wakevortex wrote:
Really interesting info - thanks
Alex, when you say you isolate the starter battery, have you changed the wiring from the 1/2 both situation which is fitted to the boat as I understand it?
If so how do you isolate it ?
Im also interested why you would choose 6 volt batteries (presumably golf cart batteries or the like in series)
The onboard charger is interesting
I would assume that on shore power , the batteries are NOT being charged unless a charger is added by the owner inline somehow...is that correct.
Seems a good idea to have the batteries being charged when its on shore power..are there disadvantages to that in life of batteries etc?
What would a typical charger be and how is it connected?
sorry for all the questions ..this is all new to me .. !
thanks again
Four Winns has setup your boat to have the starting battery isolated from the house battery and systems. A quick check can be done to see what runs off each battery by only connecting one battery at a time and see what components work. Also, you have an isolator between the alternator and the two batteries that allows the single alternator to charge both batteries, but will not allow one battery to drain the other, kind of like a back flow preventer. The switch allows you to join the two batteries in case of emergency where you need the house battery to start the motor. Be careful because it will also allow you use the starting battery to run the house systems.
I believe your boat was equipped with a charger from factory as well. Perhaps another 248 owner can chime in. When your boat is docked and hooked up to shore power the charger should be on. This is a smart charger that will not over charge and will properly maintain the battery. My OEM charger didn't work when I got the boat so I replaced it with a new one.
The advantage of 2-6v over 2-12v is a 6v can have a higher amp hour rating than a 12v of the same size.
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