Dual Battery Setup in the Illawarra
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Custom Dual Battery Installations
Bonetig’s Towbars & Trailers, based in Oak Flats and servicing the Illawarra, provides expertly installed dual battery setups to keep your gear powered wherever you go.
Whether you’re heading off-road, camping in remote areas, or travelling long distances with a caravan or 4WD, having a separate auxiliary battery means you can run fridges, lights, and accessories without draining your main starter battery.
We custom-build systems that suit your vehicle and lifestyle, ensuring you have a safe, reliable power source on every trip. Call 0418 478 155 to get your dual battery system professionally installed today.
Reliable Power for Off-Grid Travel
Dual battery systems are the backbone of any off-grid or extended road trip setup. With two separate batteries—one for starting your vehicle and one for powering accessories—you can enjoy comfort and convenience without worrying about being stranded with a flat battery.
Our team designs and installs complete systems using quality gear, proper isolators, DC-DC chargers, and all necessary components to suit your needs.
We ensure everything is wired, mounted, and operating as it should—so you're always ready for the road ahead.
Frequently Asked Questions
What is a dual battery setup and why do I need one?
A dual battery setup uses two separate batteries in a vehicle—one to start the engine and another to power accessories like fridges, lights, or pumps.
This setup is essential for camping, off-road trips, or long-haul towing because it protects your main battery from being drained.
With the right setup, you’ll always have power for essentials without compromising your ability to start the vehicle.
How do dual battery systems stay charged?
Dual battery systems are usually charged by your vehicle’s alternator, often in combination with a DC-DC charger.
The charger manages voltage levels to ensure both batteries receive the correct charge, even with smart alternators.
Many systems can also connect to solar panels for off-grid charging, giving you added flexibility when camping or travelling in remote areas.
Can I install a dual battery system in any vehicle?
Most 4WDs, utes, and SUVs can be fitted with a dual battery setup.
The size and complexity of the system depend on your vehicle’s layout, how much power you need, and what accessories you’re running. It’s important to choose the right battery type, mounting location, and wiring system to suit your needs. A professional installer ensures it’s done safely and effectively.
