So I bought two group 29 125AH batteries yesterday to power my stereo which I plan to wire in parallel as one 12V bank. My question is, is 2 gauge battery cable sufficient to connect the battery terminals together? If not, then what gauge should I use? The two batteries will be sitting right next to each other so the cable runs will be very short. The batts will be powering three amps - a JL M6600, an Exile SM600.1, and an Exile 1K Harpoon.

The batteries I bought are Group 29 Everlast Maxx Marine batteries from Walmart ($85/each) with an 18 month direct replacement (not prorated) warranty. I've been very happy with the Kirkland Group 27 I had from Costco so I figured these Walmart batts should do the job. The Group 29's have a little more amp hours than the Group 27's (125 vs 115). Any direct experience with the Everlast Maxx Marine, good or bad?

Thanks,

Al