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Dual Battery Systems - TWB

🔋 Dual Battery Systems – Townsville Wholesale Batteries

At Townsville Wholesale Batteries, we specialise in dual battery systems for every type of vehicle and lifestyle. From vehicle-specific lithium kits that fit perfectly in popular utes and 4WDs, to custom-built dual battery systems for caravans, camper trailers, and motorhomes, we have the right solution to keep you powered on and off the road.

Whether you’re a travelling weekender who just wants to keep a fridge running, or you need a full off-grid power system with 12V and 240V capability, we design and install dual battery systems tailored to your needs.

What is a Dual Battery System?

A dual battery system adds a dedicated auxiliary battery to your vehicle, completely separate from your starter battery. This lets you run fridges, lights, radios, inverters, and appliances without draining the battery you rely on to start your engine.

With smart management (isolators or DC-DC chargers), solar integration, and lithium battery technology, dual battery systems have become the ultimate power solution for touring, camping, work, and off-grid living.

Vehicle-Specific Dual Battery Kits

We stock and install vehicle-specific lithium dual battery systems designed to fit seamlessly into factory spaces. These kits are precision-engineered for popular makes and models, including:

  • Toyota LandCruiser Dual Battery Systems – 79 Series (behind the seat), 200 Series, and 300 Series.

  • Toyota Hilux Dual Battery Systems – under-bonnet or behind-seat lithium options.

  • Ford Ranger & Raptor Dual Battery Kits – “no-drill” fitment with integrated lithium solutions.

  • Isuzu D-MAX & MU-X Dual Battery Systems – lithium setups designed for touring and towing.

  • Nissan Navara Dual Battery Systems – efficient auxiliary power solutions for campers and tradies.

  • Mitsubishi Triton Dual Battery Kits – compact lithium systems for canopies or under-tray installs.

  • Jeep Wrangler & Gladiator Dual Battery Systems – rugged lithium power for serious off-roaders.

  • Volkswagen Amarok Dual Battery Kits – slim lithium fitments for wagons and trays.

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Custom Dual Battery Solutions – Cars, Wagons, Utes & Canopies

Not every vehicle needs a pre-built kit. That’s why we also design and install custom dual battery systems to suit:

  • Under-bonnet battery setups for utes and 4WDs.

  • Behind-seat lithium systems in dual cab utes.

  • Wagon installs – integrated into the rear, built around drawer systems for touring.

  • Custom canopy installs – full 12V lithium systems designed into canopy fit-outs for tradies, campers, and tourers.

These systems are built using premium lithium batteries, DC-DC chargers, solar controllers, inverters, and monitoring systems from trusted brands, ensuring you get reliable power in any situation.

Caravans, Camper Trailers & Motorhomes

We don’t stop at vehicles. Our team also builds integrated dual battery and off-grid systems for caravans, campers, and motorhomes.

From compact weekender setups to full luxury off-grid builds, we can design systems to power everything you need:

  • 12V appliances (fridges, lights, pumps, fans).

  • High-draw accessories (winches, air compressors, induction cooktops).

  • Full 240V systems with inverters – power laptops, coffee machines, microwaves, TVs, or tools.

  • Air conditioning systems – yes, modern lithium setups can now handle caravan and motorhome AC for extended off-grid comfort.

Our integrated systems include solar panels, lithium battery banks, inverters, chargers, and monitoring apps, giving you complete confidence when travelling Australia.

From Weekenders to Full Off-Grid Comfort

  • Travelling Weekender – compact lithium system to run a fridge, lights, and phone charging for a weekend away.

  • Touring Adventurer – expanded dual battery system with solar input for extended stays in remote locations.

  • Work Vehicle – canopy systems powering tools, compressors, lights, and accessories.

  • Full Off-Grid Comfort – large lithium banks and inverters powering air conditioning, induction cooktops, and 240V appliances for caravans and motorhomes.

No matter your setup, we’ll design the right dual battery solution for your needs.

Why Choose Townsville Wholesale Batteries?

  • Trusted Brands – Custom Lithium, Offroad Living, AllSpark, Marshall, Trojan.

  • Expert Local Advice – our team camps, tours, and works in NQ, so our systems are tested in real conditions.

  • In-Stock Systems – many vehicle-specific kits and components ready for same-day service.

  • Professional Installation – mobile or in-store fitting available.

  • Warranty & Reliability – lithium batteries with up to 7-year warranties.

📞 Call us today on 0459 364 303
📧 sales@twbgroup.com.au

⚡ Townsville’s trusted experts for lithium dual battery systems – from vehicles to caravans, we power it all.