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Discussion in 'Sport Cruisers' started by Gasman, Jan 29, 2018.
OP, This is the set up we have. Tbrown, you'll need a new charger for the AGM's
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..
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....
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.
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
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.
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....