Do i need a battery

[Diesel250]

I would go 1/0 there also..

I will, just haven't had the time lately...

[audiobaun]

I dont like to see below 13.2 if at all possible,im at 14.5-6, and low notes hit around 13.4 lowest ive seen so far in that truck,i may invest in another agm battery,to see if i can get back up to 13.6 lowest,I have 2 agm batts under the hood, and a 255 amp alt already/0ga on all/Big 5 i call it

[smoka]

I dont like to see below 13.2 if at all possible,im at 14.5-6, and low notes hit around 13.4 lowest ive seen so far in that truck,i may invest in another agm battery,to see if i can get back up to 13.6 lowest,I have 2 agm batts under the hood, and a 255 amp alt already/0ga on all/Big 5 i call it

Batts won't help unless you drop below 12.7v.