Off-Grid 12V Specialists - Warwick, QLD
Off-Grid Power Systems Built for the Australian Outback
Coast Custom 12 Volt designs and installs complete off-grid power systems for 4WDs, caravans, campervans and work vehicles across Warwick, Southern Downs and greater Queensland. AS/NZS 3001.2:2022 certified.
AS/NZS 3001.2:2022
Fully certified recreational vehicle electrical installations
Warwick, QLD
Locally based - serving the Southern Downs region
Victron Accredited
Authorised installer of Victron Energy off-grid systems
5-Star Rated
Trusted by 4WD and caravan owners across QLD
Complete Off-Grid Power for 4WDs, Caravans and Campervans in Southern QLD
An off-grid power system lets you camp, travel and work anywhere in Australia without relying on mains power. At Coast Custom 12 Volt in Warwick, we design each system to match your exact power requirements, vehicle type, and travel habits.
- Custom power budgets sized for your real usage
- Lithium LiFePO4 and AGM battery options
- Solar, DC-DC and shore power charging
- Inverters for 240V appliances on the road
- Full wiring, fusing and compliance certification
- Warwick, Toowoomba and Southern Downs installs
Quick Power Sizing Guide
| Setup | Battery | Solar |
|---|---|---|
| Weekend 4WD | 100-150Ah | 120-200W |
| Touring Caravan | 200-300Ah | 300-400W |
| Full-Time Motorhome | 400Ah+ | 600W+ |
| Work Vehicle | 200-400Ah | 200-400W |
Off-Grid System Components - Warwick Electrical Installations
Premium components for Australian conditions.
Lithium and AGM Batteries
LiFePO4 lithium for maximum cycles and weight savings, or AGM for value builds.
Solar Panels and Regulators
Rigid, flexible and folding panels with MPPT or PWM regulators for Queensland sun.
DC-DC Chargers
Redarc, Victron and Projecta DC-DC chargers for smart multi-stage charging.
Inverters and Inverter-Chargers
Run 240V appliances from your battery bank. Pure sine wave for sensitive electronics.
Battery Management Systems
BMS protection for lithium - over-voltage, under-voltage, over-temp and short circuit.
Wiring, Fusing and Compliance
All cabling sized to AS/NZS 3001.2:2022 with certified completion certificates.
Off-Grid Power for Every Vehicle - Southern Downs QLD
4WD enthusiast, grey nomad or remote work fleet – we have the experience to get you powered up.
4WD Tourers and Utes
Dual battery systems, DCDC chargers, ARB fridge wiring, Anderson sockets and rooftop solar. Built for the Cape York run.
Caravans and Motorhomes
Large lithium banks, 240V inverter-chargers, rooftop solar and shore power. Run independently for weeks.
Work Vehicles and Fleets
Emergency services, tradesmen and farmers. Commercial off-grid builds for all-day reliability.
Why Southern Downs Chooses Coast Custom 12 Volt
Warwick-based, trusted reputation. Here is what keeps customers coming back.
Nathan Does the Work
Nathan himself does every install - not a subcontractor.
Locally Based in Warwick
Your neighbours. We understand Queensland conditions and remote area challenges.
Certified and Compliant
Every job completed to AS/NZS 3001.2:2022 with a written compliance certificate.
After-Sales Support
Questions about your system later? Call Nathan - he will answer.
AS/NZS 3001.2:2022 Certified Off-Grid Installations
The Australian Standard AS/NZS 3001.2:2022 governs all electrical installations in caravans, motorhomes and campervans. Since July 2023, compliance is mandatory. Every installation we complete in Warwick and the Southern Downs is certified to this standard.
- Mandatory since July 2023 for all RV electrical work
- Written compliance certificate on completion
- Required for caravan and motorhome insurance
- Covers all 12V, 240V and solar circuits
- Protects you, your family and your investment
AS/NZS 3001.2:2022
Certified Installer
Recreational Vehicle Electrical Installations
Every installation includes a written Electrical Safety Certificate.
Our Off-Grid Installation Process - Warwick QLD
Four steps from enquiry to the road. No surprises.
Free Consultation
Tell us your vehicle, travel style and power needs. Honest advice, no upselling.
Custom Design
Full power budget and component list. Battery size, solar input - all calculated.
Professional Installation
Nathan installs at our Warwick workshop. Wiring routed, labelled and secured.
Certified Ready
Full system test and AS/NZS 3001.2:2022 certificate. Hit the road with confidence.
Serving Warwick, Toowoomba and The Southern Downs
Coast Custom 12 Volt is based in Warwick QLD – the heart of the Southern Downs. We service customers from across the Darling Downs and beyond.
- Warwick QLD 4370 - our home base
- Toowoomba and Darling Downs
- Stanthorpe and Granite Belt
- Goondiwindi and surrounds
- Kingaroy and South Burnett
- Ipswich and South East QLD
- Regional QLD - call for travel availability
Contact Coast Custom 12 Volt
PHONE
0421 214 111LOCATION
Warwick, QLD 4370
Call for a Free QuoteReady to Go Off-Grid?
Get Your Free Off-Grid System Quote - Warwick QLD
Call Nathan today for honest advice and a clear quote. Based in Warwick, serving all of Southern Downs and beyond.