It is a rare occasion when my main battery dies, but when it does it is a major pain to get out, disconnect and move my trolling motor battery to the back of the boat. I also do not like the idea of carrying jumper cables all the time. That would be easy, but still would have to unearth both batteries, etc.
What I would like to do is to have both batteries permanently wired together....but on a switch. I don't want to be able to select from one battery to other, I just want to flip a switch and have the trolling motor battery jump the main battery. I have an extra battery switch and thought I could do this:
Run a straight wire (appropriate gauge) to/from negative terminal on each battery. This will be permanently attached. Then, pretty much the same on the positive side, but I will run it through a battery switch that will remain OFF unless I need to jump the main battery. I have a spare BEP battery switch that I can use. My only concern is will it hurt anything (or limit any battery performance) with the negatives connected constantly? Does the negative need to be switched as well? (I searched for other posts regarding this, but couldn't find any info)
thanks!
KRS
PS - I do have a dual bank on-board charger, but have run into time where I haven't been able to plug it in....or FORGOT to!!!!
What I would like to do is to have both batteries permanently wired together....but on a switch. I don't want to be able to select from one battery to other, I just want to flip a switch and have the trolling motor battery jump the main battery. I have an extra battery switch and thought I could do this:
Run a straight wire (appropriate gauge) to/from negative terminal on each battery. This will be permanently attached. Then, pretty much the same on the positive side, but I will run it through a battery switch that will remain OFF unless I need to jump the main battery. I have a spare BEP battery switch that I can use. My only concern is will it hurt anything (or limit any battery performance) with the negatives connected constantly? Does the negative need to be switched as well? (I searched for other posts regarding this, but couldn't find any info)
thanks!
KRS
PS - I do have a dual bank on-board charger, but have run into time where I haven't been able to plug it in....or FORGOT to!!!!