Leyden jar
The first electrical storage jar was created by Ewald Georg von Kleist on 11 October 1745. He was  the dean of the cathedral of Cammin in Pomerania, on the north coast of Germany (at that time a separate country).  He was interested to find whether static electricity could be stored in a bottle, because he knew that electricity could not pass through glass. He thought he might be able to capture and hold a small amount. He only had a small experimental friction generator.