you get melted by a fat guy
You will ruin the battery.
Water or acid.
You will die.
The battery would lose its acid.
it will cause a chemical reaction between the two materials
The acid turns to water. Batteries will freeze in cold weather if they are discharged. When the battery is charged, the water turns back to acid.
A battery acid is a variety of acid used as an electrolyte in a battery - usually sulphuric acid.
ya get clean
In certain circumstance, such as getting rid of skunk odour, a person will bathe in vinegar (a weak acid). So there is no reason why a vampire could not do the same.
I assume we're talking about the typical wet-cell battery. Usually it is filled with a mixture of acid and water. If the water is gone the battery is damaged and cannot be fixed by refilling it with acid and water.
The minerals in the water will react with the acid and become compounds that will affect the life and capacity of the battery.
The acid will leak out making the battery less effective and causing everything around it to get eaten up.