Battery Voltage drop off

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=81989
Printed Date: May 09, 2025 at 11:22 AM

Topic: Battery Voltage drop off

Posted By: runvs07
Subject: Battery Voltage drop off
Date Posted: August 24, 2006 at 8:47 AM

When my subs hit hard my volt meter on the dash drops really low... like 9 volts.... Should i upgrade to an optima battery? if so which one? i have a cheap advance auto titanium battery right now

Replies:

Posted By: rudydapimp
Date Posted: August 24, 2006 at 10:38 AM

Well, a battery most likely won't help much. toom much current draw. Search on this forum for the BIG Three upgrade and if that doesn't help, I suggest getting a HO alternator

Posted By: jettagli03
Date Posted: August 24, 2006 at 11:16 AM

new alternator will help when you car is on and a new battery will help when it is off. but like he said, big 3 will also help.

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Posted By: Aruman
Date Posted: August 24, 2006 at 12:09 PM

9V is really low, you should upgrade to an HO Alt. a good Battery like Optima or Kinetik, and the big 3.

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