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    Thread: Dual batteries

    1. #1
      Join Date
      Aug 2004
      Location
      SoCal
      Posts
      1,008

      Dual batteries

      I have a single optima red top battery now, and am wondering if there would be of any benefit to running two of these. I don't plan to have a super powerful stereo or anything, but just wanted extra juice if we went to a show somewhere and the kids wanted to keep the DVD player going while the car was off... Would they be wired in parallel?

      Thanks,



    2. #2
      Join Date
      Dec 2003
      Location
      lost
      Posts
      2,607
      If you wanted to run them together it would have to be done in a parallel circuit. I recommend running the second as a slave with an automatic isolator so the alternator will charge both but the engine runs off one and the electronics runs off the other.

    3. #3
      Join Date
      Aug 2004
      Location
      SoCal
      Posts
      1,008
      Ok, I found some - any recommendations as to brand or power rating?
      Thanks,

    4. #4
      Join Date
      Aug 2006
      Posts
      105
      Tom, what kind of isolator did you end up using?
      69 Camaro Rag Top
      "Will trade wife for parts"

    5. #5
      Join Date
      Aug 2004
      Posts
      210
      I considered the 2 battery approach based on the electric requirements (fuel pump, water pump, A/C, upgraded headlights, EFI computer, dual fans, windows, mirrors, possibly a stereo, etc). Its not really necessary anymore. There are single batteries that will get the job done. Here is what I went with ;

      http://www.odysseybatteries.com/battery/pc2150.htm


      With a Powermaster 200 amp alternator, I think Ill be good to go.




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