AllSpark High & Low Voltage 400W Quad Fold Solar Panel: Built Tough for Aussie Off-Grid Adventures

When you’re travelling off-grid in Australia, reliable power is everything. That’s why we’ve launched our brand-new 2025 model 400W folding solar panel - the toughest, most powerful portable panel on the market. Whether you’re charging your 4WD, caravan, or camper trailer, this system is designed to deliver flexible charging options and serious output to keep you powered for days.

KEY TAKEAWAYS

  • High or Low Voltage Models: Choose a model to suit your systems requirements.
  • Charge two separate battery banks at once: Use the 200W + 200W split design to power both your 4WD and caravan at the same time.
  • Durable, rigid design: Built to last with a 5 Year Warranty.

Built Tough for Offroad Conditions

This panel is made with Japanese ETFE laminate and a lightweight aluminium frame - no fragile, heavy glass to worry about. It’s rigid, durable, and comes in a padded carry bag with robust aluminium clips. With four folding sections, this high powered panel is suprisingly compact. 

Smart Wiring for Maximum Flexibility

Both the high and low voltage 400W folding panels are designed as two separate 200W halves, each with its own Anderson plug. This gives you several setup options:

  • Split charging: Run one half into your 4WD and the other into your caravan or camper trailer.
  • Combined output: Use the supplied 2-into-1 adapter to join both halves for a single 400W feed.
  • Parallel connection: Suitable for most DC-DC chargers with input limits up to 32V for the low voltage model, or 45V for the high voltage model.
  • Series connection: With the optional series adapter, ideal if you’re running higher-voltage controllers like Victron or EP Ever Tracer.

High-Voltage Model Option

For serious power users, or those with 24V or 48V systems, we recommend the high-voltage version of the 400W folding panel. Instead of being pre-wired in parallel, this model is wired in series, giving a total output of around 43V per half, or 86V combined (in series) into a high-voltage MPPT controller. It’s designed for systems running high voltage input solar controllers, such as Victron or EP Ever Tracer models, which can accept up to 100V PV input.

The high-voltage model is particularly useful if you regularly need to set up your panel 5 to 15 metres away from your vehicle. Running at higher voltage means you can use longer extension cables without worrying about voltage drop - something that would otherwise require significantly thicker (and heavier) cabling to overcome. This gives you much more flexibility when positioning your panel in the sun while keeping your vehicle or caravan in the shade.

It’s important to note, however, that shading has a more significant effect on high-voltage panels. Even partial shade across one section can reduce output more than it would on the low-voltage version. For best results, make sure your high-voltage panel is set up in full sunlight.

Low-Voltage Model Option

The low-voltage version of the 400W folding panel is the ideal choice for the vast majority of setups, as most DC-DC chargers with built-in MPPT only accept solar inputs in the range of 28–32V. In this case, the high-voltage model cannot be used, making the low-voltage panel the correct and most compatible option.

This model's halves are wired in parallel, which provides an added benefit: minor shading on one part of the panel won’t significantly affect the performance of the other sections. This makes the low-voltage version more forgiving in bush camping environments where some shade is often unavoidable.

Portable MPPT Options

If you don’t have an un-used, permanently mounted MPPT or DCDC in your vehicle, you will need to purchase a seperate solar controller for your panel. We personally use and recommend the waterproof EPEver Tracer solar controllers. They are fully encapsulated, so can handle wet, dusty environments, and you don't have to worry if it needs to sit on the ground. As ours come pre-terminated in 50A connectors, simply plug it into your panel’s 5-metre cable, and you’ll get up to 30A of regulated charge straight into your batteries.

Why Choose the AllSpark 400W Quad Fold Panel?

With nearly 30 amps of output, this is the highest-output portable solar panel available in Australia. It’s designed, tested, and proven for tough Aussie conditions. Whether you’re powering a fridge, lights, or your full off-grid setup, this panel ensures you’ll never be left short on power.

Conclusion

The Offroad Living 2025 400W Quad Fold Solar Panels deliver unmatched performance, rugged durability, and the flexibility to suit any setup - from simple 4WD camping trips to full off-grid caravanning.

Ready to upgrade your off-grid power setup? Explore the AllSpark 400W Folding Solar Panels today, or get in touch with our team at Offroad Living for expert advice tailored to your setup.