Motorhome and campervan power upgrades · Morayfield workshop · Ducato · Sprinter · Iveco · Bus conversions
Motorhomes · Campervans · Bus conversions

Escape the caravan parks.
Stay where there’s no power
and no other people.

No booking. No neighbours two metres away. No hunting for a powered site at four in the afternoon. A motorhome that carries its own power pulls up where the view is and simply stays there.

  • Stay a week, not a night. Battery sized to how long you want to disappear for, not to what the factory thought was enough.
  • Arrive with a full battery. On a Ducato, Sprinter or Iveco the alternator has to be set up properly, or a four hour drive puts almost nothing in.
  • Run what you actually want. Aircon, microwave, coffee machine. Built big enough and you live the same way you do at home.
  • Never stranded. The starting battery is kept apart from the house side, so nothing you run inside can leave you unable to drive out.
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20+
Years
7,000+
Vehicles
5.0★
Rating
730+
Google reviews
See it done

Struggling to stay off grid?

Fifty seconds inside a motorhome build at our Morayfield workshop: the battery, the 800 watts of solar, the charging and the monitoring that let you park at a spot like this one and stay put.

  • Lithium sized to how long you want to disappear
  • 800 watts of solar on the roof
  • Charging from the alternator and from 240V
  • Clear monitoring, so you always know where you stand
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The one most motorhomes get wrong

Your alternator probably isn't charging the house battery.

If your motorhome is built on a newer Ducato, Sprinter or Iveco, the chassis has a smart alternator. It varies its voltage to save fuel, and it drops that voltage the moment the starting battery is happy — which is usually within a few minutes of setting off.

What that means on the road

You drive four hours expecting the house battery to fill up, and it barely moves. The old-style relay that used to work fine on a 2008 chassis simply cannot do the job on a modern one, because there's no longer a steady 14 volts sitting there to pass through.

What it needs instead

A DC-DC charger that takes whatever the alternator is doing and turns it into a proper charge profile for your house battery. Sized to the battery, wired with cable heavy enough to carry it, and set up so it never touches your starting battery.

Protecting what starts the engine

In a caravan the starting battery lives in the tow vehicle, well away from the fridge and the lights. In a motorhome it's all one vehicle. Anything that runs the house side flat must be physically unable to touch the battery that starts you. That separation is designed in, not hoped for.

Older rigs and bus conversions

Pre-2010 chassis usually have a conventional alternator, which is simpler but often undersized for lithium. Bus conversions bring their own questions, including whether the system should be 24 volt. Both are straightforward once someone actually looks at what's there.

Where the power comes from

Three sources. All three have to work to stay out there.

A caravan can get away with weak charging, because there is always a powered site to fall back on. That fallback is exactly what you are trying to escape. Every one of these has to pull its weight.

Solar on the roof

Your only source while you're parked up. Motorhome roofs are crowded, so the design matters more than the panel count — we lay it out around the hatches, vents and aircon that are already there, and split it across regulators where shade makes that worth doing.

The alternator while you drive

This is the one that's usually broken or missing. Done properly it means a travel day is also a charging day, and you arrive at the next free camp with a full battery instead of a half-empty one.

240V when you have it

For the nights you do end up on a powered site, or at home in the driveway before a trip. A decent charger fills the battery overnight rather than trickling at it for two days.

Our own workshop, our own team

This is what it actually looks like.

Not stock photos. One real motorhome build at our Morayfield workshop, start to finish.

Ozzy Auto Electrics technicians fitting solar panels to a motorhome roof at the Morayfield workshop
1. Panels going on. Laid out around the hatches and vents already up there, and sealed to last on a corrugated road.
Ozzy Auto Electrics technician building a 12 volt board with Victron MPPT controllers and a Victron MultiPlus inverter
2. Built on the bench. The whole board wired, fused and labelled outside the van, where there is room to do it properly.
Finished 12 volt board installed in a motorhome with two Victron MPPT SmartSolar controllers and fused labelled circuits
3. Fitted and finished. Two Victron MPPT controllers so the roof runs as two strings, the inverter beside them, every circuit marked.
The Ozzy Auto Electrics team outside the Morayfield workshop
The team at Morayfield. The same people who quote your rig build it, and are still here when you ring in twelve months later from the other side of the country.
Why two identical quotes aren't

Anyone can fit the same gear.
It's how it goes in that decides how it runs.

Motorhomes are tighter than caravans. Cable runs are longer, the spaces are smaller, and there is far less room to fix a shortcut later. What happens between the components is what you're actually paying for.

We replace the cabling. Every time.

When we fit a product, the associated cable and connectors get replaced. Long runs from the engine bay to the house battery lose real power if the cable is undersized, and that loss is exactly what makes a system feel disappointing.

Electric hydraulic crimpers

Every high current joint made with proper hydraulic tooling, not hand crimps. In a motorhome those joints often sit behind a wall you can't easily open again, so they need to be right the first time.

Our own qualified auto electricians

Not subbied out. The team that quotes the job builds it and is still here when you ring twelve months later from somewhere in the middle of the country.

Fused, labelled and documented

Every circuit protected and marked. When you're a long way from home and something stops working, a labelled board is the difference between a ten minute fix and a ruined week.

Compare the pair

Same rig. Same panels.
Very different trip.

Two motorhomes, same solar on the roof, same battery underneath. One had the charging and cabling done properly when the system went in. The other kept what was already there, because that quote came in cheaper.

✓ Done properly

Arrives full, stays full

Three hours on the highway puts a serious charge in before she's even parked. The solar tops it off by mid afternoon. A week at a free camp is just a week at a free camp, and the generator stays in the locker.

✗ Left as it was

Hunting for a powered site by Wednesday

The drive puts almost nothing in because the smart alternator drops its voltage. The solar starts every morning from further behind. By the third day it's a choice between the generator or booking a van park.

After the job is done

Our workmanship warranty doesn't run out.

Most workmanship warranties run for a set period and then they're finished. Ours keeps going, as long as the rig comes back once a year for a maintenance check. Like servicing a vehicle, rather than waiting for it to break.

STEP 01

We build it

Fitted, tested and walked through with you before you drive out, so you know what every switch does and what the numbers on the panel mean.

STEP 02 · $199

Annual maintenance check

Bring it back once a year. We go over all our work, tighten every nut, bolt and terminal, check the solar panel mounting, load any new software updates and make sure the system is good for another twelve months.

STEP 03

Cover carries on

Do that and the workmanship warranty keeps running. The people who built your system have eyes on it every year, before you head off again.

Every nut, bolt and terminal tightened Solar mounting inspected Software updates loaded Full system test $199
Motorhome and campervan power

Questions we get every week

On most motorhomes built on a newer Ducato, Sprinter or Iveco chassis, the alternator is a smart alternator. It varies its output to save fuel and drops the voltage once the starting battery is charged, which happens within minutes of setting off. An old-style relay has nothing steady to pass through, so almost nothing reaches the house battery. A DC-DC charger fixes it by taking whatever the alternator gives and producing a proper charge profile.
There's no honest single answer, because it depends on the chassis, what's already fitted and how you travel. Adding a DC-DC charger to a rig that already has good solar is a very different job to a full rebuild. Send the form through and our team will price yours specifically, at no cost.
That's a core part of every motorhome build we do. The house side is separated so nothing you run inside can pull down the battery that starts the engine. In a caravan that separation is automatic because the batteries are in different vehicles. In a motorhome it has to be designed in.
Very common on motorhomes, between the hatches, vents and aircon. There's usually more usable space than it looks, and the answer is often smaller panels laid out cleverly rather than fewer big ones. Where the roof genuinely is full, the gap gets made up with better alternator charging and a bigger battery instead.
You can, with enough battery, enough solar and an inverter sized for the start-up load. It's the single biggest demand you can put on a motorhome system and it has to be designed in from the start rather than added later. Tell us on the form and we'll size it properly.
Yes. Bus conversions bring their own questions, including whether the system is better built as 24 volt, how the alternator is set up and what the existing wiring is actually capable of. It's all workable, it just needs someone to look at what's there before quoting rather than after.
A DC-DC charger or a solar addition is often a single day. A full off-grid build is normally a few days. You'll get a firm window with the quote so you can plan around it, and we don't start extra work without talking to you first.
We're Victron experts, and we also fit Redarc and Enerdrive. Batteries come from Custom Lithium, Provolt, Invicta and Lifetek, with warranties from 7 up to 10 years depending on the brand. Which suits you depends on the space you've got and how hard you're going to work it.
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