I know this question sounds like it should be in the sci-fi site (and maybe it should), but I'm more interested in the state of metallurgy etc at the time of the Roman Empire (let's say around 0 AD) and if a modern electrical engineer, if somehow magically transported back to that time, would be able to create and store electricity in a way that would be useful.
For example, did the Romans have the technology for drawing copper wire thin enough to create a rotor/stator setup, and did they have the ability to create a mechanical crank and gears to turn this type of primitive electromagnetic motor, as well as all concomitant parts (housing, shafts, etc.)? Would they have had the grease?
Thanks.