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an extra battery

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Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
Printed Date: December 05, 2022 at 8:11 AM

Topic: an extra battery

Posted By: thumpn87ford
Subject: an extra battery
Date Posted: March 16, 2006 at 6:51 PM

i have two(2) 15" cadance subs powered by a 2500 watt cadance amp i have all the equipment i need for another battery i juat want to check to make sure i'm not going to blow anything when i turn it all on.  any help would be wonderful

if it's big it's ok, if it's shinny it's better. if it's loud, it kicks. the louder the better


Posted By: menace2sobriety
Date Posted: March 16, 2006 at 11:22 PM
another batt will not blow anything up just make your alternator work a lil harder. run the batt's positive to positive, neg to neg. and thats all their is to it. just remember to fuse the new batt too.


Posted By: Alien509
Date Posted: March 17, 2006 at 11:22 PM
wouldn't that be a paralell setup and make the voltage 24 volts instead of 12, therefore frying everything?

Posted By: jeffchilcott
Date Posted: March 17, 2006 at 11:49 PM
no, the voltage would remain the same.

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Posted By: willdkartunes
Date Posted: March 18, 2006 at 12:04 AM

Make sure your alternator is capable of charging another battery. If your drawing a lot of current (2500watts is a good bit) then your alternator must be able to keep up with this current draw. I've seen a lot of people fry their old alternators because they wanted to try and save some money. Then again, I've also seen a lot of people stick with their stock alternators and haven't had a problem with it. It all Depends on your factory alternator's capabilities.

Keep in mind that a battery cannot "overpower" a stereo system. A battery is only a storage for energy. Whether or not you use this stored energy to kill your stereo is another question all together...

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Posted By: xscash
Date Posted: March 18, 2006 at 12:10 PM

hey would only be 24v if you connect the positive from one to the neg of the other...then you would get 24v on the other 2 terminals.


Posted By: 12tech
Date Posted: March 18, 2006 at 12:48 PM
if u are using a factory alternater then consider uppgrading it also.


Posted By: Alien509
Date Posted: March 18, 2006 at 6:39 PM

My bad I read the topic late at night and was a bit tired, but I'm not going to call you a menace for being right this time.posted_image

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