Can solar panels charge cell phones?

Solar panels are strongly affected by light, such as shadows, angles, etc., so the output voltage is unstable and cannot be stable at 5V. Generally speaking, they can be used with a mobile power supply that can output and input. at the same time. Solar panels. Of course, it would be better if it had a built-in battery. Lithium battery for cell phone? Do you want to install the cell phone lithium battery on the solar panel? No, that's not possible. It is a bit dangerous to use solar panels to directly charge cell phone batteries. If you use mobile phone batteries as power reserves, but there is no 5V output boost function, you still cannot charge mobile phones. . If you have already purchased a solar panel, you can purchase a mobile power supply and use it for 1.2 hours.The output current of the photovoltaic panel: The output current of the 6 volt 15 watt photovoltaic panel is 2.5 amps (15 watts ÷ 6 volts = 2.5 amps). The capacity of the cell phone battery: the different capacities of the cell phone battery are different. , typically 2,000 milliamp hours (mAh) Between 5,000 mAh and 5,000 mAh, charger efficiency: A charger is required to charge cell phones with photovoltaic panels. The efficiency of the charger will also affect the charging speed. the time required to charge cell phones with photovoltaic panels can be roughly calculated. Assuming that the battery capacity of the mobile phone is 3000 mAh and the efficiency of the charger is 80%, the time required to charge the mobile phone with the photovoltaic panel is: charging time = battery capacity of cell phone ÷ current of soCharger rtie × Charger efficiency Charging time = 3000 mAh ÷ 2.5A × 80%≈ 1.2 hours.