Need help keeping voltage up

[My63impala 10+ year member]

Ok here is what i got right now.

2awg wire from front car batt (Normal batt) to a batt isolator and then another 2awg wire from the isolator to two rear batt in the trunk both are just auto zone marine deep cell batts. got 2awg for both batt in the trunk to wire them together. And alternator wise i got a 180max and am struggling to keep 12 volt with out my subs playing when i run my lights or windshield wipers it goes below 12 and when i run my air compressors for my air ride setup it goes below 12? What is needed to get my voltage up. Better batt bigger alt what? //content.invisioncic.com/y282845/emoticons/verymad.gif.3f39c5c2fd57527b671fad3efdfac756.gif

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[Stalin-ohaulic]

Voltagra

 

[its_ray_ray 10+ year member]

sounds like something is draining the power in all ends. not just the system.

 

[skittlesRgood 10+ year member]

so it never gets above 12v? id say its your alt. maybe a dead battery thats dragging everything down...

 

[My63impala 10+ year member]

i have 2 batt gauges 1 for front batt and one for my 2 batt and the 2 in back read 13 or 12 and the front goes from 12 to11

 

[csu87 10+ year member]

id say your alt isnt charging properly and seems like the front batt is starting to go as well

 

[skittlesRgood 10+ year member]

front batt might be dead then. get them tested 1st. when yo ustart your car does it dip into 10v? thats a good sign that its a bad battery.

 

[My63impala 10+ year member]

funny u say that because it seems like when i first start it and go in reverse out of my driveway am at 10 volt but when i go forward it goes up to 12max i dont think i have seen my front batt past 12

 

[djman37 5,000+ posts]

Ok here is what i got right now.2awg wire from front car batt (Normal batt) to a batt isolator and then another 2awg wire from the isolator to two rear batt in the trunk both are just auto zone marine deep cell batts. got 2awg for both batt in the trunk to wire them together. And alternator wise i got a 180max and am struggling to keep 12 volt with out my subs playing when i run my lights or windshield wipers it goes below 12 and when i run my air compressors for my air ride setup it goes below 12? What is needed to get my voltage up. Better batt bigger alt what? //content.invisioncic.com/y282845/emoticons/verymad.gif.3f39c5c2fd57527b671fad3efdfac756.gif

bold might be your issue.

 

[My63impala 10+ year member]

bold?????

 

[My63impala 10+ year member]

ok not sure what he meant but is there any way to run my back two batt at 14v since the front and back are separated by isolator

 

[djman37 5,000+ posts]

bold?????

sorry, item in bold. Battery Isolator.

 

[My63impala 10+ year member]

you think my isolator is causing me to not go higher than 12v how ?

 

[smoka 10+ year member]

What size amps are you running.

I'm running a little more than 2krms, I have a stock 130a alt, and two marines batts in back. I got rid of the front batt so I wouldn't have to deal with any isolators. My voltage doesn't drop below 13v so I'm happy.

 

[Marlo Stanfield 10+ year member]

^^^ Like he said, how much power are u running and what size alt do u have?? But like skittles said, sounds like your batt up front it what may be causing this to happen.