hooking up muiltple batteries. how to?

[bubbagumper6 5,000+ posts]

Notice I recommended a relay, not an isolator.
And an added resistance in the circuit, such as an isolator, is not the same thing as a parasitic drain. The resistance added by an isolator only adds to the 'work' on the circuit/batts when current is flowing, a parasitic drain will always be there.

If your setup works for you, more power to you man. Again each individual situation is different, and you might get away with it just fine. But people should understand the situation before making their choice, so they can make an educated decision.

Cheers.

You missed my point, but it's fine. I agree with your last few statements.

 

[sleazebagger 10+ year member]

My batteries are still available and there better and cheaper then the dekas //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

 

[audioholic 5,000+ posts]

You missed my point, but it's fine. I agree with your last few statements.

If you want to further discuss the point you feel I missed, Id be glad to. I thought I addressed it directly, but maybe I did in fact misunderstand you. I wont get angry if you disagree with anything I say.

 

[bubbagumper6 5,000+ posts]

If you want to further discuss the point you feel I missed, Id be glad to. I thought I addressed it directly, but maybe I did in fact misunderstand you. I wont get angry if you disagree with anything I say.

Neh, it's all good man. I just have my doubts on how much that parasitic draw can really affect the system, I'd like to see some technical data but I imagine that's a hard thing to accurately measure.

 

[tenbux1970 10+ year member]

I understand what you are saying about parasitic drain.I am not really believing it in a real world set up though.I am running about 14,000 watts,and have a "normal acid" battery up front.One that has top,and side posts (one for the car,and one for the stereo).As for the other batteries there are 3 Cand D's,and 3 Kinetiks all 100Ah.I have had zero voltage troubles.

I just checked the voltage a few minutes ago (because of this article) they are sitting at 12.89 after not starting the car for 10 days.

The alt is a 320A with a pro series MLA,and 2 runs of 1/0.

 

[VWBobby 10+ year member]

You could either calculate the parasitic draw using the difference in voltage between the batteries, or you could wire an amp meter/clamp in line and measure the amperage flowing from 1 battery to the other while at rest. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif I'm curious as I plan on using an isolator in one of my systems to prevent my amp battery from draining my starting/engine battery (different types).

 

[tenbux1970 10+ year member]

You could either calculate the parasitic draw using the difference in voltage between the batteries, or you could wire an amp meter/clamp in line and measure the amperage flowing from 1 battery to the other while at rest. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif I'm curious as I plan on using an isolator in one of my systems to prevent my amp battery from draining my starting/engine battery (different types).

I would think an isolator would seperate the batteries,so you do not run down the car starting battery while playing the stereo with the car not running.Other than that?

 

[bubbagumper6 5,000+ posts]

You could either calculate the parasitic draw using the difference in voltage between the batteries, or you could wire an amp meter/clamp in line and measure the amperage flowing from 1 battery to the other while at rest. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif I'm curious as I plan on using an isolator in one of my systems to prevent my amp battery from draining my starting/engine battery (different types).

That's not really relevant. The claim is that the parasitic draw shortens the life of the battery. However much is drained from the battery on a daily basis is immediately restored by the alternator when you start the car so that's of little concern. It would be difficult to accurately test/prove that a setup of that style shortens battery life simply because of the amount of time it takes for that process to happen.

 

[audioholic 5,000+ posts]

That's not really relevant. The claim is that the parasitic draw shortens the life of the battery. However much is drained from the battery on a daily basis is immediately restored by the alternator when you start the car so that's of little concern. It would be difficult to accurately test/prove that a setup of that style shortens battery life simply because of the amount of time it takes for that process to happen.

Current passed through the battery affects battery life, based on oxidization. That is not theory.

 

[bubbagumper6 5,000+ posts]

Current passed through the battery affects battery life, based on oxidization. That is not theory.

I didn't say it was, nor did I say I disagreed with you, you're still missing my point. I'm not contesting the fact that battery life is affected, I'm saying HOW MUCH of the life is affected is still unclear.

 

[audioholic 5,000+ posts]

How much is affected, or if you even perceive the affect, depends on each individual situation. Im not here to suggest otherwise, Im here to inform that parasitic drain is real, not just a theory, and should be considered when designing/installing a multi-batt system. People dont always perceive that they are giving themselves lung cancer when they light up, but they should be informed of that consequence.

 

[bubbagumper6 5,000+ posts]

How much is affected, or if you even perceive the affect, depends on each individual situation. Im not here to suggest otherwise, Im here to inform that parasitic drain is real, not just a theory, and should be considered when designing/installing a multi-batt system. People dont always perceive that they are giving themselves lung cancer when they light up, but they should be informed of that consequence.

This is the statement I disagree with. If the effect is negligible then there's no need to even consider it.

 

[Moble Enclosurs 10+ year member]

The consideration of including it into the install is based on the fact that, as mentioned, each situation is different. The same applies to design work that I do for enclosures. Consider all variables that have an effect regardless of its accountability of how much it does affect. Its because it is not a constant that this drain should be considered. Will it cause major improvements by adding it into the setup figures? Will it improve anything at all? Likely not. But the information is good to know in case your situation become one of the few major issues in which it may be a cause.

I only mentioned this because the same concept applies to what I do with designs. Factors like port placement are not a major effect in LF response, but people do still like to know what's the better option. And in some cases, differences are notices. Same applies here.

 

[audioholic 5,000+ posts]

This is the statement I disagree with. If the effect is negligible then there's no need to even consider it.

Who says the effect is negligible? Just because it appears to be in your case, and you dont seem to care that you are shortening the lifespan of your equipment, does not make it negligible for everyone.

 

[psy4s 10+ year member]

OMG You all are like a bunch of freakin' Kids.

As I am trying to do research in this whole .com Every question, If answered at all, ends up in a pissin' match. How about some yes or no answers?

I worked Road Construction using Solar Powered Message Boards. They used 8 huge batteries and we always changed them out together for this very reason, but then during the winter, there is not enough sun in Indiana to keep them charged. We would have to swap them out every other week. After a couple of times being brought back to the shop to charge, they all looked alike and it was no longer an issue. They would last several years. Batteries charge and discharge all the time, it is what they do. Any parasitic amount from one age battery to another is so miniscule compared to the draw from a vehicle clock, or the memory of the car Computer Memory, or the dome lamp unless one of the batteries is total crap with a dead cell, and we all know what that can do. What a stupid thing to get in an argument about. Answer the question and stop trying to one up each other you are just a bunch of little girls. Even if you agree you argue about how much you agree! I must be getting to old for this crap!!!!!