Best powering option? 2 batteries? Isolator? H/O alt?

[lyons238]

So I have a 2013 subaru wrx sedan which will be running 2600w rms at most. The stock alt is a 110A alt. I would like to hold off on getting a new alternator for now.i plan on doing the big 3 as well.

I did order a XSPower D3400 to replace my under hood battery, is that a good idea having a deep cycle up front? I was also considering running one of those small batcaps in conjunction with a Knu knf60 distribution fuse block. Should I do this or will the D3400 be enough for now? If I should add the batcap or should I get a battery isolator or just run them together? If I do use the D3400 and the smaller batcap battery in the trunk would that put too much strain on the alternator for the time being until I get a H/O?

Just wanting some opinions on what I should do for now to get this system up and running without going all out on a H/O alt just yet. Thanks.

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[Dub7sonoma Premium Member]

If your not upgrading the alt, I would recommend around 300ah of battery. That xs d3400 is like 60-70ah.

 

[massivespl]

For 2600watt u should have like a 250alt and 34 under good and d3100 in back.

But if your not upgrading alt u need 2-3 d3100 in the back

 

[adulbrich 5,000+ posts]

D3100's are good, like suggested. I've got one in the stock battery location, and that's it. I have plenty alternator for now though

 

[lyons238]

So would adding that small back battery help or be sufficient until I upgrade my alt? Also will this strain the alt too much? Lastly should I get an isolator or just run the batteries through the distribution block?

 

[lyons238]

For 2600watt u should have like a 250alt and 34 under good and d3100 in back.But if your not upgrading alt u need 2-3 d3100 in the back

What alternator did you get?

 

[massivespl]

I've use dc power and singer and I just bought two Excessive amperage alts

 

[lyons238]

I've use dc power and singer and I just bought two Excessive amperage alts

do you have any recommendations for alternators that are affordable for my given setup? also should I run an XSPower secondary XP series battery in the back instead of their primary battery sources?

also how should i wire it all up? just in series with a Knu KNF60 distribution block?

 

[lyons238]

does anyone know if the dcpower alternator will fit a 2013 wrx? it stops at year 2010?? also do you think 2500w rms needs 2 batteries and a 250-270amp alt?