Many battery set up check it out

[knukonceptz 10+ year member]

Isolators = bad for audio use, they cause .4V loss just from powering them. The more reserve power you have (ie large batteries) the harder it will be to drop below 12.5V Anything above is coming from the ALT, there is some charge above 12.5 in the batteries, but more of a surface charge then anything.

1/0 is more then sufficient between batteries - REMEMBER the shorter the run, the smaller the wire can be. 1 foot of 4 gauge can handle some serious juice. Going all out though, 1/0 @ 1ft will handle well over 5500A!!! at the same loss as 20ft of 1/0 at 275A just an FYI......

 

[killahbean 10+ year member]

Isolators = bad for audio use, they cause .4V loss just from powering them. The more reserve power you have (ie large batteries) the harder it will be to drop below 12.5V Anything above is coming from the ALT, there is some charge above 12.5 in the batteries, but more of a surface charge then anything.
1/0 is more then sufficient between batteries - REMEMBER the shorter the run, the smaller the wire can be. 1 foot of 4 gauge can handle some serious juice. Going all out though, 1/0 @ 1ft will handle well over 5500A!!! at the same loss as 20ft of 1/0 at 275A just an FYI......

in other words Isolators ****!!!!

 

[audiolife 5,000+ posts]

i havent charged my battery for almost a yr and every saturday i charge race car batteries on it for 4 or 5 hours @6 amps voltage. at rest 13v,with key on, headlights on stereo on slightly (1/4 up) still reads 12.8...a good battery that rests at 12.5 can take a while to charge back up. from a 14.2 volt power supply it can draw 5+ amps for a few hours even wet cells

 

[jeeper07 5,000+ posts]

thanks guys for all the help do you all think im safe with 0 gauge

 

[djman37 5,000+ posts]

Isolators = bad for audio use, they cause .4V loss just from powering them. The more reserve power you have (ie large batteries) the harder it will be to drop below 12.5V Anything above is coming from the ALT, there is some charge above 12.5 in the batteries, but more of a surface charge then anything.
1/0 is more then sufficient between batteries - REMEMBER the shorter the run, the smaller the wire can be. 1 foot of 4 gauge can handle some serious juice. Going all out though, 1/0 @ 1ft will handle well over 5500A!!! at the same loss as 20ft of 1/0 at 275A just an FYI......

is there an extra zero there? good to know either way.

I can and will run 3/0 into my amps

 

[knukonceptz 10+ year member]

No, no extra zero that is Five Thousand Five hundered amps, based on voltage loss @12v for 1ft of copper 1/0 cable you will have 9.25% loss over that 1ft run. The SAME loss you get on 20ft @ 275A (all on a 12V circuit)

Thats why I stated, 4 gauge at 1 foot can handle some juice, like 1800A at a foot, crazy, I know but the math says it works......

 

[jeeper07 5,000+ posts]

where should i get my wiring guys ? i want some good stuff

 

[audiolife 5,000+ posts]

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