Optima Red for 2nd 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=46198
Printed Date: April 27, 2024 at 1:49 PM
Topic: Optima Red for 2nd Battery?
Posted By: sedate
Subject: Optima Red for 2nd Battery?
Date Posted: December 28, 2004 at 11:06 AM
I'm running a JL Audio e6450 (wired to 150x2 and 45x2) and a JL Audio e1800D (wired @ 2 ohms to 800x1). As it stands, with the e1800D going full tilt off a rebuilt 150-amp alt, a Optima Red Top & 1.2F cap the thing will occasionally clip out and the headlights dimm like crazy. . . so the last power upgrade left is a 2nd battery.
I've recieved the recommendation that I should wire my existing Red Top in Parallel with another one in the trunk instead of isolating a seperate deep cycle.
I idea being that the two red tops in parallel will yeild an extra volt over isolating another battery.
Since I'm running high voltage amps and my power supply is *almost* adequate, I ought go with more available power over reserve capacity?
Replies:
Posted By: KarTuneMan
Date Posted: December 28, 2004 at 11:19 AM
I posted earlier today on the use of an optima RED top for any amp power supply. The red top developes a "memory" and CANNOT be deep cycled at all. Kinetik (I think thats how ya spell it) makes power cells that are far superior to optima, for high need power consumption, i the car audio world! If your gonna use an optima for a second battery......use a yellow top -------------
Posted By: uthinkuknoaudio
Date Posted: December 28, 2004 at 11:25 AM
Use a yellow top. You need a deepcycle battery for that application, the red top will not be the one for you.
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"I don't play games. I play Nakamichi and that for real yo" - Probably some japanese kid said this in the early 80's trying to sell stereo out of his trunk lol.
Posted By: itchyfishnv
Date Posted: December 28, 2004 at 4:09 PM
I have 2 yellow tops in my plow trucks. youre headlights will not dim with 2 of them. My trucks headlights barely dim when lifting a 1000 lb blade off the ground. if you are going to wire 2 batteries in parallel they have to be of the same age or you will need to isolate them to prevent premature failure.
Posted By: sexyvic1
Date Posted: December 28, 2004 at 5:20 PM
go with the yellow top  -------------
Posted By: sedate
Date Posted: December 28, 2004 at 5:23 PM
Itchyfishy:
Hmm this occured to me as well... my understanding of batteries lends that one that is a year older than another one of the same model as well be different batteries entirely.
I do know that my Red top under my hood is in tip-top shape, I had it checked just before I put in the HO alt a few weeks ago, but the thing is still a year old.
What does it mean can't be "deep cycled?"
How do u isolate a 2nd battery anyway?
Posted By: sexyvic1
Date Posted: December 28, 2004 at 5:40 PM
in order to isolate a 2nd battery isolater. all u have to do is buy a battery isolater -------------
Posted By: sexyvic1
Date Posted: December 28, 2004 at 5:42 PM
in order to isolate a 2nd battery, all u have to do is buy a battery isolater
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Posted By: ~AFAccord~
Date Posted: December 29, 2004 at 2:33 AM
sexyvic1 wrote:
go with the yellow top
nuff said... ------------- Black Cherry
"Experience is something you never get until just after you need it."
Posted By: djMINIoompa
Date Posted: December 29, 2004 at 8:35 AM
what you mite want to try to do is replace the red top under the hood with a yellow top. The yellow top is a deep cycle battery ment for accesories, while the red top is merely specialized in cold cranking amps, aka starting power. If you try this, your battery mite not drop power as much. This mite save you the hassle of having 2 batteries, but if you have to have two batteries, u should just put two brand new yellow tops in there.
Posted By: 97Avalonxls
Date Posted: December 29, 2004 at 11:46 AM
or get a yellow top as your second battery and isolate them, use the red as only a starting batt and have the yellow run the system. Deep cycling is when you run the battery down to very low in it's power reserves. it will kill any battery that is not intended for said practice very quickly, the yellow top and other deep cycles can be run alomost try time and time again and keep coming back
Posted By: canuheminow
Date Posted: January 16, 2005 at 2:21 PM
should you ever use a blue top in your car or for you system?
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CanUHemi
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