What is the solar cell?
According to Wikipedia a solar cell or photovoltaic cell is “an electrical device that converts the energy of light directly into electricity by the photovoltaic effect. It is a form of photoelectric cell, defined as a device whose electrical characteristics, such as current, voltage, or resistance, vary when exposed to light. Solar cells are the building blocks of photovoltaic modules, otherwise known as solar panels.”
1) It is a solar cell, not solar panel, the solar panel is made of solar cells.
2) It is very fragile and weak. No matter in the process of unpacking or welding, pay special attention to handling.
3) Solar cells need to be used by DIY enthusiasts with strong hands-on ability.