RADpower flexible solar panels by Solar 4 RVs, Solar 4 Boats

RADpower premium flexible solar panel close-up of ETFE textured surface


These lightweight RADpower sale panels have genuine SunPower GEN II solar cells.

For RADpower lightweight solar panels with genuine SunPower GEN III solar cells CLICK HERE  (made with latest Sunpower cells GEN III cells that have improved efficiency which means less surface area for the same output power so panel dimensions are smaller)


RADpower flexible solar panels by Solar 4 RVs are.

  • Highest efficiency - made with genuine A grade SunPower cells (no seconds);
  • Premium quality - ETFE top layer for UV resistance and textured surface for extra robustness;
  • Lightweight - no glass or frame;
  • Thin - only 3mm thickness;
  • Sealed junction boxes to prevent moisture penetration that can cause corrosion;
  • Easily installed -  via install kit provided
  • Eyelets can be easily added.


Free Instll kit included with these sale panels

All RADpower sale panels come with a FREE Installation kit, detailed installation instructions and technical support with a 1 Year Warranty provided.

Install Kit Includes (Sizes 18w, 30w and 60w)

  • Very High Bond Tape attached to the panel.

Install Kit Includes (Sizes 85w and 110w):

  • Polycarbonate Strips cut to your size panel; and
  • Very High Bond Tape attached to either side of the polycarbonate strips


Sizes available until sold out:

Sizes Weight Number of Cells Voc - Open Circuit Voltage Vmp - Maximum Power Voltage Imp - Maximum Power Current Isc -Short Circuit  Current
18W 0.5 See diagram 23.4 19.8 0.91 1
30W 0.8 See diagram 21.2 17.6 1.7 2
60W 1.5 See diagram 21.1 17.9 3.8 4.1
75W 1.6 21 15.6 13.2 5.6 6.1
85W 1.8 28 18.5 15.7 5.6 6.1
100W 2 32 21.6 17.8 5.6 6.1
120W 2.6 40 26.4 22 5.5 6.1
135W 3 44 29.5 24.9 5.5 6.1

 STC:  Standard Test Conditions:  Incident sunlight of 1,000 W/m2, cell temperature of 25°C, Air mass 1.5.

An explanation of how to read solar panel specifications is available in our buyer guide available here

Some sizes are now only available in the PremiumPlus range (the dimensions will be the same but the output is higher)

he Sunpower company limits the size of flexible solar panels manufactured using their cells to 150W.  The failure rates for larger panels increases due to mechanical and thermal stresses on the panel.  All panels have a 1 year warranty.

RADpower Premium flexible solar panels dimensions

18W RADpower Premium flexible solar panel dimensions62W RADpower Premium flexible solar panel dimensions

               30W RADpower Premium flexible solar panel dimensions

The advantages of ETFE technology

ETFE (Ethylene-Tetra-Fluoro-Ethylene) is a high-strength fluorine polymer that is corrosion and stain resistant, non-stick self cleaning, and retains its clarity (and therefore light transmittance) ensuring long service life for solar panels.

It will not discolour or degrade from exposure to environmental pollution, UV light, harsh chemicals or extreme temperature variations. The textured surface offers an extra layer of protection and robustness and provides a small increase in efficiency due to its anti-reflective properties, which means more light passes to the cells.

Read our report explaining the reasons to invest in ETFE 


The importance of using genuine A grade SunPower cells

Solar panels containing SunPower E20® series cells developed in the US are the highest efficiency panel available on the market today, providing more power in the same amount of space. Efficiency refers to the percentage of sunlight hitting the panel that gets converted into electricity therefore a higher panel efficiency means that the panel can generate more power.  These cells capture significantly more sunlight and conduct more electrical current than other solar cells.  Our manufacturer is one of only a few manufacturers in China that has certification from SunPower and access to genuine SunPower cells and provides the SunPower certificate of origin.


Monitoring quality

Premium flexible solar panels with ETFE technology for quality

These Monocrystalline PhotoVoltaic (PV) flexible solar panels carry the Solar 4 RVs brand RADpower logo so we are very focused on consistent quality and reliability. 

Our manufacturer has a clear understanding of our Australian quality expectations and customer needs.  They manufacture to our specifications for each order we place.  This ongoing professional relationship and communication facilitates reliable and consistent stock quality.  We have visited the quality in China as part of our continuous improvement and quality control program.

We do not purchase other ‘grades’ of cheaper off-the-shelf panels that may have overlapping, damaged or inferior cells, sharp edges, unsealed junction boxes or silicone partially blocking cells near the junction box. 

Our support and warranty service is unmatched.


These buyer guides may assist you:

Facts you MUST know before buying flexible solar panels

Choosing a controller/regulator

Now $190.00

On Sale

Now $350.00

On Sale

20% OFF

RRP $437.00

Now $322.00

On Sale

20% OFF

RRP $402.00

Now $220.00

On Sale

20% OFF

RRP $276.00

Now $115.00

On Sale

20% OFF

RRP $143.00

18W - Black; 434x277x3mm; junction box underneath; no eyelets

This panel does not have an ETFE top surface.

Now $53.00

On Sale

50% OFF

RRP $106.00

Now $85.00

On Sale

20% OFF

RRP $106.00

Now $85.00

On Sale

20% OFF

RRP $106.00