Ha! The specific measurement is troublesome. You need a voltmeter, an ammeter and a light intensity meter. Only when a certain charge is added is a more precise measurement possible. Typically used based on experience. About 0.003 ~ 0.01 W per square centimeter. Typically 0.04W, voltage may vary depending on series or parallel connection.
How to measure solar panel parameters
Introduction How to measure solar panel parameters! The specific measurement is troublesome. It requires a voltmeter, an ammeter and a light intensity meter. Only when a certain charge is added can it be compared.