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Dual Battery Setups! Let's see them! Multiple Batteries Thread!

Discussion in 'Technical Chat' started by MJonaGS32, Sep 20, 2013.

  1. Dec 18, 2019 at 7:43 PM
    #2561
    000doodie000

    000doodie000 Well-Known Member

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    Many and always modding Wheels Suspension lift Armor Electrical gadgets etc...
    Yea, I may have to pull the battery back out again and just connect it behind the aluminum mounting bracket. I just really didn't want to take it out again, it was a major pita the first time to get it exactly how I wanted it. The ground wire supplied is pretty short.
     
  2. Dec 18, 2019 at 8:04 PM
    #2562
    rlj251

    rlj251 Active Member

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    Lower Mainland, BC, Canada
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    OME 3"w/888, Falken Wildpeak LT285-75/16, Crusin Offroad Rocksliders, Flex-it Fabrications Front bumper w/Smittybuilt X20 10k wired/wireless controller, Bakflip Tonneau. More to come.
    It can be a pain, but will make for a nicer install.
    I was lucky and able to get my tray in pretty easy, and I was able to route the negative across the back of the firewall and it just managed to connect them. But misunderstood the image for the orientation of the positive. So the covers are on the wrong ends. Going to have to fix that. But after the xmas holidays and my 2k mile trip.
     
  3. Dec 18, 2019 at 9:04 PM
    #2563
    Toynado

    Toynado Well-Known Member

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    EXTERIOR: Toytec Boss 2.0 Dakar CS047R Leaf Springs Tailpipe chopped Pelfreybilt Front full hoop front bumper w/ Pelfrey fairlead Pelfreybilt Rear standard bumper Pelfreybilt Aluminum IFS, Mid, Rear (exhaust reroute) & Gas tank skids Pelfreybilt Fuseplate w/ 12 circuit fuse block All-Pro Apex Sliders ProComp 7036 17"x9" -6 offset BFG 275/70R/17 KO2's Warn VR10000-S winch Baja Designs S8 light bar & Squadron sports amber pods in front bumper Baja Designs S2 flush pods in rear bumper Baja Designs Squadron Pro amber pods on Caliraised ditch light brackets @rrentrop reflective black tailgate inserts RSI LED's for regular & high beams Prinsu Cabrac Custom Tradesman Truck Top by Access Manufacturing w/ Powertank 8"propane tank mount & Yakima tracks on the roof INTERIOR: Warrior Products door sill protectors Husky Weather Beater floor mats front & rear Coverking arid multicam seat covers in the front Midland 75-822 CB w/ 4' Firestick antenna on C4 Fabrication tailgate mount Consolevault Hondo Garage iPhone mount
    I got a aux tray off another TW member so I’m piecing the rest together. Let me know where you guys end up making the ground and any other tips. Post more pics too
     
  4. Dec 18, 2019 at 9:05 PM
    #2564
    000doodie000

    000doodie000 Well-Known Member

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    Many and always modding Wheels Suspension lift Armor Electrical gadgets etc...

    I will post up some more pics on Friday once I have it completed. I am close but want to make sure I have it all set up properly first. :)
     
    Toynado likes this.
  5. Dec 20, 2019 at 7:28 PM
    #2565
    000doodie000

    000doodie000 Well-Known Member

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    Many and always modding Wheels Suspension lift Armor Electrical gadgets etc...
    Setup complete. The OGE kit is really pretty simple and the Redarc DC2DC charger is doing its job.
    Its a little dirty from my last road trip, but its good enough for some basic shots of the install.

    IMG_20191220_155236.jpg IMG_20191220_155230.jpg IMG_20191220_155219.jpg

    Basic Explanation for choosing DC 2 DC vs. smart battery isolator: youtube.com/watch?v=ITamN84IiAo

    Redarc Faults and codes video: youtube.com/watch?v=Ze4o5eJzmNI

    Redarc Manual: https://www.redarc.com.au/Content/Images/uploaded/Manuals/BCDC Instruction Manual.pdf

    I will be moving the connections from my sPod (currently connected to main battery) to the aux. I have not yet decided if I want to go through the hassle of moving the winch wiring to the aux battery, I currently have a solenoid and switch so there is no draw unless its on and the truck is running so I'm not too worried about any power draw.
     
  6. Jan 2, 2020 at 10:38 AM
    #2566
    Jaysonn

    Jaysonn Well-Known Member

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    Has anyone had any experience with the CTEK 140A Offroad?

    I am running a IBS dual battery setup and i am having issues with charging both my 35pc1400 odyssey batteries. I understand that we have smart alternators in the 3rd gen trucks and AGM batteries need a 14.7 volt charge for optimal performance and reliability.

    Judging from the info i could find on the 140A is that it will be the solution to my problems for charging the batteries properly and efficiently. The only issue i may have is finding a place to mount it all with my 2nd battery on the passengers side.

    Has anyone seen or used this product before and can give me some firsthand knowledge about it?

    Thanks
     
  7. Jan 3, 2020 at 6:38 AM
    #2567
    k8md

    k8md Well-Known Member

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    I have zero experience with it. It looks nice, but do you really need 140a?
     
  8. Jan 3, 2020 at 8:14 AM
    #2568
    buyobuyo

    buyobuyo Read The Fucking Manual

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    A thing or two...
    The 2nd gen tow package trucks have a 130 amp alternator; I don't know about the 3rd gens. It's better to oversize than undersize.
     
    rob1208 likes this.
  9. Jan 3, 2020 at 8:28 AM
    #2569
    torsf_tw

    torsf_tw Well-Known Member

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    Where do you have the solenoid for the winch wiring? I'm trying to decide where to mount my Blue Sea switch for my winch.
     
  10. Jan 5, 2020 at 3:52 PM
    #2570
    000doodie000

    000doodie000 Well-Known Member

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    Many and always modding Wheels Suspension lift Armor Electrical gadgets etc...
    I cut a small piece of sheet metal and mounted it in the two bolt holes on the driver side. I ran the wiring along the side and up to the winch and then ran a switch into the cab.

    I used the the Warn 62132 Power Interrupt Kit. I also picked up a Liteway 5 pin rocker switch so I can switch it off and on from inside the cab. The one that came in the kit was a bit ugly. I have since changed out the primary battery cable to the solenoid with one the correct length that is sleeved and looks much cleaner.

    Here is what it looked like underneath the sPod.
    upload_2020-1-5_16-41-6.jpg

    and the switch in the cab
    upload_2020-1-5_16-47-19.jpg
     
    torsf_tw likes this.
  11. Jan 5, 2020 at 8:51 PM
    #2571
    DavidS

    DavidS Well-Known Member

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    I’m putting a DIY LiFePO4 aux battery behind the rear passenger seating of my 2012 DCLB. I already have a stereo amp back there with a beefy positive cable running from the starter battery. I plan to put a Renogy 20a DCDC charger back there and have an idea that might save me from having to run more cable from the engine compartment. The Renogy has a positive and negative input from the starter battery and a positive and negative to the aux battery. Is it OK to simply run the negative from the input side of the charger to the chassis ground I already have set up in the rear? I don’t understand if if it’s actually necessary to run a dedicated ground all the way back to the starter. Grounds are one of those 12V concepts I’ve never quite grasped. Thanks in advance.

    I find it odd that some DCDC chargers I see have a single common ground and then a positive to the starter battery and a positive to the aux battery.
     
  12. Jan 6, 2020 at 2:08 AM
    #2572
    k8md

    k8md Well-Known Member

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    Yes, it's preferred to chassis ground as close as practical to any DC device. You definitely do not want to run a ground wire back up to the battery. This could actually cause problems.

    Did you run a ground wire for the amp back to the battery? I suppose you can make a case where that might be necessary for a high current device such as an amp. Although it raises a concern to me. I'd suggest making absolutely certain that the ground cable is also chassis grounded on both ends and I'd also check it periodically to ensure connections on both ends are near zero impedance. Corrosion causing increasing impedance could cause a problem down the road.
     
    Last edited: Jan 6, 2020
  13. Jan 6, 2020 at 6:26 AM
    #2573
    Sandman614

    Sandman614 Snarky TWSS elf, Travis #hotsavannahdotcom, LRGRNR

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    ARB Front Bumper, Projector Headlights w/Slimcubby 4300K HID's, Oznium LED's, LED taillights, DIY Washable Cabin Moose Filter, Sockmonkey SR5 Off Road, Aux Audio plug, OME 886x, OME Nitrochargers, Wheelers 3 Leaf Progressive AAL, ImMrYo Rear-View Mirror Lift Bracket, Dodge D-Rings
    That's a good spot for winch controls
     
  14. Jan 6, 2020 at 7:10 PM
    #2574
    tom84ford

    tom84ford Well-Known Member

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    Jesus! Did he really need 2 plumber's straps!?!? Seems like overkill.
     
  15. Jan 10, 2020 at 4:19 PM
    #2575
    Toynado

    Toynado Well-Known Member

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    EXTERIOR: Toytec Boss 2.0 Dakar CS047R Leaf Springs Tailpipe chopped Pelfreybilt Front full hoop front bumper w/ Pelfrey fairlead Pelfreybilt Rear standard bumper Pelfreybilt Aluminum IFS, Mid, Rear (exhaust reroute) & Gas tank skids Pelfreybilt Fuseplate w/ 12 circuit fuse block All-Pro Apex Sliders ProComp 7036 17"x9" -6 offset BFG 275/70R/17 KO2's Warn VR10000-S winch Baja Designs S8 light bar & Squadron sports amber pods in front bumper Baja Designs S2 flush pods in rear bumper Baja Designs Squadron Pro amber pods on Caliraised ditch light brackets @rrentrop reflective black tailgate inserts RSI LED's for regular & high beams Prinsu Cabrac Custom Tradesman Truck Top by Access Manufacturing w/ Powertank 8"propane tank mount & Yakima tracks on the roof INTERIOR: Warrior Products door sill protectors Husky Weather Beater floor mats front & rear Coverking arid multicam seat covers in the front Midland 75-822 CB w/ 4' Firestick antenna on C4 Fabrication tailgate mount Consolevault Hondo Garage iPhone mount
    Trying to figure out where to ground aux battery on a 3rd gen. Thinking of behind this clamp or where??082E8847-769B-4C94-AB6B-57F6C2F914B6.jpg 0AC1FF8E-D008-4E4C-B430-106BCF45CD83.jpg
     
  16. Jan 12, 2020 at 5:25 AM
    #2576
    Scott B.

    Scott B. Well-Known Member

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    Go to the frame.
     
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  17. Jan 12, 2020 at 11:07 AM
    #2577
    SR-71A

    SR-71A Define "Well-Known Member"

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    You run it back to the main battery which in turn is bonded to the chassis ground. A few pics of my setup. Its a little hard to see because I made some heavier cables to replace the facotry ones, but its the wire with the braided wire loom. In the wide angle shot you can both the pos and neg running back to the Aux battery.

    20190202_150047_HDR.jpg
    20190203_125311_HDR.jpg
     
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  18. Jan 12, 2020 at 4:15 PM
    #2578
    Toynado

    Toynado Well-Known Member

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    Am I correct that the neg is going from the battery to the bussbar to the chassis? Those 2AWG or 4 AWG?
     
  19. Jan 12, 2020 at 4:23 PM
    #2579
    SR-71A

    SR-71A Define "Well-Known Member"

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    Yup. I wanted everything to look nice and clean so I made those 2 cables to fit :D. So I could tie the neg bussbar directly into that.

    Edit: yes those are #4 AWG
     
    Toynado likes this.
  20. Jan 24, 2020 at 8:27 PM
    #2580
    Toynado

    Toynado Well-Known Member

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    Finally found the time to get my dual battery setup installed. I got the trays from Off-grid4x4 and picked up the REDARC on a business trip to Australia and then pieced the rest together off Amazon.

    Thanks to all those here who helped answer my questions!

    Here is the REDARC wired up and ready for the instal. As you can see I have a thing for expandable sleeving and split loom. I added an Anderson SB50 if I end up needing extra solar. I have two 50W panels going through a Victron MPPT that I now have wired to the aux. battery.
    DFC7D509-E93F-43BC-BC67-1695DB63632B.jpg

    Took a section of copper pipe and pounded it flat and put in a couple rivnuts to make a less cluttered chassis ground for the REDARC ground and the solar ground.
    82CC0483-DB5C-42EB-AA76-A3F7276B9307.jpg

    Installed and very happy I was able to fit the group 27M in the auxiliary location.
    1837AA31-388C-4219-8234-EAA176566998.jpg CB5A5B41-C262-46E1-9ACE-08FE1FF343AD.jpg
    0BEE56C0-6146-437A-8B93-7EAA8D87FE5C.jpg
     

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