The density of battery acid is approximately 1.83 g/cm³.
This high density, nearly twice that of water, is a key characteristic of battery acid, which is typically a sulfuric acid solution used in lead-acid batteries. The concentration of sulfuric acid in the solution affects the density. Fully charged batteries will have a higher concentration of sulfuric acid, and therefore a higher density, than discharged batteries. This density difference is often used to determine the state of charge of a battery.
It's important to note that battery acid is highly corrosive and should be handled with extreme care.
