was thinking about ratings on FLA batteries. noticed some SLI batteries have both CCA and RC ratings. compared to marine batteries the ratio of CCA and RC is different. with SLI batteries the CCA might be say about 500 and the RC might be about 90. looking at a marine battery the CCA might also be about 500 but the RC would be about 140. can the larger RC rating on a battery compared to another battery with the same CCA but smaller RC tell you something about the internal structure of the battery? i would guess the larger RC rating on a battery with similar CCA would suggest its a hybrid in design