Description: A 12V deep cycle battery is charged during the day by a small 4”x6” PV panel which is wired to charge any 12V devices during the day or at night. Cell phones, battery chargers, and any other device that can be plugged into a cigarette lighter in a car.
Justification: I consider this appropriate technology because this system can be used independently from the grid and helps others understand how solar power can work by looking at this basic display.
Issues: It takes a long time for the 12V battery to charge because the solar panel is so small. The battery is also not environmentally friendly.