12V solar panels charging kits for caravans, motorhomes, boats, yachts, marine

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It arrived this morning. Talk about fast. Never had a delivery BEFORE the tracking number got to me 

Roger (Bradford on tone, Somerset, UK) - April 2015

We are a trusted supplier to thousands of UK clients

We are a trusted supplier to thousands of UK clients

Back-contact solar panels

150W Semi-flexible solar panel made of back-contact cells with durable ETFE coating, for motorhome, caravan, camper, rv, boat

150W Semi-flexible solar panel made of back-contact cells with durable ETFE coating, for motorhome, caravan, camper, rv, boat
150W Semi-flexible solar panel made of back-contact cells with durable ETFE coating, for motorhome, caravan, camper, rv, boat
150W Semi-flexible solar panel made of back-contact cells with durable ETFE coating, for motorhome, caravan, camper, rv, boat

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Ex. VAT £241.66
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At Photonic Universe we love high quality solar products. That's why we have developed this state-of-the-art solar panel made of back-contact solar cells - the newest generation of solar cells which have a significantly higher efficiency compared to standard solar cells (which means they extract more sunlight energy from the same area). The back-contact solar cells used in this solar panel have an unparalleled efficiency of up to 25%, which makes this the smallest and most efficient 150W semi-flexible solar panel commercially available in the world. The solar cells used in this panel have been manufactured by SunPower - one of the largest US solar manufacturers, using the newest production equipment and cutting edge technology. If you would like to learn more about back-contact solar cells and their benefits, check out our article Introduction to back-contact solar cells which explains the differences between back-contact solar cells and regular front-and-back contact solar cells.

This 150W semi-flexible solar panel is made of strong ETFE material which has a longer service life compared to standard semi-flexible solar panels. As a result, these particular semi-flexible solar panels are extremely robust and less prone to cracking , delamination and corrosion. The lightly textured coating of this panel creates an anti-reflective surface which allows the panel to absorb a far greater amount of light, thereby increasing efficiency. ETFE material has long been used in applications where durability and high-temperature resistance is required, such as in the Eden Project, Cornwall. You can read more about ETFE and its benefits here.

This high efficiency 150W solar panel is perfect for permanent outdoor use to provide free electricity for charging 12V batteries to power various applications, such as in a motorhome, caravan, camper, boat, or for solar lighting systems, off-grid, and back up solar power systems. The panel can also be used to provide direct power supply for applications not sensitive to changes in input voltage / current (e.g. electric motors or pumps) and for various grid-tie applications.

The back-contact solar cells with an efficiency of up to 25% make this panel ideal for applications where space is restricted, or where there are obstructions on the roof.

Other benefits:

  • Semi-flexible design makes it ideal for curved roofs and surfaces where bonding is preferable (though the panel can also be fixed by bolts or screws)
  • The panel is incredibly light (only 3.15kg) which is great for all vehicles
  • High resistance to salt water environment and possibility to walk on the panel make it perfect for boats and yachts.
  • Sealed waterproof design ensures the panel can be used in all weather conditions.
  • Long-lasting, highest efficiency back-contact monocrystalline solar cells will give you years and years of consistent, free power


The panel is fitted with 2 x 0.9m of cable specially designed for solar panels to carry high currents with negligible power loss (4mm cross section). The cable comes with waterproof MC4 connectors which can be used for easy connectivity to your existing system, for linking several panels together or for connecting 4mm extension cable.

Click on the Details and Specifications tab for more information about this product.


Solar panel specifications:

  • Peak power: 150W
  • Maximum power voltage: 25.5V
  • Maximum power current: 5.88A
  • Open circuit voltage: 30.1V
  • Short circuit current: 6.35A
  • Power allowance range: +/- 5%
  • Dimensions: 1445 x 540 x 3 mm
  • Weight: 3.15 kg
  • 2 x 0.9m of high quality single core solar cable with 4.0mm cross section
  • Male and female MC4 connectors


This product is covered by a 1 year workmanship warranty provided by Photonic Universe. We will repair or replace defective items at our discretion. For more information please refer to our Terms and Conditions.

In addition, solar cells are guaranteed to produce at least 90% of nominal power in 10 years after purchase and at least 80% of nominal power in 25 years after purchase. This warranty is provided by the manufacturer of solar cells.



This solar panel does not include an installation manual as it needs to be connected to further devices such as a solar charge controller or inverter which are supplied with a manual.

Charging a 12V battery: please note this panel does require a solar charge controller / regulator to charge a 12V battery, it cannot be connected directly to the battery. This panel can only work with an MPPT controller, so please visit the Solar Charge Controllers category of our online shop for a list of suitable MPPT controllers.

Fitting: this semi-flexible solar panel is normally fitted to a roof using a suitable sealant / adhesive (not included). It can also be screwed or bolted to the roof (holes should be gently drilled into the corners of the solar panel and sides where there are gaps between solar cells).

If you need help with installation or have any technical questions we can provide FREE support - please contact us by email or phone (see Contact Us page for more information).



The following documents are available to download:

Technical Drawing of 150W Semi-flexible Solar Panel EFLX-150M