Battery question ??

[fishwithron2]

Anybody knows the difference wording on the following batteries ?? both 12 volts

Sears Die Hard has Cold Cranking Amps CCA 550
Napa Marine Cranking Amps MCA 1000
What's the difference with MCA against CCA ???

Thanx

[scottsweet]

CCA is cold cranking amps
MCA is Marine cranking amps.

MCA ratings are at 32 degrees F, while CCA is at zero degree F.