.. Good luck..
     
  3. Gasman

    Gasman Member

    73
    May 30, 2015
    Great Lakes
    2001 29' sun dancer sold
    2000 340 sundancer
    Twin 5.0 mercruiser
    7.1 v-drives
    Ok thanks for your feed back... I have a few more questions....1) can I just run one deep cycle battery for the house and 3 dual purpose for motor and genni... but if the starboard motor and house batteries are connected in parallel if I change those to to deep cycle will that be strong enough to start the motor....
     
  4. be_prepared

    be_prepared Member GOLD Sponsor

    196
    Oct 12, 2015
    Mattapoisett, MA
    2002 Sea Ray Sundancer 340DA
    Twin Mercruiser Horizon 8.1 inboards
    I replaced all 4 of mine in an '02 340DA, same configuration as yours, with general purpose AGM's (went up from 27's to 31's). None of them are "starter" batteries, but I never have trouble with the gen or engine starts. The 2 bat house bank is able to run both fridges overnight on the hook with no problem. I usually fire up the genny in the morning to freshen things up if I'm staying another day.

    I do have a newer charger that has an AGM setting to do the 3 banks.
     
  5. tbrown1985

    tbrown1985 Member

    37
    Sep 14, 2017
    Chattanooga, TN Franklin, TN
    340 Sundancer 2001
    230 Signature BR 1997
    7.4 Mercruiser V Drives
    7.4 Mercruiser Bravo I
    I just installed 4 of the Duracell 31m AGM's and also upgraded me onboard charger. World of difference. My interior lights are even brighter. Batteries plus also gives you 10% off for online order, store pickup but I just went in and bought them and they still gave me the 10% off. Charger is ProNautic 12-30
     
  6. CJM

    CJM Member

    61
    Aug 26, 2010
    CT
    1986 250 Sundancer /
    2000 340 Sundancer
    5.7 Merc /
    Twin 7.4 Horizons
    The batteries that are set up in a parallel connection should be exactly the same. The deep cycle is will be used for the house, they will give you enough starting power.. The other 2 batteries do not need to be deep cycle, staring power (CCA) is more important. Also, do not mix AGM's with acid.. Go one way or the other.
     
  7. Gasman

    Gasman Member

    73
    May 30, 2015
    Great Lakes
    2001 29' sun dancer sold
    2000 340 sundancer
    Twin 5.0 mercruiser
    7.1 v-drives
    Ok
    Ok thanks I'll probably go with Duracell from battery plus agm's 2 deep cycle on the starboard side and 2 800cc on the port side....
     

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