Baghdad 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.
The Riddle of "Baghdad's batteries"
Arran Frood investigates what could have been the very first batteries and how these important archaeological and technological artefacts are now at risk from the impending war in Iraq.
I don't think anyone can say for sure what they were used for, but they may have been batteries because they do work Dr Marjorie Senechal
War can destroy more than a people, an army or a leader. Culture, tradition and history also lie in the firing line.
Iraq has a rich national heritage. The Garden of Eden and the Tower of Babel are said to have been sited in this ancient land.
In any war, there is a chance that priceless treasures will be lost forever, articles such as the "ancient battery" that resides defenceless in the museum of Baghdad.
For this object suggests that the region, whose civilizations gave us writing and the wheel, may also have invented electric cells - two thousand years before such devices were well known.
Link to More About This Mystery Object :-
http://www.world-mysteries.com/sar_11.htm