Which type of battery uses fine, highly porous micro-fiber glass separators to absorb the electrolyte?

Which type of battery uses fine, highly porous micro-fiber glass separators to absorb the electrolyte?

• A. Gel Cell
• B. Flooded Lead-Acid
• C. Nickel-Cadmium
• D. Absorbed Glass Mat

Answer: (D)

Absorbed Glass Mat batteries use a fine, highly porous micro-fiber glass separator that soaks up the electrolyte, holding it in the mat between the plates. This immobilizes the electrolyte, creating a sealed, maintenance-free (VRLA) design that can recombine gases internally and resist spills or leaks. The glass mat acts like a sponge, keeping the electrolyte in place even when the battery is oriented in different directions or subjected to vibration. In contrast, a gel cell uses a silica-based gel to immobilize the electrolyte, not a glass mat; a flooded lead-acid battery has liquid electrolyte freely filling the cells; and nickel-cadmium uses a liquid electrolyte with separators that do not absorb electrolyte in the mat way.

Absorbed Glass Mat batteries use a fine, highly porous micro-fiber glass separator that soaks up the electrolyte, holding it in the mat between the plates. This immobilizes the electrolyte, creating a sealed, maintenance-free (VRLA) design that can recombine gases internally and resist spills or leaks. The glass mat acts like a sponge, keeping the electrolyte in place even when the battery is oriented in different directions or subjected to vibration. In contrast, a gel cell uses a silica-based gel to immobilize the electrolyte, not a glass mat; a flooded lead-acid battery has liquid electrolyte freely filling the cells; and nickel-cadmium uses a liquid electrolyte with separators that do not absorb electrolyte in the mat way.