Your Local 12 Volt Specialist
Coast Custom 12 Volt is a dedicated 12V electrical business. Your go to specialist who knows off-grid power systems inside out.
One Specialist. Zero Compromises.
Nathan has been working in electrics his whole career. Starting out in marine electrics on the Sunshine Coast, where systems have to perform in some of the harshest conditions going, he developed a genuine passion for building things that actually work.
That passion is what led him to start Coast Custom 12 Volt. He took everything he learned from years of marine work and brought it into the 12-volt world, because for Nathan, there’s nothing better than knowing the system he built is out there doing its job, whether that’s a weekend trip or a remote outback run.
He’s fully mobile across Warwick, Toowoomba, and the Southern Downs. He comes to you, assesses the job properly, and builds it right.
Our Story
The name “Coast Custom” comes from Nathan’s roots on the Sunshine Coast, where he spent years working on marine electrical systems. Boats demand a different standard everything has to be watertight, reliable and built for sustained off-grid use. That’s the mindset he brings to every 12V install.
Coast Custom has relocated to Warwick and the Darling Downs region, The region is home to serious grey nomads, working farmers and hardcore 4WD tourers who demand systems that perform in the real world. Exactly the kind of people Nathan built this business for.
Iveco Truck: Custom Off-Grid System, Victron Energy Products
Trusted Brands
We’re an authorised supplier and installer for the brands that serious off-gridders trust.
Victron Energy
Industry-leading inverters, solar controllers & battery management
Bushman 12V Fridges
Authorised supplier & installer — premium Australian 12V refrigeration
PowerPaul Australia
Australian-made lithium batteries — built for touring, not just storage
AS/NZS 3001.2:2022
Every installation is fully compliant
AS/NZS 3001.2:2022 is the Australian standard for caravan and RV electrical systems, the same standard professional caravan manufacturers build to. Every system we install is engineered and certified to this standard.
What Our Customers Say
Mobile service across Warwick · Toowoomba · Southern Downs · Darling Downs and surrounding regions
Ready to talk about your build?
Whether you’re planning a full off-grid fitout or just need a dual battery fitted, get in touch and we’ll work out exactly what you need.