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dual batteries in late model hemi ram?Anyone done it yet.

Discussion in 'Ram Trucks' started by stangman35, Jan 24, 2009.

  1. stangman35

    stangman35 Senior Member
    Messages: 267

    Getting ready to do it to my 08 ram 1500 with the hemi.

    would like to get pics of others that have done this.Im going to try and start on mine tomorrow and will take pics of the install.
     
  2. weeman97

    weeman97 Senior Member
    Messages: 376

    take pics....would love to due it to my 04 2500 hemi!!!
     
  3. wildbl1500

    wildbl1500 Senior Member
    Messages: 111

    yes, keep us posted on your project.
     
  4. basher

    basher PlowSite Fanatic
    from 19707
    Messages: 8,993

    I'm mounting a second battery soon. I'm going to try to mount it under the bed near the cab. Un-usual I know, but I hate a crowded engine bay.
     
  5. stangman35

    stangman35 Senior Member
    Messages: 267

    Im putting the battery in the stock location on the passenger side,just like the diesels.
    I picked up the battery tray at the dealer yesterday,prolly gonna be tomorrow before I can get started now,unless I can find some 2 guage or larger wire today.Im gonna have to either move the airbox or make something.Got some ideas but need to get the new tray in there and see what Iv got to work with.
     
  6. wildbl1500

    wildbl1500 Senior Member
    Messages: 111

    Great plan. I would rather use the tray from a diesel and keep it up front, than put it up under the bed. I have 0 fabrication skills...
     
  7. Lifted4x4Astro

    Lifted4x4Astro Senior Member
    Messages: 130

    I am planning on doing it this summer on my 03. I will also be using a stock diesel tray but will be fabbing my own cold air intake to make sure I have room for the battery. I will also be making my own cables and will be upgrading the stock alt - bat cable as well as grounds as needed. Post up pics as you go so we can see! :D
     
  8. stangman35

    stangman35 Senior Member
    Messages: 267

    Im pretty much done,I took pics.I'll post everything up in the next few days.Were supposed to get some snow the next 3 days so we will see if it helps with the voltage drop.
     
  9. stangman35

    stangman35 Senior Member
    Messages: 267

    here is a pic of what iv done so far,I'll probably do something different with the intake later when I have more time.

    dual batteries 013.jpg
     
  10. CarCrazed4Life

    CarCrazed4Life Senior Member
    Messages: 171

    Back when I use to be in the car audio industry, we had an simple answer:

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

    Those batteries had reserves twice the entry Optima Red Top Battery which was considered an upgrade from most batteries. Usually if that didn't solve it, then we worried about getting another one of them installed. I got mine on order, but I did the math and it should be the equivalent of 2 OEM batteries capacity wise and discharge wise :)
     
  11. wildbl1500

    wildbl1500 Senior Member
    Messages: 111

    Nice work Stangman. Do you have a mopar part number (or numbers) for the tray assembly?
     
  12. stangman35

    stangman35 Senior Member
    Messages: 267

    Just ask for a 06 to 08 battery tray for a diesel,the holddown for the battery and the bolt for the hold down arnt included so you need to get them also.
     
  13. wildbl1500

    wildbl1500 Senior Member
    Messages: 111

    Stangman, did you setup the new battery in parallel with the original? How about the ground? Sorry for so many questions. I'll be doing the same project when the weather gets warmer...

    The BIG Question: Has the new setup helped with the voltage drop?
     
  14. stangman35

    stangman35 Senior Member
    Messages: 267

    Yes positive to positive 2 guage cable. grounded it to the block just like the stock battery.

    It has helped but a bigger altenator would make it great.

    dual batteries 001.jpg

    dual batteries 004.jpg

    dual batteries 005.jpg
     
    Last edited: Jan 29, 2009
  15. stangman35

    stangman35 Senior Member
    Messages: 267

    Im gonna upgrade the battery clamps and cables on the stock battery when I get a chance.
    Im also going to run a ground to the body and maybe the frame also to make sure everything gets a good ground.

    I ran the positive cable along the firewall,you can see the zip ties on the wire loom in the pic.wanted to keep everything neat.

    dual batteries 015.jpg
     
  16. wildbl1500

    wildbl1500 Senior Member
    Messages: 111

    Thanks for the pics and answers to my never-ending questions.
     
  17. stangman35

    stangman35 Senior Member
    Messages: 267

    No problem,the hardest part is getting that piece that holds the filter box out there are 2 bolts that you can see at the top and there are two that you cant see and can barely get to,youll need small hands and a 13 mm gearwrench.An then there are to screws in the fenderwell 5/16 socket will get them.the good thing is the hard ones dont get put back in the same place. you use them to bolt the bracket down on the top of the bracket,see the pic 4 bolts holding the battery box.

    It was really easy to do for the most part.
     
    Last edited: Jan 29, 2009