Posted by JohnD [173.245.56.71] on Saturday, June 04, 2016 at 05:48:13 :
In Reply to: Electrical specialists, please posted by Jerry in Idaho [162.158.68.47] on Saturday, June 04, 2016 at 02:00:03 :
Here is what I would do.
This will allow your outboard when running to charge only the battery that needs the most charge at any given moment.
It is fully automatic.
If you have a dash volt meter, add a simple toggle switch so you can check battery voltage on either battery anytime you want - just to make sure everything is working right.