RADpower flexible solar panels by Solar 4 RVs with ETFE technology

Premium flexible solar panels with ETFE technology for quality

RADpower flexible solar panels by Solar 4 RVs are:

  • High efficiency - genuine A grade SunPower cells;
  • Premium quality - ETFE top layer with textured surface for extra robustness;
  • Lightweight - no glass or frame
  • Thin - only 3mm thickness;
  • Easily installed -  via adhesive sealant, high bond double-sided tape, eyelets or zips (no mounting brackets required).


There are two grades of RADpower available

  1. Premium           (A grade SunPower Maxeon Gen II cells)
  2. PremiumPlus   (latest release A grade SunPower Maxeon Gen III cells)


Both have an ETFE top layer

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 


Differences between the Premium and PremiumPlus

The RADpower PremiumPlus use the new SunPower Gen III cells that have a higher efficency with higher voltage at a slightly lower amperage.  The output at higher temperatures has also been improved.  The dimensions of the PremiumPlus panel are smaller per watts because less cells are required to obtain the same output power.

Both the Premium and PremiumPlus flexible panels have a textured surface but PremiumPlus panels have a tougher, more prounounced textured surface. 


Guaranteed genuine SunPower Maxeon cells

Our manufacturer is one of only a few manufacturers in China that has certification from SunPower to access genuine SunPower cells and they provide us with the SunPower certificate of origin.  


SunPower individual cell specifications:

Comparison of Sunpower Maxeon Gen II and Gen III solar cells

Note that the efficiency of the Gen III cells has increased by 1.3% over the Gen II cells, the voltage has increased by 6.8% and the amps has reduced by 2.5%.  Very significant is the higher output at higher temperatures.  The loss at high temperatures has been reduced by over 20%, so for a panel with Gen III cells operating at a very higher temperature the increase in output is at least 4% compared with a Gen II cell.


The importance of using genuine A grade SunPower cells

Solar panels containing SunPower Maxeon 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.  


Sizes available

RADPower Premium with SunPower Maxeon Gen II cells 

  • 18W
  • 30W
  • 62W
  • 85W
  • 100W
  • 140W

RADPower PremiumPlus with SunPower Maxeon Gen III cells

  • 110W
  • 120W
  • 135W
  • 150W

The 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.


Premium RADpower range dimensions                         PremiumPlus RADpower range dimensions


18W RADpower flexible solar panel dimension diagram   30W RADpower flexible solar panel dimension diagram   62W RADpower flexible solar panel dimension diagram


 Flexible solar panels installed on curved roof surface of motorhome        Boat canopy with RADpower flexible solar panels installed      Yacht bimini with RADpower flexible solar panels 

 Kimberley Kamper with custom size black RADpower flexible solar panels       Avan with two flexible solar panels installed      Caravan free camping with solar power


Monitoring 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 factory 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.


Read our buyer guides:

Facts you MUST know before buying flexible solar panels

Choosing a controller/regulator


18W Flexible Solar Panel

ETFE top layer, textured surface

From $106.00

30W Flexible Solar Panel

ETFE top layer, textured surface

From $143.00

60W Flexible Solar Panel

ETFE top layer, textured surface

From $239.00

85W Flexible Solar Panel

ETFE top layer, textured surface

From $311.00

100W Flexible Solar Panel

ETFE top layer, textured surface

From $353.00

120W Flexible Solar Panel

ETFE top layer, textured surface, Premium Plus

From $410.00

135W Flexible Solar Panel

ETFE top layer, textured surface, Premium Plus

From $451.00

140W Flexible Solar Panel

ETFE top layer, textured surface

From $473.00