The Baghdad Battery is an ancient artifact discovered in Iraq in 1936. It is believed to be an ancient electrical device, consisting of a ceramic pot, a copper cylinder, and an iron rod. It is thought to have been used to generate electricity, possibly for medical or religious purposes. The battery
From Wikipedia
The Baghdad Battery or Parthian Battery are the names given to an artifact consisting of a ceramic pot, a tube of copper, and a rod of iron fixed together with bitumen. It was discovered in present-day Khujut Rabu, Iraq in 1936, close to the ancient city of Ctesiphon, the capital of the Parthian and Sasanian empires, and it is believed to date from either of these periods.