Dual Batteries

I have one new battery that came with the TT when I bought it a month ago. It is an excide???? and I will have to open the batt box and see which one it is. I was thinking of two of the large marine deep cycle batts. Comments and suggestions are always welcome.

When wired together they should be the same capacity and age as they essentially become multiple cells of one battery. As such if one is weaker than the other; the weaker will draw down the stronger.

If your batteries are considerably different, you might want to use just one at a time. Same amount of capacity, just not as convenient.

The ideal situation would be both batteries would be the same make and same age.

Then they should charge and discharge at the same rate.

just my thoughts here...

Roy Ken