Mon–Fri 8am–5pmShop 1/18 Pacific Ave, Miami QLD 4220
Campers at night under a 4WD awning lit by 12V camp lights

Dual Battery and 12V Gold Coast

Run the fridge, lights and charging for days without touching your start battery.

Modern 4WDs with smart alternators need a DC-DC charger to properly charge an auxiliary battery. We design dual battery systems around what you run, how long you stay put and whether you want solar input, then install them with proper cable sizing and fusing.

We fit lithium and AGM deep cycle batteries, fridge outlets in the tub or canopy, USB and Anderson points, solar regulators and inverters.

What we fit

  • DC-DC chargers. Correct charging from smart alternators and solar.
  • Lithium and AGM batteries. Deep cycle batteries sized to your load.
  • Solar and inverters. Portable and fixed panels, regulators and inverters.
  • Fridges and outlets. Fridges, slides and power points where you need them.

Brands

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Why fit with us in Miami

  • System sized from your actual power use
  • Cable sizing and fusing to standard
  • Clean routing through the firewall and chassis
  • Battery monitor so you know what's left

Questions

Do I need a DC-DC charger?

If your vehicle has a smart or variable voltage alternator, yes. A simple isolator won't fully charge the second battery.

Lithium or AGM?

Lithium is lighter and gives more usable capacity. AGM costs less up front. We'll recommend one based on your use.

Ready to build yours?

Free quotes, honest advice and expert fitment in Miami.

Get a free quote(07) 5572 1711
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