No schematic for boiled potatos

Sure.. Proper use of food! A pot of beans can also light up a room when properly processed and ignited!

Jamie

"The potato battery kit, which includes two metal electrodes and alligator clips, is easy to assemble and, some parts, such as the zinc cathode, can be inexpensively replaced. The finished device Rabinowitch came up with is designed so that a new boiled potato slice can be inserted in between the electrodes after the potato runs out of juice."

Potatoes may be cheap enough, but add the cost of cooking and replacement zincs, do you really have something worth bragging about? And it took a university "scientists" to "discover" what has been a kid's toy to power LCD clocks for 20 years or so?

Doubtless a paper towel or other fibrous material wetted with salt water or vinegar would work as well....

Not having a source of strip zinc. I made batteries from those compartmentalized plastic parts boxes using strips of copper and aluminum flashing bolted together and slipped into adjacent salt water filled compartments and powered transistor radios in the 60's.