VRLA batteries are a type of lead-acid battery that uses a valve to regulate gas pressure. Which option correctly names this type?

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Valve Regulated Lead Acid is the correct name. VRLA describes sealed lead‑acid batteries that use a valve to manage internal gas pressure, allowing produced gases to be recombined rather than vented. The valve opens only to relieve excess pressure, keeping the battery maintenance‑free and suppressing water loss. Two common VRLA designs are AGM (absorbs electrolyte in glass mats) and Gel (electrolyte in a gel).

Why the other terms don’t fit: a vacuum‑regulated design isn’t how these operate, since VRLA relies on maintaining pressure rather than creating a vacuum. A voltage‑regulated label would refer to a regulation scheme, not the battery type name. A vented/regulating description would imply a vented, not sealed, design, which contradicts the sealed, valve‑regulated nature of VRLA.