I replaced my old Interstate deep cycle marine battery it was shot. On the battery decal it had 675 CCA (Cold Cranking Amps) and 845 MCA (Marine Cranking Amps).
The new battery I bought from Auto Zone which is a dual purpose starting and deep cycle battery only says 800 MCA (Marine Cranking Amps). My question is what is the difference between Marine Cranking Amps (MCA) and Cold Cranking Amps (CCA)?
When I asked the punk at Auto Zone this his reply was: DUHHHH? I don't know dude.