Frequently Asked Questions
FAQs About Sungold Solar Panels
Sungold’s products includes flexible solar panels, portable solar panels， rigid solar panels and PV balcony modules.
Flexible solar panels can be used in caravans, camping, yachts, boats, balcony systems,etc.
The portable solar panels are designed for outdoor use. You can take portable solar panels and portable power stations on your outdoor camping or trips.
Rigid solar panels are suitable for cabins, home balcony systems, farms, RVs,etc.
ETFE material is weather resistant, corrosion resistant and ageing resistant. Products made from ETFE have a longer warranty.
ETFE is generally only 0.025 or 0.05 mm thick, but is extremely robust. The ETFE material is also extremely light-transmissive. It is also possible to design different textures on the ETFE material for a more aesthetic appearance.
There are the followings：
Vibration of the flexible solar panel on top of the RVs causing the copper strip to break.
No voltage output due to poor soldering of the junction box.
When the product is in use, the temperature difference between morning and evening is too great and the material undergoes thermal expansion and contraction resulting in the product having the broken copper strip.
No voltage output due to hidden cracks of cells.
If the above reasons do not eliminate the problem, please contact us timely.
Sungold’s range of portable solar panels are covered with a well-made canvas-like fabric. It has two or three panels for easy folding and storage. The SPC-TF and Winner-bag series are IP65 waterproof rating and the BXF series is IP67 rating. ETFE is used as the surface material for the solar panels and can be designed in different textures which are very beautiful and also protect the surface from scratches, dirt, water etc.
With thinner cables, solar panels can be dangerous. For example, the panel is now equipped with the 1.5mm twin-core cable, if you change to 1.0mm, the cable will not be able to load the current. If the cable is overloaded for a long time, it will raise the temperature of the cable and deteriorate the insulation. This is very dangerous.
If the product is installed on a yacht, docked and not in use, there are objects on the surface that block the sunlight causing a hot spot effect. Then the local surface temperature of the product rises, affecting the bond between the surface material and the EVA. When the environmental temperature drops, it will shrink and cause localised whitening.
You should avoid using the product when it is in the shade.
Diode by the external reverse current is too large resulting in burnout.
When the solar module is working normally, the diode is in a cut-off state, when there is a reverse current, i.e. a dark current, which is generally less than 0.2 micro-amps. But the reverse current and temperature has a close relationship, about every 10 ℃ temperature rise, the reverse current doubled. When the external temperature is too high, the reverse current increases, resulting in the junction box diode burning out.
The product is subject to the hot spot effect. The hot spot effect means that under certain conditions, a module is shaded in one of its series branches, which not only fails to produce electricity, but is also used as a load to consume the energy produced by other solar modules with light. Not only will this reduce the total power generated by the module, but it will also cause the shaded part of the module to heat up, thus affecting the module efficiency.
Please take care not to shade the product during use e.g. leaves, wind and sand accumulation, which can easily damage the cells.
Sungold’s junction boxes are sealed against water using a molded silicone silicone rubber. The silicone rubber is highly effective and resistant to ageing, ensuring that the junction box is sealed effectively over the long term. The waterproof performance of the junction box will also be enhanced.
Rigid solar panels are guaranteed for up to 10 years and have a service life of up to 25 years.
The HI-POWER series portable folding solar panels and the TF series flexible solar panels are guaranteed for up to 5 years and are waterproof up to IP67.
Solar systems usually operate without much maintenance and upkeep, but there are a few things you can do as a solar homeowner to ensure you get the most out of your solar system.
Trim the trees.
The more sunlight on the panels, the better. It is best to trim nearby trees to allow as much sunlight as possible to reach your panels.
Keep your panels clean.
Take a damp cloth and wipe the surface of the panel to remove any dust or stains. Do not block the solar panels from absorbing light to generate electricity.
Yes
Solar panels can absorb sunlight directly or indirectly to generate electricity. When solar panels receive sunlight indirectly, they can still output electricity even if they are covered by clouds. It’s just that they lose efficiency. On cloudy days, solar panels can only produce on average between 10% and 25% of their normal output. This depends on the thickness of the cloud cover.
Solar panels work in all four seasons of the year. In winter, however, solar power production is at its lowest level due to short sunshine hours and variable weather.