How much electrical upgrades I need for my set up right now?

[bajbass]

Hey just wondering what electrical upgrades I need for my current set up ,I have a sundown scv1500d and a ppi 900.4 for mids so I'm guessing it's around 2100 watts rms total but eventually ill upgrade to a 2500 watt amp down the road but my 2 xfls seem to be doing quite well with the the 1500 watts atm..btw I have a 110 amp stock alternator and a 850 ca battery I have no idea how much ah it's rated at...

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[THATpurpleKUSH 5,000+ posts]

Ho alt around 250-300a and upgraded main battery would sustain that level of power.

 

[Boomin_tahoe 5,000+ posts]

Big 3 too since it wasn't mentioned.

 

[bajbass]

Hmm ok thanks but can I get away with a bigger main battery and big 3 for my current set up before i upgrade?

 

[THATpurpleKUSH 5,000+ posts]

Hmm ok thanks but can I get away with a bigger main battery and big 3 for my current set up before i upgrade?

You would need a huge group 31 that is 100ah and you will still have some voltage drop if you run the system hard for extended periods of time.