adding an extra battery
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=61032
Printed Date: July 18, 2025 at 8:15 PM
Topic: adding an extra battery
Posted By: rocafella1
Subject: adding an extra battery
Date Posted: August 09, 2005 at 8:50 PM
right now i have a stock 104 amp alternator in my suburban i want to add a dry cell battery what accesseries do i need to install it and how do i install it help is needed
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if its not broke dont fix it
william
Replies:
Posted By: mini14
Date Posted: August 16, 2005 at 9:58 PM
well depends on where you will mount it look at this https://hzemall.com/our_gallery/installs_tims/suburban/cover.htm this guy does great work well anyway you can wire it under the hood like he did but if you have no room you can place it in the back of the truck there are two options the recommended one for a stock alternator is an isolator. its pretty much a relay that lets you use one battery strictly for aux applications and keeps one for the load it was intended for if i had two different batteries i would do this but if you can shell out the extra dough get two of the same battery and wire them in parallel all you need as far as parts and what not is an isolator if you will use the first approach and some heavy gauge wire (4 or 0 gauge) so that can be in your cargo space you can also use the isolator and have it under the hood i would recommend at least 8 but prefer 4 gauge here if you are to wire them in parallel then you should pretty much use the same wiring it'd be best to use 0 gauge everywhere you will need a way to connect the wiring to the battery on ebay you can get a lot of 9 terminals for 6.75 good deal just wire the positive to positive and negative to negative for parallel good luck let us know how it turns out
Posted By: mini14
Date Posted: August 16, 2005 at 10:05 PM
im sorry for parallel run the positive to positive and ground both negatives
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Alpine CDA-9847---Alpine MRP-T220---Eclipse 36201---6.5" Type S Components---6.5" Type S Coaxials---2 10" Thunder6000's Isobaric
Posted By: jettagli03
Date Posted: August 16, 2005 at 10:20 PM
you know adding a an extra or replacement battery only helps when your car is off right? if you're looking for more power while running the car you should upgrade your alternator
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Posted By: youngone
Date Posted: October 02, 2005 at 1:48 PM
you are correct positive to positive and then ground negatives. but mack sure the negatives are connected first.
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