Any tech-geek with a sense of history has heard of the Baghdad Battery.
Back in 1936, workers outside of Baghdad discovered this 6" tall clay pot with internal components that resemble much like today's batteries containing a copper cylinder with an iron rod that has acidic corrosion. The cylinder also has soldered ends with similar make-up to solder that we use today. Amazing thing is that these pots were dated as far back as 248 BC...!
German archaeologist , Wilhelm Konig, examined the object and came to a surprising conclusion that the clay pot was nothing less than an ancient electric battery.
The ancient battery in the Baghdad Museum, as well as those others which were unearthed in Iraq, are all dated from the Parthian occupation between 248 BCE and 226 CE. However, Dr. Konig also found copper vases plated with silver in the Baghdad Museum, excavated from Sumerian sites in southern Iraq, dating back to at least 2500 BCE. When the vases were lightly tapped, a blue patina or film separated from the surface, which is characteristic of silver electroplated onto copper base. It would appear then that the Parthians inherited their batteries from one of the earliest known civilizations.
Pretty amazing find, question is what these batteries were used for? Some speculate they were used for metal plating finishes or even shocking people of faith into a euphoria...
....the sci-fi part of me wants to think a time traveler from today was in a bind and needed to create some power for their time-machine..!! movie rights anyone?