which battery

I just put in 1 more alpine mrd-m1005 amp in my '02 nissan pathfinder. Each one of the amps powers a 12" re audio sx sub, im trying to find out what kind of second battery would go good with my set up. I also have an mrv-f345 4 channel for my components.

Any suggestions?

Does that 345 push your components enough to match the subs? Just curious. Deep cycle batteries rock! Everything else in order?This is what I do for FUN!

It does a good job but when the subs hit, they take a lot of power. I know I need a deep cycle, I just don't know which one

Big Three. HO Alternator. Second Battery maybe. HO Alt. If you can't charge your primary battery, then you can't charge a secondary one. This goes for batteries and Caps for that matter. The Big Three is the easiest, cheapest upgrade. I recommend Odyssey batteries. Not a fan of Optima. Deep cycle shouldn't be an automatic choice. Search for "Red or Yellow Top".

I'm in the process of doing the big 3 kinda hard though because of how everything is wired and located. I will look into those batteries and any other suggestions on batteries.

I just recently bought a kinetik hc-800 and am very happy with the results. The second battery makes a big difference in voltage drops and seems to allow things to run at a constant level. It is really alot better than a cap and all my light dimming is gone. Im running an AQ2200d and an alpine mrp-300 and there is plenty of juice. I have an optima yellow top up front but im not as pleased with it. It doesnt last long under heavy current. The kinetik is stronger in my opinion.  I will eventually put a 1400 kinetik upfront and then i know i will have juice!Enjoy Life theres plenty of time to be dead

Here is some FREE advice..... read what spiz has to say !