aphinney
10+ year member
CarAudio.com Elite
ok..doin the big 3 with 1/0 gauge wire, either getting a 260a or 240a add-on alt so that i have my factory and my ho alt. now here is my question...i was thinkin of running two deep cell 690 cca battery and my everstar maxx under then hood. now should i do this?? would this help out with voltage and all that ?? or is it just a waste of money ?? if i do get two batts do i have to get an iso per batt or just one iso for the aux batts??