4WD DUAL BATTERY SETUP

Power for Out There. Confidence for the Return Trip
At 4x4 And Outdoor, we install dual battery systems for 4WDs across Brisbane and the Gold Coast. Whether you’re running a camp fridge, charging tools, powering camp lights, or just keeping the beers cold — we’ll make sure your battery set up works, and keeps working.
From under-bonnet Deep Cycle battery setups to Lithium systems mounted in your tray or canopy, every install is tailored to match your specific vehicle make and model, your accessories, and the way you use them. You’ll get a solution that works — without paying for more than you need.
What Is a Dual Battery Setup — and Why Do You Need One?
A dual battery system gives your 4WD a second power source — completely independent from your starter battery — so you can run accessories like fridges, lighting, inverters, and phone chargers without the risk of being stranded with a flat start battery.
Most setups include an auxiliary battery (Wet, AGM or Lithium), a smart charging system, fuses, isolators, outlets for 12V or USB devices, and optional solar panel inputs — fixed or portable. We’ll help you decide how much capacity you need and where your battery should be mounted — whether that’s under the bonnet, in a battery box, or hard-mounted in your canopy.
We can also integrate your dual battery system with solar panels, inverters, and smart battery management systems. If you need it connected to a trailer or caravan, we’ll ensure it’s fully integrated — cleanly, safely, and to spec — so your entire electrical system works as one.
What Size and Type of Battery System Do I Need?
The right battery system depends on what you plan to power, how long you’ll be off-grid, and whether your vehicle is moving daily or parked up at camp.
Weekend campers running a fridge might only need a basic 100Ah AGM system with a portable solar panel for topping up. Touring families using fans, lights, and chargers may require a 200–300Ah lithium system with a fixed solar array and smart BMS. Tradies running tools or high-draw gear might need multiple batteries and inverter integration.
During your consultation, we’ll ask:
What accessories you plan to run (fridge, lights, laptops, cooktops, etc.)
How long you expect to be off-grid between charges
Whether you need portable or fixed solar panels
If the system needs to be removable, hard-wired, or expandable later
We’ll calculate your amp draw, size the system correctly, and recommend the type of battery — factoring in space, cooling, portability, and budget. We can even help power high-draw gear like coffee machines or induction cooktops — safely and reliably.
Brisbane and the Gold Coast
Custom Setups for Touring, Work, or Weekends Away
We work with all the major brands, including Enerdrive, Redarc, Projecta, Invicta, Dometic, TJM, Hardkorr, Cangoee, and EcoFlow — giving you flexibility in design, function, and price.
Based on how you use your vehicle, we’ll design and install a system that’s tailored to your setup — whether you're:
A tradie running tools and task lighting
A tourer needing solar input and reliable fridge power
A family powering fridges, fans, lights, and devices on long off-grid stays
A weekend camper using a portable unit or plug-and-play lithium box
A van owner needing power delivered via 12-pin or Anderson plug systems
Why Choose 4x4 And Outdoor?
As locals with workshops across Brisbane and the Gold Coast, we understand what 4WD owners in Queensland really need.
Custom setups, not cookie-cutter installs
Lithium & AGM options, sized properly for your needs
Solar-ready systems for long off-grid stays
Off-the-shelf and custom fabrication battery trays, boxes, and brackets
Battery management systems and diagnostics included
Clean, tidy, reliable installs using quality parts
12-month installation warranty plus all manufacturer coverage
From under-bonnet basics to full touring power systems — we build it right the first time.
Dual Battery Installation – How It Works
Step 1: Talk to Us
Visit us at one of our Brisbane or Gold Coast locations or enquire online. Tell us what you plan to power and for how long. We’ll walk you through the best options.
Step 2: Plan & Quote
We’ll help calculate amp draw, recommend a system size, and prepare a tailored quote. We’ll also help you futureproof for later upgrades.
Step 3: Install & Test
Our team will install your system cleanly and securely. We follow ADR-compliant wiring standards, fit the correct fuses and isolators, and test every connection and circuit. Depending on the complexity of your battery system, this could take a day or upwards of a week to complete.
Step 4: Walkthrough & Support
Before you hit the wide open road, we’ll show you how to monitor, maintain, and get the most from your system. You’ll know exactly how it works and what it can handle.

Start Your 4WD Dual Battery Setup Today
Power your adventures — safely and reliably — with a dual battery system from 4x4 And Outdoor.
Call us or send an enquiry today, and we’ll help you build the perfect setup for your vehicle, your trips, and your lifestyle.
Contact our team
Have a question around a product or need a fit out? Speak to our local experts. Enter your details using the form and our team will aim to get back to you within the next business day.
You can also contact us using the details below.
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