uulsid1 posted an update 3 weeks ago
18V 6W ETFE laminated solar panel for folding solar charger or portable solar charger
Nominal Peak Power (Pm) 6W
Maximum Power Voltage(Vmp)18V
Maximum Power Current(Imp)334mA
Short Circuit Current (Isc)355mA
Open Circuit Voltage (Voc)21.6V
Optimized Cell Efficiency (ƞ)20%
Net Weight160 Grams
Standard Test ConditionAM1.5 1000W/㎡ 25℃
Solar cell model
High efficiency Mono Crystalline 156x156mm solar cell
Working temperature : -40ºC to +80ºC
1 year: Materials and workmanship defects
Small solar panels are widely used in portable electronic devices.
The choice of materials that will cover the solar cells is the most important aspect in ensuring the lifespan and the mechanical properties of the panel. Here is one of the most widespread small solar panel models on the market called ETFE laminated solar panel.
As you can see, there are not many layers of cell protection: the first is the EVA, a very common material in the industry, which is used in solar cell encapsulation through a thermal lamination process of the cells to make them completely isolated from any contact with water, powder, dust.
We need to find a material to guarantee a high durability of the product for meet strict resistance requirements like sea side. While trying to preserve the flexibility and compactness of the panel, a ETFE outer protective layer is a better option. Ethylene tetrafluoroethylene (ETFE) is a fluorine-based plastic. It was designed to have high corrosion resistance and strength over a wide temperature range. ETFE has a relatively high melting temperature, excellent chemical, electrical and high-energy radiation resistance properties.
ETFE is also self-cleaning (due to its nonstick surface) and recyclable.ETFE has an approximate tensile strength of 42 MPa (6100 psi), with a working temperature range of −185 °C to +150 °C.ETFE resins are resistant to ultraviolet light.
With above advantages like durability, self-cleaning, high light transmission and UV resistance, the folding solar charger can give consistent power to charge your mobile phones or other electronic devices without worrying of the lifespan. China Small Solar Panel factory