Question about dual batteries
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=31502
Printed Date: July 18, 2025 at 6:10 AM
Topic: Question about dual batteries
Posted By: thapimpfromchi
Subject: Question about dual batteries
Date Posted: May 02, 2004 at 11:46 PM
Alrighty. I've never done anything of this kind before, so bear with me. I'm just trying to get some background info on this before I attempt it, or, if i even have to. So far, all I know is that when hooking up 2 batteries, you need an isolator. This prevents the audio from using the other batteries power. Right? Now, i know that the alternator powers both batteries. Does having a dual battery set up still lead to dimming lights? When the alt is charging, how does that work? Does each batter receive half the power such as, 60 amp alt, 30 to each batt? How exactly do you hook this up? I read once that you had to connect it while the car is running? Is that true? Thanks for any info.
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1990 Honda Civic HB:
Clarion DXZ545MP H.U.
2- 6.5" Power Acoustik interiors
Diamond Audio 600.1 amp
Diamond Audio 15" M6MKII
Pyramid PB881X 4 CH. Amp
Replies:
Posted By: Ketel22
Date Posted: May 03, 2004 at 12:44 AM
https://www.bcae1.com/chargin2.htm there is some info on the charging system which should tell u about the dimming head lights and such... ------------- Quad L Handyman services
Posted By: casedeez
Date Posted: May 03, 2004 at 3:09 AM
Thats a good site to knwo about. It explains things much in the way Dyohn and Forbidden did. Good choice Ketel. Mad props.
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