1. In terms of types, solar panels are divided into single crystal and polycrystalline.
Monocrystalline silicon solar panels have higher efficiency and less light attenuation, but are expensive, and polycrystalline silicon solar panels have relatively low efficiency, but are cheap.

2. There are many external dimensions and specifications of solar panels. You must decide which size is more suitable according to your own street lamp installation environment. Generally speaking, under the same power, it is more appropriate to choose a smaller size.
3. The power generation capacity of solar panels is closely related to light intensity, ambient temperature, and installation angle. Changes in each link will affect its power generation effect.
4. Raw materials, battery components generally include battery sheets, eva, backplane, aluminum alloy frame, and tempered glass. Tin-copper bending and tightening phenomenon; and bubbles will be generated, which proves that there will still be residual gaps during the 160-degree high-temperature heating and sealing process. The battery sheet attaches great importance to sealing and anti-oxidation, otherwise it will be 1-2 years in the open air The service life of the frame, including the filling of the frame gap, is a very important part of the process.