Post by bobrim2 on May 30, 2019 16:07:13 GMT -5
On my 2011 3060 Window Express, I have 3 batteries.
On the starboard side there is one. I believe that acts as a starting battery for both the generator and the starboard engine.
On the port side I have two batteries. I believe that these act together as starting for the port engine and house battery.
All three batteries are the same. They are all Interstate Marine Cranking batteries 1000 MCA, 800 CCA. None of the batteries are a deep cycle battery like I would expect for a true house battery.
Question 1: Is this the correct configuration? All 3 the same? I don't know what is right...just what was there when I bought the boat used.
Question 2: I think I have a problem with my port alternator. After sitting on shore power overnight, a volt meter on each battery reads 11.9 port and 12.6 starboard. While running, the starboard battery volts reads between 12.6 and 13, while the port only reads around 11.5. While at anchor, with anything drawing on DC power at all, I quickly reach the point where I can't even run the stereo or the blower. To return home, I have to start the starboard engine, then press a "parallel" button to start the port engine. Running home, the port batteries don't seem to regain power much at all.
Do you agree with the bad port alternator theory?
Thank you,
Robert
On the starboard side there is one. I believe that acts as a starting battery for both the generator and the starboard engine.
On the port side I have two batteries. I believe that these act together as starting for the port engine and house battery.
All three batteries are the same. They are all Interstate Marine Cranking batteries 1000 MCA, 800 CCA. None of the batteries are a deep cycle battery like I would expect for a true house battery.
Question 1: Is this the correct configuration? All 3 the same? I don't know what is right...just what was there when I bought the boat used.
Question 2: I think I have a problem with my port alternator. After sitting on shore power overnight, a volt meter on each battery reads 11.9 port and 12.6 starboard. While running, the starboard battery volts reads between 12.6 and 13, while the port only reads around 11.5. While at anchor, with anything drawing on DC power at all, I quickly reach the point where I can't even run the stereo or the blower. To return home, I have to start the starboard engine, then press a "parallel" button to start the port engine. Running home, the port batteries don't seem to regain power much at all.
Do you agree with the bad port alternator theory?
Thank you,
Robert
