But when you are connecting or disconnecting things from the wet cell
battery terminals,you have to think about just what one spark can or
could do.

But goes back to common sense. You unplug the power from
the *radio* first, then unplug the charger, then you can unhook
the terminal connections with no spark. Yes, the deep cycles
can be heavy cuz they often have more plates. When I buy
batteries, I always go for the largest , and heaviest among a
certain price range. Usually, they will tend to be the most
capacity. The sealed batteries, gel cells, etc, are fine, but they
cost too much vs the regular marine deep cycles.
I think the one I bought about a month ago was hummm, maybe
60-65 bucks...I fergot... Another thing about the deep cycles is
they can sub out in the vehicles no problem if one of my auto
batteries die..
MK