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Best Seller in Australia

250W Glass Roof Top Solar Panel - 12V Monocrystalline

Power your off-grid adventures with premium A-grade monocrystalline cells. Perfect for caravans, 4WDs, boats, and camper trailers across Australia.

$199.95 AUD $299.95 Save $100
Buy Now - Limited Stock
20.6% Efficiency
Bypass Diode Tech
2 Year Warranty
250W 12V Monocrystalline Solar Panel for Caravan and 4WD
Premium Quality
A-Grade Monocrystalline Cells
High Efficiency
20.6% Conversion Rate
Aussie Tested
Built for Australian Conditions
Fast Shipping
Australia Wide Delivery

Why Choose This Solar Panel?

Industry-leading technology designed for Australian conditions

A-Grade Monocrystalline Cells

Premium solar cells deliver 15-25% more efficiency than polycrystalline alternatives with superior low-light performance.

Bypass Diode Technology

Maintains power output even when partially shaded. Perfect for installations where trees or structures may cast shadows.

Thick Tempered Glass

Anti-reflective tempered glass protects against hail, stones, and accidental knocks while maximising light absorption.

Weather Resistant

Operating temperature from -40°C to 85°C with waterproof PV connectors. Built to handle Australian extremes.

Permanent Mount Design

Black powder-coated aluminium frame designed for secure, permanent installation on caravans, 4WDs, boats, and trailers.

20.6% Efficiency

Industry-leading conversion efficiency means more power from the same panel size, maximising your roof space.

Technical Specifications

Complete specifications for the 250W Solar Panel

Electrical Specifications
Maximum Power (Pmax) 250W
Max Power Voltage (Vmp) 20.69V
Max Power Current (Imp) 12.37A
Open Circuit Voltage (Voc) 24.86V
Short Circuit Current (Isc) 13.06A
Conversion Efficiency 20.6%
Power Tolerance +/- 5%
Physical & Environmental
Dimensions 1725 x 765 x 35mm
Weight 13.80 kg
Cell Type A-Grade Mono
Frame Black Aluminium
Operating Temperature -40°C to 85°C
Max System Voltage 1000VDC
Connector Type Waterproof PV

Product Details

Everything you need to know about the 250W Solar Panel

Premium Off-Grid Power Solution

The 250W Glass Roof Top Solar Panel is engineered for Australians who demand reliable, high-performance solar power for their off-grid adventures. Whether you're exploring the vast Australian outback, enjoying coastal camping, or living the caravan lifestyle, this solar panel delivers consistent power to keep your batteries charged and your appliances running.

Superior Cell Technology

Built with premium A-grade monocrystalline solar cells, this panel offers 15-25% greater efficiency compared to standard polycrystalline alternatives. The monocrystalline technology excels in low-light conditions, meaning you'll generate power even on overcast days or during the early morning and late afternoon hours when the sun is at a lower angle.

Bypass Diode Innovation

One of the standout features is the integrated bypass diode technology. Traditional solar panels can experience significant power loss when even a small portion of the panel is shaded. With bypass diodes, the panel maintains power output by routing electricity around shaded cells, ensuring you get maximum power regardless of partial shading from:

  • Tree branches and foliage
  • Roof-mounted accessories like air conditioners or antennas
  • Shadows from awnings or neighbouring structures
  • Bird droppings or debris accumulation

Built for Australian Conditions

The thick tempered anti-reflective glass is designed to withstand the harsh Australian environment. It resists damage from hail, stones kicked up on dirt roads, and accidental impacts. The anti-reflective coating maximises light absorption while the robust construction handles temperature extremes from -40°C to 85°C.

Versatile Applications

This 250W solar panel is ideal for a wide range of applications:

  • Caravans & Motorhomes: Permanently mount on your roof for constant battery charging
  • 4WDs & Utes: Power your camping setup while exploring remote locations
  • Boats & Marine: Waterproof connectors make it suitable for marine environments
  • Trailers & Campers: Keep auxiliary batteries topped up during travel
  • Off-Grid Cabins: Reliable power for remote properties

Easy Integration

The panel comes with waterproof PV connectors for hassle-free installation. The black powder-coated aluminium frame provides a sleek, professional appearance while offering excellent corrosion resistance. Compatible with most MPPT and PWM solar charge controllers, integration into your existing 12V system is straightforward.

What's in the Box

  • 1x 250W Glass Roof Top Solar Panel
  • Pre-attached waterproof PV connectors
  • User manual with installation guidelines

Customer Reviews

See what Australian customers are saying

4.8
Based on 20+ reviews
MT

Michael T.

Queensland, AU • January 2025

Installed two of these on my caravan roof. The bypass diode tech is brilliant - even with my air con unit casting partial shade, I'm still getting excellent output. Highly recommend for serious travellers.

Verified Purchase
SW

Sarah W.

Victoria, AU • December 2024

Excellent build quality. The tempered glass gives me confidence it'll handle anything the bush throws at it. Running my fridge and lights with no worries now. Great value for money!

Verified Purchase
PJ

Peter J.

Western Australia • November 2024

Third solar panel I've bought and easily the best performer. The 20% efficiency is noticeable - getting more amps than my old 300W panel. Perfect for my 4WD setup in the Kimberley.

Verified Purchase
JK

Jenny K.

NSW, AU • October 2024

Solid panel that works well on our boat. Only reason for 4 stars is I wish it came with mounting brackets included. Otherwise, performs exactly as advertised. Fast delivery too!

Verified Purchase
DM

David M.

South Australia • September 2024

Mounted on my off-grid shed. Even in winter, I'm generating enough to run my workshop tools. The monocrystalline cells really do perform better in low light conditions. Top quality product.

Verified Purchase
RL

Robert L.

Northern Territory • August 2024

Living in the Top End, I needed something that could handle extreme heat. This panel hasn't missed a beat through 45+ degree days. The efficiency rating is accurate - tested it myself!

Verified Purchase

Frequently Asked Questions

Got questions? We've got answers

Yes, absolutely! This 250W solar panel is specifically designed for 12V systems commonly found in caravans, motorhomes, and camper trailers. With a maximum power voltage of 20.69V and maximum power current of 12.37A, it's perfectly suited for charging 12V battery banks when paired with a compatible MPPT or PWM solar charge controller.
Bypass diodes are a game-changer for real-world solar installations. In traditional panels, if even a small section is shaded, the entire panel's output drops dramatically. Bypass diodes create alternative pathways for electrical current to flow around shaded cells, maintaining power output from the unshaded portions. This means you'll continue generating significant power even when tree branches, rooftop accessories, or other obstacles partially shade your panel.
Glass-topped rigid panels like this one offer several advantages over flexible panels. They typically have higher efficiency (20.6% vs 15-18% for most flexible panels), longer lifespan due to better protection from the elements, and superior heat dissipation which maintains performance in hot conditions. The tempered glass also provides excellent protection against impacts, hail, and UV degradation. Flexible panels are better when you need to conform to curved surfaces, but for flat roof installations, rigid glass panels are the superior choice.
Both MPPT and PWM controllers will work with this panel, but we strongly recommend an MPPT controller for best results. MPPT (Maximum Power Point Tracking) controllers are 20-30% more efficient than PWM controllers because they convert the panel's higher voltage into additional charging current. Given this panel's specifications (Vmp 20.69V vs your 12V battery), an MPPT controller will capture significantly more of the available power, especially in less-than-ideal conditions.
A 250W panel generating approximately 12-15 amps in good conditions is suitable for battery banks ranging from 100Ah to 400Ah, depending on your usage patterns. For a typical caravan with moderate power consumption (fridge, lights, phone charging), a single 250W panel paired with a 200Ah battery bank provides excellent energy independence. For higher consumption setups with inverters running power tools or appliances, consider installing two panels in parallel for 500W total capacity.
Maintenance is minimal. Clean the glass surface periodically with water and a soft cloth or squeegee to remove dust, bird droppings, and debris. Avoid using abrasive cleaners or pressure washers. Check the cable connections occasionally to ensure they remain tight and corrosion-free. The tempered glass and sealed construction mean this panel is largely maintenance-free - most owners simply hose it down every few weeks or after dusty trips.
Yes, this panel is designed for DIY installation. The pre-attached waterproof PV connectors make electrical connections straightforward - simply plug into compatible extension cables or directly into your charge controller. For mounting, you'll need appropriate brackets (sold separately) and basic tools. The panel dimensions are 1725mm x 765mm and weighs 13.8kg, so it's manageable for one person but easier with two. Always follow proper safety procedures when working at height and ensure your mounting solution is appropriate for your roof type.
This solar panel comes with a 2-year limited warranty covering manufacturing defects and performance issues. The warranty covers defects in materials and workmanship under normal use conditions. It does not cover damage from improper installation, physical abuse, or extreme events beyond the panel's rated specifications. For warranty claims, you'll need proof of purchase and the panel's serial number.

Ready to Go Off-Grid?

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Affiliate Disclosure

True Blue Solar (truebluesolar.com) is an affiliate marketing website. We may earn a commission when you purchase products through links on this site at no additional cost to you. This helps support our website and allows us to continue providing valuable content. Product prices and availability are accurate as of the date/time indicated and are subject to change. We only recommend products we believe will benefit our Australian customers. Our reviews and recommendations are based on publicly available information and customer feedback.