PARTHIAN BATTERY

Not all scientists accept the "electric battery" description for the jars. If they were batteries, though, who made them and what were they used for?

Unfortunately, there is no written record as to the exact function of the jar, due to destruction of Iranian literary sources and libraries by Arabs upon invasion of Iranian territories in 7th century CE, but the best guess is that it was a type of battery.

Scientists believe the batteries (if that is their correct function) were used to electroplate items such as putting a layer of one metal (gold) onto the surface of another (silver), a method still practiced in Greater Iran today.