- Who
- Unknown
- Where
- Iraq (Baghdad)
- When
Around a dozen clay jars, measuring around 13cm (5in) long, and dating back around 2,000 years, are believed to be the world's oldest electrical cells (batteries). The jars contain a copper cylinder and an iron rod, along with signs of acidic corrosion. Modern replicas of these objects have been shown to function as rudimentary electrical cells (batteries), and it is possible that they were used for electroplating. Their exact origin and age is disputed. But some reports claim they were discovered in the basement of the Baghdad Museum by German archaeologist Wilhelm Konig in 1938.
