How does PERC work? - YouTube video

A new YouTube video was released for you from
our GWL production.

Find out more about the Solar Panel improvements and how they work, whether it's efficiency upgrade - PERC or design upgrade
- Full Black, all these tech solar panel innovations are shown in the YouTube video.

Presented solar panel:
Solar Panel Mono 330 Wp, PERC, Full Black

New ELERIX Solar Panels are HERE!

We are currently fully restocked with new ELERIX Solar Panels which can be delivered to your place within 3 days (EU) .

We are ready to satisfy any demand now. Whether you wish to buy one pallet or 5 pallets...does not matter, we got a lot. Order in bulk and secure volume discounts.

The types of solar panels available:

ELERIX Solar Panel Poly 285 Wp
ELERIX Solar Panel Mono 320 Wp
GWL/Sunny Solar Panel Mono 330 Wp, PERC, Full Black
ELERIX Solar Panel Mono 450 Wp, PERC
ELERIX Solar Panel Mono 135 Wp, PERC,Shingled, Full Black

Summer season is coming up and the sun will be shining!

Check the state of your batteries in real-time

New battery capacity testers are in stock now.

These battery testers can test the voltage,current and capacity of your battery and help you to know the state of the battery in real-time.

The LCD display shows:

  • Present voltage
  • Present current
  • Present capacity
  • Capacity percentage
  • Charge, discharge indicator
  • And more

More details, features, pictures and manuals can be found in the links below:

High Precision LiFePo4 battery tester BC16 with shunt 350A which can monitor the batteries with voltage from 10 V - 120 V


Battery Capacity Tester BC21 with 350 A shunt which can monitor the batteries with voltage from 8 V - 80 V

The beauty amongst all solar panels - Full Black

Have you ever looked at your roof and told yourself: "Great! Now I'm energy self-sufficient...but I wish it looked better on my roof" ?

Our elegant full black version of a solar panel could help you out in this case and get you rid of this thought.

With a combination of the black color of cells (mono), black frame and black cover of busbars, the solar panel makes an attractive full black design which looks great on a house roof and gives the panel a nice “neutral” look.

The full black design of panels is then the opposite
of the classic poly design, where the poly cells, on the other hand, create a blue-ish look.

Well, just look at the picture, where you can spot the differences :)

More information and pictures:
Solar panel GWL/Sunny Mono 330Wp 60 cells, PERC
(Full Black)


Solar panel GWL/Sunny Poly 285Wp 60 cells, (ESP285)

Caravan/RV lovers, attention! New guide available!

Dear caravanners,

If you haven’t already seen it, you might check our new guide which we prepared for you in a form of an installation manual brochure. Available for download in both languages – English & Czech.

The manual is based on the most frequent questions which you may ask yourself before starting your Caravan/RV project. Questions such as - What type of power connection to choose? What battery to choose and where and how to install it? All these and more are answered in our descriptive guide.

Get your project going and be ready before the upcoming summer season. Caravans/RVs are during the pandemic the most convenient way to travel. :)
Winston 12V Sets BMS GEN3
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