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.