One of my batteries is Toast. 1 year old. Obviously didn't like the move from Portland to new York to Mississippi. ( was dead when it got to ny I think).
Anyway, looking to replace.
It's a group 24. Nobody around has a normal cranking marine grp 24 wih equal cca as what's in there.

Ay issue with having a slightly less cca battery? Not going with gel cells, but any other options or suggestions?

I really like the interstates I have run the past. The boat came with Deka batts. Nearest Deka dealer is in little rock. Not worth the trouble.