Construction

Sealed batteries are Starved Absorbed Glass Mat Electrolyte, Starved Gelled Electrolyte and Flooded Electrolyte in there construction. In the Flooded Electrolyte types a solution of sulfuric acid and water is used that can spill out of the battery if it is tipped. Even the Sealed Maintenance Free Flooded batteries will eventually spill there electrolyte if left on the side or upside down for any length of time. Sealed and Starved or Gelled Electrolyte types use a solution of sulfuric acid and water suspended in a gel or a absorbing glass-mat. The Sealed Non-spill able characteristic of these batteries is a by product of there construction and how they work — More on this later.