Davo2378

battery isolators, do I need one??

21 posts in this topic

Ok so I have a brand new 3 month old Everstart Maxx 75N up front and I'm going to put two XS D1200 in the back.

My question is do I need a battery isolator?

And my other question is do I hook my 1/0 wire to the front battery or to the alternator?

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Ok so I have a brand new 3 month old Everstart Maxx 75N up front and I'm going to put two XS D1200 in the back.

My question is do I need a battery isolator?

And my other question is do I hook my 1/0 wire to the front battery or to the alternator?

No isolator needed. You run 1/0 from your alt to your front batt and then from that front batt to the rear batts.

Edited by UnderLoK

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ok I got it, and I already have the big 3 done so I just need to run the 1/0 to the back from the front battery.

But your sure I dont need an isolator

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Ok the isolator in my opinio no. About the 0gauge do the big 3 wich is 0 from battery to alternator and upgrading ur negatives to be specific it explains it better in the electrical section and use 0gaugd from the front to the back batteries

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No isolator needed unless you plan on playin music without the engine running for extended periods of time (not recomended)

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Fact: Battery Isolaters are only needed when you plan to play your system of a separate battery with the vehicle off. The Isolater then wont allow the stereo to drain which ever battery is being isolated so the vehicle can still be started.

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I was wondering if I could get a reply from nathan. I have a D3100 in the back and a d3400 in the front. I have read that having different size batteries can shorten the life of them, because when you turn off the car they can try and take current from each other to equalize. I was was just wondering if it would be recommended to isolate them, I have read the post above and from what I can see I do not, but I just want to make sure that this is 100% as i don't want 500 dollar in batteries to go down the drain, lol, within a couple years. I have a 130 stock alternator now, I was looking at a mechman 340 amp one possibly in the future, but I don't think I want this van forever, and it would be hard to sell that alternator afterwards, ha ha

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I do not recommend isolators in any car audio install, unless you are going to be running the system with the vehicle off and just pulling from the battery bank. Even then it is not necessary. Is it going to hurt running one...... No not really. You will drop a little voltage going through the isolator and it will cost some $$$, but if that is ok with you then run one.

As far as your application it will not hurt the batteries at all to not use an isolator. Different sizes of the same batteries doesn't matter and will not hurt the batteries. There are many installs where you can only get a D1200 under the hood, but you can load up the D3100 in the back. It will not hurt the D1200 to do it like that.

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