There are many stories of salt and grapes in the Bible.
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"You are the salt of the earth; but if the salt has become tasteless, how can it be made salty again? It is no longer good for anything, except to be thrown out and trampled under foot by men.
When the wine ran out, the mother of Jesus said to Him, "They have no wine."
And Jesus said to her, "Woman, what does that have to do with us? My hour has not yet come."
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https://www.youtube.com/watch?v=2Als4w_SG4IIf the grape juice is fermented well, grape vinegar with a pH of 3.5 to 4.5 is obtained.
Heat it well and cool it with water so that it does not evaporate to obtain high purity vinegar with a pH of about 2.
You can generate electricity by mixing salt and putting a copper plate and a soft iron rod together in a jar.
The reason for the influx of iron into Egypt was the Eastern Hittites spreading it to Egypt.
Ironware was supplied to Egypt mainly by invasion.
The point is that you could generate electricity in the field as long as you had only regular iron and copper plates.
It was not only for Egyptian priests, but also for Moses as the God of Jehovah, and it was possible to distribute it to the general public.
If there is only one pot, the electricity is weak,
If you connect several jars in series or in parallel, you get enough electricity to melt iron.
There are records of the use of zinc for treatment in ancient Egypt.
So, it’s not that zinc was refined as a metal and used for batteries,
Just mix in grape vinegar and salt water.
How many times have you experimented with increasing the amount of electric current in 2000 years?
Egypt was able to make batteries before 1500 B.C.
It started by accidentally discovering that electricity is generated when wine and salt are mixed and left to stand for a certain period of time in the process of making a body into a mummy.
The reason why Upper Egypt-Scarabs and Lower Egypt-Djed compete is also because they overlap in the field of electromagnetic forces.
https://www.youtube.com/watch?v=jrZWiiYYC0k