Is it just a matter of more batteries?

[Seattle206 10+ year member]

I see cars on here with 250amp alts running 8kW's+ with a bank of 10 batteries or somethin similar. i have a 250amp alt with 1 deep cycle in the back. is the only difference in running that much power the amount of batteries? reason i ask is because i frequently see when people want to add a second battery to a stock elec a lot of times people say no because it will burn up the alt. how then can 1 250amp alt power so many batteries when 1 130amp alt would struggle to charge 2 batteries?

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[SeanDub 10+ year member]

In my opinion, unless you're running a hell of a lot of power at high volumes constantly, a 130 amp alternator should be fine to charge 2 batteries. Hell, my little stock alternator charges my front battery and second battery just fine, and I run about 3kw daily.

 

[Seattle206 10+ year member]

cool ok...but with a big alt is the amount of power i can run proportional to the amount of battery power i have?

 

[Anniku989 10+ year member]

All depends on hundreds of different factors, can't give a definite answer

 

[Seattle206 10+ year member]

anyone else with an answer that isnt incredibly vague?

 

[Anniku989 10+ year member]

no

 

[Seattle206 10+ year member]

no

not to be an *** but the second post in this thread was probably more helpful then anything youve posted so far.

 

[Anniku989 10+ year member]

No, you can be an ***, I'm being one...

Horrible 2008 so far

 

[Seattle206 10+ year member]

umm..thats ..unfortunate? my 2008 has been goin fairly good..if it helps i can invite u to my party on friday...

 

[Fear Of Theive 10+ year member]

anniku shut the hell up..you had to ask questions before also? Seattle,I'm guessing it will be fine my buddy has a camry and we were gonna put 2 battery's in their but He decided against it

 

[Seattle206 10+ year member]

anniku shut the hell up..you had to ask questions before also? Seattle,I'm guessing it will be fine my buddy has a camry and we were gonna put 2 battery's in their but He decided against it

thanks but that doesnt answer my question at all....

 

[Anniku989 10+ year member]

How big of alt your car have? How many (and what type batteries) you have? And whats your system?

That'll help if you want to know if you need more batteries or not

 

[Seattle206 10+ year member]

my question isnt whether or not i need more batteries right now.

i have 250amp alt. deep cycle up front and in back.

my question is....im assuming my limit is around 3500rms ish..right now. how would i have an electrical that can support 4000+ while keeping a 250amp alt. is it just adding batteries? because i see vans with 1 250amp alt charging a bank of say 15 powermaster batteries running 8kw+.

 

[Anniku989 10+ year member]

You shouldn't have a problem with 4000rms TBH.

Not really relevant, but I was running 2000rms off of a stock battery, and stock alt (grand am) for a little over a month with no issues. I don't see how two deep cycles and a 250a HO alt won't handle it.

If it doesn't though, I'd go and add an extra battery, if that doesn't help your probably looking at dual alt's then.

Who's van are you referring to btw? Hell, Steve M's tahoe has two alts for the 4 btl's...

Edit:

Shouldn't really say I was running a "stock" battery, but its not a deep cycle

 

[Seattle206 10+ year member]

doesnt steve have 4 alts now? maybe that was an old thread..

well on a sidenote...now i need a sub that can handle 3500rms...anyone got one for me?>