What electrical will I need for a 3000 watt system?

[xPexelz]

I have an 05 Grand Prix stock everything and wondering what electrical I’m going to need to power my skar 3500. Does anyone know how many amps it draws?

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[Popwarhomie 5,000+ posts]

It says in the owners manual 350 amp fuse rating.

That is before box rise comes into play. I would suggest a 250+ amp alt and a group 31 rear AGM.

 

[audio_phill 10+ year member]

Will depend on load. The lower the impedance the higher the draw. 3500 divided by voltage (13ish) x 1.26 = a good estimate.

 

[audio_phill 10+ year member]

Look into the 66160 LTO banks. A 6 cell bank of good quality cells would have no problem with that amp.

 

[xPexelz]

It says in the owners manual 350 amp fuse rating.

That is before box rise comes into play. I would suggest a 250+ amp alt and a group 31 rear AGM.

Lets say I get the second battery for the amp would I be able to wire it to the battery I have now? I’ve seen a lot of people say they gotta be matching batteries or close. Will I need an isolator?

 

[Popwarhomie 5,000+ posts]

Lets say I get the second battery for the amp would I be able to wire it to the battery I have now? I’ve seen a lot of people say they gotta be matching batteries or close. Will I need an isolator?

Well what battery do you have now? Is it a lead acid or an AGM? But yes you can. Its not always recommended to run lead acid batteries with AGM but it's actually fine. Just not ideal. No you don't need an isolator.


Stock vehicle electricals can normally support 1200-1500 watts rms.

 

[Jeffdachef 5,000+ posts]

How many real world amps it draws will depend on your box rise. Get a voltmeter and see what you are charging at and add electrical upgrades as needed. You can go big 3 and alternator or big 3 and AGM battery. Alternator route is superior but more costly. Battery route is a temporary band aid cheaper route just make sure you keep above 12.0 volts on your hardest bass drops.

 

[xPexelz]

Well what battery do you have now? Is it a lead acid or an AGM? But yes you can. Its not always recommended to run lead acid batteries with AGM but it's actually fine. Just not ideal. No you don't need an isolator.


Stock vehicle electricals can normally support 1200-1500 watts

How many real world amps it draws will depend on your box rise. Get a voltmeter and see what you are charging at and add electrical upgrades as needed. You can go big 3 and alternator or big 3 and AGM battery. Alternator route is superior but more costly. Battery route is a temporary band aid cheaper route just make sure you keep above 12.0 volts on your hardest bass drops.

Gotcha, will probably go battery route and get a volt meter. I did find a 250 amp Alt on Js Alternators for $289. I have no idea if it’s a really good source I’ve read bunch of reviews and I’d say it’s 75•/• good 25•/• bad. At that cost I could do it but just has me wondering if it’ll work or if it actually push out 250 amps. Have you ever heard of the company?

 

[Popwarhomie 5,000+ posts]

Yes. They are a good budget alt company.

 

[CaTcH21]

Is it a lead acid or an AGM?

AGM is a lead acid battery. You get different types of lead acid.

 

[Popwarhomie 5,000+ posts]

AGM is a lead acid battery. You get different types of lead acid.

Flooded lead acid is not the same as absorbed glass mat. AGMs have a slightly higher resting voltage.

 

[CaTcH21]

Flooded lead acid is not the same as absorbed glass mat. AGMs have a slightly higher resting voltage.

Yes sir.

My point was that both are lead acid batteries, but different types.