I have no experience using solar panels or electrical engineering. Please tell me how can I use a solar panel mounted on my drone to charge its batteries mid flight.
The added weight from solar panels and charging mechanism will only really pay off if you have super efficient plane with lots of solar panel surface, e.g. https://solarimpulse.com/, or https://www.atlantiksolar.ethz.ch/.
That being said, to find out more about the components needed: https://lmgtfy.com/?q=charge+lipo+battery+using+solar+panel