Vrla

Encyclopedia : V : VR : VRL : Vrla

VRLA stands for valve regulated lead acid and is the designation for maintenance-free lead-acid batteries. VRLA batteries can present several technologies such as:

Absorbent glass mat battery
Gel battery

These batteries are often colloquially called sealed lead-acid batteries, but this term is not correct: a sealed battery would be a safety hazard due to overpressure risks when overcharging, and there is always a safety valve present, hence the name valve-regulated.

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