working on getting my system put back in, for the next season. Currently I have an xs power d6500 under the hood, a 270 amp mechman alt, big 3 in 1/0. I'm Going to go with d3100's for my secondary batteries. How many of them would be suffice to power the 40.1 @ .5ohm daily and keep my voltage stable? I was running just 1 2400 kinetik and my voltage dropped to low 12's very quickly. Hoping to stay in the 13's at full tilt.