Here is what I would like to do. I have a 31’ with bow thruster. I am having a stern thruster installed during winter layup. Right now I have 2- 8d lead acid batteries. 1 engine and 1 house. The bow thruster runs off the house battery, but most of the time while running I am on both. All is good . With the addition of the stern thruster I would like to add a group 31 AGM in the stern compartment very near the thruster. This will allow the use of both thrusters at the same time while taking the load off the 8d’s .
What would be the best way to link the batteries . Should I have them run heavy gauge back to the 8d house battery or should the stern battery be a stand alone and isolated with only a charging circuit .
What would be the best way to link the batteries . Should I have them run heavy gauge back to the 8d house battery or should the stern battery be a stand alone and isolated with only a charging circuit .