“I built a potato battery out of 500 pounds of potatoes. It powered a small sound system. […]
Each potato generates about 0.5 volts and 0.2 milliamperes. I connected groups of potatoes together in series to increase voltage and then connected these groups together in parallel to increase amperage. The entire 500 lb battery generated around 5 volts and 4 milliamperes.”
Good Noodles.