The Baghdad Battery is believed to be about 2000 years old (from the Parthian period, roughly 250 BCE to CE 250). The jar was found in Khujut Rabu just outside Baghdad and is composed of a clay jar ...

This is why the jars have been dated to one of those periods, though no exact date has been determined. Diagram of the Baghdad battery. Credit: Chatsam / Wikimedia Commons It was the Austrian Wilhelm ...

Anyway, here’s what we know. The battery is based on an ancient battery called the Baghdad Battery. The ancient battery supposedly used iron and copper with a mystery electrolyte. The scrap ...