There are two types of VRLA Batteries: the Gel Cell and the
Absorbed Glass Mat (AGM).
Gel Cell Battery \u2013 As its name suggests, the
Gel Cell Battery has an immobile jelly-like electrolyte where the sulfuric acid is mixed with fumed (pyrogenic) silica used as thickening agent.
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A valve regulated lead\u2013acid (VRLA) battery, commonly known as a sealed lead\u2013acid (SLA) battery, is a type of lead\u2013acid battery characterized by a limited amount of electrolyte ("starved" electrolyte) absorbed in a plate separator or formed into a gel; proportioning of the negative and positive plates so that oxygen ...
