Frequently asked questions about solar panels

How much energy can a solar panel drive?
A: It depends on the battery capacity and inverter power used by the user. This is out of the control of the solar panels. The solar panel of the solar street lamp is only used to charge the battery. It doesn't store electricity. Solar energy only charges batteries, which discharge electrical equipment. This is a charge discharge process. The size of the inverter to choose how much power to drive electrical appliances, the size of the battery depends on how long the power supply can provide. Customers need to know some basic knowledge of electricians. If they don't understand these principles, they can consult more.
Many users ask why the current of a multimeter cannot reach the rated current?
A: Because the short-circuit current is a parameter to measure the quality of solar cells, this parameter can only be detected by the module tester, and the multimeter itself is the load, so the parameter to be checked is the data of the working current. In addition, the inspection condition of solar panels is 1000 W / m2, the illumination is 25 ℃, and the inspection should be carried out under the standard light intensity. Solar panels will encourage users to equip solar cells that meet local requirements according to different purchase areas and climatic conditions.
Three. Can solar panels work on cloudy days?
A: cloudy days depend on light intensity. If the light is very strong, there will be a weak current and voltage, but this is tens to hundreds of times worse than the current and voltage in sunny days. However, solar panels usually try to absorb light energy and then store it. Generally speaking, the stronger the light, the better the power generation effect. The weaker the light, the worse the effect.
Solar panels don't need controllers, OK?
A: Use the controller! Otherwise, it may lead to overcharge and overdischarge of the battery and affect the service life of the battery. The function of the controller is to intelligently control the solar energy, battery and load, and then maintain the battery to avoid overcharge, over discharge, short circuit maintenance, and intelligently control the load running time. For more information, refer to the controller manual. In addition, the load of the controller also requires the current. The load of 10A controller generally does not span the current of 12a. Relatively speaking, 10a can carry the electrical appliances below 120W, 20A can carry the electrical appliances below 300W, 30A can carry the electrical appliances below 500W, and the buyer can choose freely.
Which is better, single crystal or polycrystalline?
They are all good products. The specific difference lies in the high power generation, high conversion efficiency and slower attenuation than the polycrystalline plate. In the cloudy climate, the time-sharing weak light of polysilicon panel is better than that of single crystal. Therefore, polysilicon in the south is mainly used in rainy weather. Users in the North mainly use single crystal, because the climate in the north is better than that in the south.
When using, the solar panel must face 12 o'clock. The angle between the panel and the ground should be 30-45 degrees and the viewpoint should face south. Don't put the solar panels on the ground. In this way, the power generation is very low.