I am adding a battery to the back with pos/neg runs of 1/0 wire, I have a 130 amp stock alternator on a 2000 mercury mystique so basically have 125 amps free( just a joke but its a low usage car), I am running big 3 1/0 at the same time. I do most listening with the car on and listen to everything except country and western,
I need to know what battery I need cuz if I understand right I don't need high AH if I run mostly with engine running and also
Can I get two or three smaller/lower AH and wire them somehow to get same effect as a larger one?
I can find 5 ah to 15 ah batterys for cheap and wondered if I can link them somehow to produce a 50+ ah power cell or is that necessary