[giff1]

In my 3500 exp. My house batteries are four 6 volt golf cart batteries wired for 12 volts.
Neglected to add water last year and the batteries boiled dry and will not charge. I would like to change to 12 volt deep cycle batteries, wet acid. How many and what size batteries would work for my house?

[ReelMagic]

I'm surprised to hear you have golf cat batteries in the boat... I don't believe they were standard when the boat was delivered by Tiara.... I have a 2003 Tiara 38 Open with 6 GEL Batteries; 3 for the house and 3 for the engines/genertor.. After 17years I changed them with 6 new GEL batteries as the alternators, House and engine chargers were set up for GEL batteries... Need to find out what was provided by Tiara and what you house, engine & alternators are set for. M2C

[giff1]

I have 31 group starting batteries, wet acid, came with the boat when I bought it. Also, the four golf cart batteries for the house came with the boat.
What size House Batteries do you have?

[ReelMagic]

All 6 batteries in the boat are group 31 Gel Batteries which were the ones installed/shipped when the boat was new

[hiccup]

ReelMagic is correct, need to start with your charging system. What model shorepower charger do you have? What do have for alternators? Are they externally regulated?