Prowlersfish,
If your boat is the one shown in your icon photo it is not what we would recommend for the application.
Typically if your boat has an AC distibution system we would automatically recommend a dry compartment charger there are a few reasons for this but the most relavant are the following.
1) Dry compartment chargers are designed to serve as a power supply maintaining house loads while charging.
2) Dry compartment chargers will allow you to charge batteries of difference capacities without creating an imbalance.
I hope this is the only battery this charger is charging. We like to use this for a rule of thumb (Total Amp Hour Capacity of the batteries being charged X 10% = Amp battery charger you should be using. For Example (4) group 31 batteries 125 amp hours each = 500 Amp Hours worth of batteries x 10% = 50 Amp battery charger.
Let me know if you have any questions I would be happy to address.
Jim
Jim I am not sure what you mean by a AC distribution system unless you mean shore power ? the 12 volt loads are very light when at the dock under way the engines supply 12 volt power for the heavier loads like radar and other electronics , I am still not under standing the need for a "Dry compartment" charger . I don't know if my boat ever had one (I did have a inverter charger I got rid of . as far as charging batteries of difference capacities it only charging 2 of the same size and it made for charging a cranking and a house Battery or so the info said was this incorrect ? the 3rd battery in the boat is not hooked up to the charger (genset battery ) I thought about going to the prosport 20 plus( mine is not a plus) to charge all 3 ,but from what your saying I need a different type of charger ? and at what cost ? Dry compartment chargers how costly
Thanks