MDC XT MK4 RANGE

Go Off-Grid.
Keep The Comfort.

A range engineered around 48V from the ground up. More energy on board, faster to put back, and the comfort you actually came for.

BUILT FOR THE WAY YOU ACTUALLY WANT TO TRAVEL.

You go away to get away, and that doesn’t mean giving up air conditioning, induction cooking, a proper coffee or the everyday comforts that make travelling enjoyable.

XT MK4 was engineered around a Projecta 48V electrical system, with substantial battery energy, solar, high-capacity charging, direct 48V air conditioning and a 4000W inverter.

Keep Your Cool.
Even Off-Grid.

Because getting away should not automatically mean giving up comfort.

Tired of rationing the aircon? Every XT MK4 is fitted with a 48V Dometic FreshJet air conditioner that operates directly from the 48V battery system. That means you can use battery power for cooling without running the air conditioner through the inverter.

Less Juggling.
More Living.

Less thinking about power. More enjoying what it’s there for.

Because the air conditioner runs directly from the 48V system, it doesn’t draw on the 4000W inverter’s output capacity. That leaves the inverter free for your 240V appliances, within the normal limits of the system.

STAY OUT LONGER.
10.8kWh ON BOARD

Because 48V is just the beginning of the story.

Every XT MK4 carries 10.8kWh of nominal battery energy as standard across the range, equivalent to 840Ah battery in a traditional 12V system. That’s the reserve behind real independence and real autonomy, and the reason you can stay out longer. Because when comparing caravan power systems, voltage alone doesn’t tell you how much energy you actually have available.

48V

Why It works

Four more reasons it holds up

The comfort is the reason you’ll want one. This is the engineering that makes it possible, and the detail worth asking every manufacturer about.

LET THE SUN DO SOME OF THE WORK.

Because an overcast day shouldn’t change your plans.

Depending on model, every XT MK4 carries between 700W and 1400W of rooftop solar. When suitable sunlight is available, that solar can contribute while you’re camped and while you’re travelling. Three compatible portable-solar inputs also give you extra flexibility when campsite conditions call for it.

WHEN YOU PLUG IN, MAKE IT COUNT.

Because a powered site can be a stop, not a stay.

Every XT MK4 can mains-charge at up to 70A at 48V. A substantial battery bank needs substantial charging capability, so when mains power is available, the system is designed to make good use of it.

BUILT AS A SYSTEM. NOT A SHOPPING LIST.

A true 48V system, engineered from the ground up.

Battery. Solar. Charging. Inverter. Air conditioning. 12V management. Control. Every XT MK4 was engineered so these work together as one complete architecture. The real story isn’t any one number; it’s how the whole system works together. That’s why the air conditioner has its own dedicated 48V line, separate from the inverter. When you’re comparing, that’s a question worth asking.

BUILT IN. NOT ADDED ON.

Compare what you actually drive away with.

The core 48V architecture is standard across the XT MK4 range, including:

10.8kWh nominal battery energy, equivalent to 840Ah at 12V
4000W Projecta inverter
48V Dometic air conditioning
Projecta Intelli-Grid power management
10-inch Projecta colour touchscreen
700W to 1400W rooftop solar, depending on model

48V

The Numbers behind it

What's Actually on Board

Every XT MK4 shares the same core 48V architecture. Read these together, because it’s the combination that does the work, not any single figure.

System Element	XT MK4
BATTERY SYSTEM	Projecta 48V 210Ah lithium battery bank
STORED ENERGY	10.8kWh nominal, roughly 840Ah equivalent at 12V class
INVERTER	4000W Projecta inverter
MAINS CHARGING	Up to 70A at 48V, broadly the charging power of 280A at 12V
SOLAR CHARGING	Up to 30A at 48V, broadly the charging power of 120A at 12V
ROOFTOP SOLAR	700W to 1400W depending on model
EXPANDABLE SOLAR	Three compatible portable-solar inputs
12V MANAGEMENT	Projecta IGCMD18 18-channel 12V master output module
INTERFACE	10-inch Projecta colour touchscreen with smart-device connectivity

48V

Thinking 48V? Know what matters

MDC's Ultimate Guide to 48V Caravan Power

A plain-English guide to:

what 48V actually means
batteries, solar and inverters
how power, energy and charging fit together
what to look for when comparing 48V caravans

READY TO TAKE COMFORT OFF-GRID?

LET'S TALK ABOUT YOUR NEXT CARAVAN

Explore the XT MK4 range and see how MDC has built 48V into the whole caravan. Tell us how you travel and we’ll walk you through what the system means day to day, and which model suits the way you camp.

Or Call us Now on 1300 494 494

48V

MK4 Video Gallery

48V

Frequently Asked Questions

Common Questions

How do I tell a real 48V system from a 48V badge?

It's a fair question, and one you can't answer from a spec sheet.

Here's what most people don't realise: if a caravan has a 48V battery, the solar controller and the inverter have to be 48V too. They come as a set. So knowing a caravan runs 48V doesn't yet tell you what that 48V is doing.

When comparing what's worth asking instead is which appliance runs on 48V. Simple question, simple answer.

In an XT MK4 it's the air conditioner, on its own dedicated 48V line straight from the battery. It was designed that way so cooling doesn't have to draw on the inverter's capacity, which is what makes overnight comfort off-grid realistic rather than something you ration.

Is a 48V caravan safe?

A properly designed 48V caravan electrical system incorporates multiple layers of protection and control. Depending on the architecture, these can include battery management, fuses and circuit protection, isolation, temperature monitoring, fault monitoring and appropriately rated electrical components.

The important point is that electrical safety does not come from a voltage number alone. Good safety comes from engineering, protection, correct installation and appropriate servicing. A caravan electrical system should never be treated as a DIY electrical project.

Does everything in the caravan run at 48V?

No. A 48V caravan can contain 48V equipment, 12V equipment and 240V equipment at the same time. Different voltages can be used where they make the most sense.

Does a 48V caravan require a 48V tow vehicle?

No. The 48V description refers to the caravan house electrical architecture, not the tow vehicle. How charging is handled while travelling depends on the overall vehicle and caravan setup. Remember that rooftop solar can continue contributing while you are towing whenever sunlight and system conditions allow.

Is a 48V system harder to use?

It should not be. A sophisticated electrical architecture can still have a simple user interface. The owner should not need to think about voltage conversion every time a light is switched on or an appliance is used.

In XT MK4, the Projecta Intelli-Grid system brings power-system monitoring and supported onboard controls together through a 10-inch colour touchscreen with smart-device connectivity.

Is a 48V system difficult to service?

Serviceability depends on how the system has been designed, how faults are identified, how modular the major components are and how the manufacturer supports them. Electrical diagnosis and repair is not an owner DIY task. Servicing should follow MDC and component-manufacturer requirements.

Can I use my existing portable solar panels?

Do not assume so. Portable solar compatibility is not determined by wattage alone. For XT MK4, current requirements call for unregulated portable solar at 39.5V to 43V Vmp, with a maximum of 10A per input and 30A combined across all three inputs.

Standard 12V portable solar, regulated portable solar, incompatible-voltage panels, DC chargers and batteries are not to be connected to these inputs. The compatibility plate beside the inputs is the final reference.

6 Things to Remember

1. 48V is an architecture, not a battery-size claim

A 48V caravan is not simply a caravan with a different battery sticker. Battery, charging, power conversion, loads, protection, monitoring and control all need to work together.

2. For the same power, higher voltage requires less current

That is the fundamental electrical reason 48V becomes particularly relevant as power demand increases.

3. Amp-hours don't tell the whole battery story

When comparing systems at different voltages, kWh gives a clearer measure of stored energy. XT MK4 is 210Ah at 48V class, approximately 10.8kWh nominal, or broadly 840Ah equivalent at 12V class.

4. Remember the bucket and the tap

Battery energy is the bucket. Charging capability is the tap. A serious off-grid power system needs both.

5. Judge the whole system and check what is standard

Do not stop at battery Ah, solar watts or inverter size. Ask how the architecture works together and which parts of the advertised capability are actually included in the standard delivered caravan.

6. Ask the right questions

You do not need to become an electrical engineer to choose a caravan intelligently. You simply need to know which questions to ask.

Go Off-Grid. Keep The Comfort.