Battery Question

[arizona 10+ year member]

So I looked around and can't seem to find an answer for my specific question.

I am probably going to put a kinetik 2400 in the trunk. I understand how to wire it all up and all that. My question is.... Lets say that I put a circuit break (instead of a fuse) on the pos line next to the second batt. Now if I wanted to play my system with the car off could I flip the break to break the circuit (from the front batt and back batt) and would the amps run only off the 2400 in the trunk?

I'm not sure because the battery in the trunk is going to be grounded to the chassis which would still be connected to the front battery.

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[seedubs1 10+ year member]

So I looked around and can't seem to find an answer for my specific question.
I am probably going to put a kinetik 2400 in the trunk. I understand how to wire it all up and all that. My question is.... Lets say that I put a circuit break (instead of a fuse) on the pos line next to the second batt. Now if I wanted to play my system with the car off could I flip the break to break the circuit (from the front batt and back batt) and would the amps run only off the 2400 in the trunk?

I'm not sure because the battery in the trunk is going to be grounded to the chassis which would still be connected to the front battery.

Right.....You won't draw any juice from the front battery if a fuse is popped or a breaker is flipped.

 

[jrwalte 10+ year member]

Which won't require you to flip a switch and is designed to do what you seek.

 

[seedubs1 10+ year member]

Which won't require you to flip a switch and is designed to do what you seek.

Except with an isolator, you won't ever draw power from your front battery with your amps.....If you ever want to. All depends on what you desire

 

[arizona 10+ year member]

Yea, I only wanted to do this every once in a while this summer when chillin out somewhere. I still wanted it to be hooked to the front most of the time. So the CB is what I am looking for?

 

[seedubs1 10+ year member]

?? yes you do...
you flip the isolator to "isolate" the rear battery. otherwise, how would they charge?

I always thought they just seperated the batteries. I don't use them, though.

So listen to what this man says. Go with the isolator.

 

[seedubs1 10+ year member]

i dont use them either. i run my batteries parallel. i'm not worried about killing them

Ditto. I don't just sit around playing music with my car off.

 

[arizona 10+ year member]

Alright, thanks for clearing it up guys.

 

[seedubs1 10+ year member]

it is my understanding that an isolator will act as if it's not there while "off" and run 2 batteries as if they are parallel.when switched "on" it separates them, allowing one to discharge leaving the other untouched.
am i wrong?

I was under the impression that it just seperated the batteries.....Meaning the underhood battery would be only for car features (lights, ac, etc), and the rear batt would only be used for the amps.....And it would allow the alty to charge both as needed.

But that doesn't sound right.....You're probably right. Like I said, I don't use them.

I'd prefer a CB anyways. I do know that isolators have a bit of voltage drop associated with their use.

 

[jrwalte 10+ year member]

Yea, I only wanted to do this every once in a while this summer when chillin out somewhere. I still wanted it to be hooked to the front most of the time. So the CB is what I am looking for?

Just remember to get a big *** circuit breaker that can handle several hundred amps depending on what amps you're running.

 

[jrwalte 10+ year member]

I found out my car can run over 2 hours on my HC1400 bat and still crank my car the hard way //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif Friend and I were messing with the alt and he forgot to connect the regulator harness to the alt so it couldn't produce any current. I drove around for 2 days before the battery went dead enough to cause my memphis to shut off and effect the performance of my car. I was listening at decently high volumes that whole time.

 

[seedubs1 10+ year member]

and i think CBs wear out and cause resistance

So pretty much any way you go about trying to do this, you get ****ed.

Why not just unbolt the + terminal from the rear battery when you want to do this?

Make sure to take out the rear fuse so you don't light things on fire as well

 

[jrwalte 10+ year member]

What if you ran a pos directly from the alt to the back bat and placed the isolator/CB on the pos line to the car bat? This way the car bat is seperated from the amps but the amps won't get any voltage drop, just the car electrical, which is no big deal?

But would that seperate the alt regulator from the demand of the amps and cause the alt to not increase its current when needed?

 

[seedubs1 10+ year member]

or don't do it in the first place
or just take the fuse out, instead of taking the entire wire off.

****.....I'm not thinking strait right now. I need to eat some food.

Your right. Just get an inline fuseholder and pull the fuse. Less voltage drop and resistive power losses than using a CB or Isolator.