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Battery Box 4Runner

Discussion in '5th Gen 4Runners (2010-2024)' started by julpra, Jun 8, 2025.

  1. Jun 8, 2025 at 8:48 AM
    #1
    julpra

    julpra [OP] New Member

    Joined:
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    First Name:
    Julian
    Vehicle:
    4Runner SR5 2023
    Just wanted to share my almost finished project of battery box for my Engel Fridge and for Powering my Square Drop Camper. I wanted to make a battery box that could be removable, to be able to still use 1 of the 3rd row seat and keep the vehicle as stock as possible. This is my daily vehicle drive and I didn’t want to carry all week the load. I have learned from so many people posting youtube videos, forum threads that hopefully some one would find this content valuable.


    First step was connecting the 6 AWG wires from the battery to the rear driver side of the trunk. Starting from a fuse attached to the starter battery terminal, then to the kill switch, then through the firewall of the car through the kick panel and side panels of the vehicle to reach the trunk with a red Anderson connector.



    The battery box is made of wood and has 2x USB chargers, 2x cigarrette sockets (1 for powering Engel Fridge), 1x cooling fan connected to a 1x thermostat, 1x Renogy DCDC Charger, 2x 100ah Lithium Batteries connected in parallel, 1x voltmeter for monitoring charge, 2x busbars, fuses, fuseblock and a killswitch. It also has input for solar charger (future upgrade) and output for connecting my square drop camper to power the MAXX Air fan (+ other stuff that I might upgrade such as lights and water pump). I used some wires to attach the box to the vehicle as seen in the pictures.


    20250608_093653.jpg

    I am very happy with the build, learned a lot from all the internet sources and did it by my self. Hope that this is useful for someone that needs something removable and fully capable for delivering amps to their campers.

    Electric System.png
     
    Last edited: Jun 8, 2025
  2. Jun 8, 2025 at 11:07 AM
    #2
    Captain Spalding

    Captain Spalding . . .

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    Nice writeup. Welcome to the forum.
     
    julpra[OP] likes this.
  3. Jun 8, 2025 at 12:19 PM
    #3
    JET4

    JET4 Old Member

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    Southeast, Va.
    welcome
     
    julpra[OP] likes this.
  4. Jun 8, 2025 at 12:31 PM
    #4
    BS67

    BS67 8404 USMC Doc

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    Welcome
     
    julpra[OP] likes this.
  5. Jun 8, 2025 at 2:44 PM
    #5
    morfdq

    morfdq New Member

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    TRD Wheels, exhaust, Eibach, Cali Raised Skid Plate, Diode Dynamics fog, Sherpa Crestone rack.
    That’s slick. Nice job
     
    julpra[QUOTED][OP] likes this.
  6. Jun 11, 2025 at 3:02 PM
    #6
    kolter45

    kolter45 Inferno Pro & 4.0 Tacoma

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    Welcome from Denver :cheers:
     
    julpra[OP] likes this.
  7. Jun 11, 2025 at 5:54 PM
    #7
    3JOH22A

    3JOH22A トヨタ純正男娼

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  8. Jun 12, 2025 at 12:44 PM
    #8
    Ironguy

    Ironguy Kind of New

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    Bisbee AZ
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    New pine scent hanger, new sun shade
    Welcome from Arizona!
    Looks great.
     
    julpra[OP] likes this.

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