How to Identify the A, B, and C Grades of Solar Panels

The grades of solar panels can be divided into A grade, B grade, C grade and D grade, and A grade solar modules can be divided into two grades, A+ and A-. The cost gap is also very large. So what kind of solar panel is called A grade, and what kind of solar panel is called D grade? Here is a brief introduction for you:

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A-grade modules: A-grade cells are the highest quality cells that can be used in solar modules;

B-grade modules: B-grade cells are slightly lower than A-grade, and the components can be downgraded to use complete cells;

C-grade modules: C-grade cells are seriously poor in appearance and have missing corners. They are only suitable for cutting cells to make small components and supplying them to customers with special needs;

C-grade modules: C-grade cells are seriously poor in appearance and have missing corners. They are only suitable for cutting cells to make small components and supplying them to customers with special needs;

D-grade modules: D-grade cells are fragments, which are supplied to customers with special needs or treated specially.

So how should we judge?

Judge the grade of solar panels from the following two points:

1. Appearance Judgment

(1) Look at the surface

Carefully check the tempered glass surface, the products of small manufacturers are relatively rough, and the residual silica gel on the surface will reduce the power generation efficiency of the panel.

(2) Look at the battery sheets

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Check the cells for edge chipping and cracks. There are many informal manufacturers who use broken battery sheets to splice together. This method has great risks and hidden dangers, which will affect the safe use of the entire battery board.

(3) Look at the back

Look at the quality of the pressure on the back. If there is unevenness after pressure bearing, such as bubbles, wrinkles, etc., it is regarded as a relatively low-quality product.

(4) Look at the frame

Is it straight. Due to the low barriers to entry in the solar panel industry, many small manufacturers use manual framing, the shape is not strictly rectangular, and the firmness is greatly reduced.

(5) Look at the silica gel

See if the silica gel is evenly distributed around the back, and whether it is tightly infiltrated into the gap between the backplane and the frame.

(6) Look at welding

Carefully observe whether there is any missing welding in the string welding of the cells. At the same time, it is also necessary to check whether the arrangement of the cells is regular.

(7) Look at the junction box
Finally, check whether the junction box is firm, whether the junction box cover can be firmly and tightly attached to the junction box, and whether the outlet wire lock can rotate freely and can be tightened.

In terms of price, grade B solar panels are generally cheaper than grade A. The materials used and the cost of the panels will be cheaper than grade A ones. Many merchants in order to reduce production costs, they tend to use B-grade cells to produce, to provide customers with more affordable photovoltaic modules.
In terms of lifespan, although B grade solar panels are of slightly lower quality than A grade panels and have certain defects, it does not affect its ability to generate electricity as usual. However, the efficiency of using B grade solar panels is bound to be lower than that of using A grade solar panels, therefore, the lifespan of B grade solar panels will be shorter than that of A grade ones, which also means that the service life of B grade solar panels is longer than that of A grade ones.
In summary, we can come across that the use of B grade solar panels can reduce production costs, provide customers with more affordable prices, allow more customers to contact and use solar panels, and make the use of solar panels more routine. But at the same time, the B grade solar panels itself has the defects and quality will still affect the efficiency and performance in the process of use, so when communicating and cooperating with customers, we should consult the actual needs of customers, combined with the cost of production, to ensure that the use of solar panels and programs to meet the exact standards of customers.

Contact us to discuss your requirements of B Grade Solar Panel. Our experienced sales team can help you identify the options that best suit your needs.