The output power Wp of the solar cell we are talking about is the output power of the solar cell under the conditions of standard sunlight, namely: the 101 standard defined by the European Commission, the radiation intensity is 1000W/m2, the air quality is AM1.5, and the battery temperature is 25 degrees Celsius. This condition is about the same as the sun's illumination around noon on a sunny day, so it is not as some people imagine, as long as there is sunlight, there will be a rated output power, and even solar cells can be used normally under fluorescent lights at night. This means that the output power of solar cells is random, and the output power of the same solar cell is different at different times and locations.
