The quality check for Tunto best off grid solar system is strictly carried out. It will be inspected by machines or by visual mainly in terms of board thickness, flatness, warping degree, veneer's paint film, etc. 2.
The product is built to last. Thanks to its durable construction, it is able to withstand great abuse under harsh environments. 3.
This product can help people finish tasks that are too heavy or difficult. It significantly reduces the work burden for people. 4.
The product is easy for people to control and only needs a little workforce. This will help lower operating costs.
|Technical parameters of 20W mono solar modules|
|Origin (country) ||China|
|Nominal power Pmax[W] ||20|
|Tolerance [%] ||±3%|
|Kind of cell( mono,poly) ||Mono|
|Cells per Module ||36(4*9)|
|Conversion Efficiency ||18.5~19％|
|shape of cell "x" mm × mm ||78*39|
|Voltage Mpp Vmp[V] ||18V|
|Current Mpp Imp[A] ||1.11A|
|Volt Open circuit Voc[V] ||21.42V|
|Short out current Mpp Isc[A] ||1.24A|
|Max system Volt [V] ||1000V|
|Length [mm] ||420|
|Width [mm] ||350|
|Thickness(without box) [mm] ||25|
|kind of Frame(l,c.alu,none…) ||Alu|
|Guarantee on the whole product [years]||5 years|
|Kind of glass and its thickness [mm] ||AFG 3.2mm|
|Temperature Coefficient Current Isc mA/℃ ||+0.08%℃|
|Temperature Coefficient Voltage Voc mV/℃ ||-0.37%℃|
|Temperature Coefficient Power Pmax/℃ ||-0.44%℃|
Guangzhou Tunto Green Power Technology Co., Ltd. is a internationally famous manufacturer of off grid solar panel kits with high quality. 2.
So as to enhance the competitiveness of Tunto, it is necessary to use new advanced technologies. 3.
Our successful principle is making the workplace a place of peace, joy, and happiness. We create a harmonious environment for each of our employees so that they can freely exchange creative ideas, which eventually contributes to innovation. Welcome to visit our factory! We want to have satisfied customers who trust our products for a long time. We know that the image and the name of a brand acquire the real value only at the moment when good work can be seen behind them. Welcome to visit our factory! We care about the community, the planet, and our future. We are committed to protecting our environment by executing strict production plans. We are putting every possible effort in reducing negative production impact on the earth.