What is battery water made up?

Battery water consists primarily of deionized or distilled water, which has undergone a purification process to remove impurities such as minerals and salts. The purpose of using purified water in batteries is to prevent the formation of scale, corrosion, and other undesirable reactions that could affect the battery's performance and longevity.

While pure water lacks electrolytes necessary for electrical conduction, some types of batteries, such as lead-acid batteries, require specific electrolytes to function. In lead-acid batteries, for instance, the electrolyte is a mixture of sulfuric acid and water. The sulfuric acid provides the necessary ions for electrical reactions to occur within the battery.

However, it's important to use only the recommended type of water in batteries, as certain impurities or additives in tap or mineral water can potentially damage the battery cells. Therefore, it is crucial to refer to the battery manufacturer's guidelines or recommendations regarding the type of water to be used for specific battery applications.