sealed lead battery
A sealed lead battery, also known as a valve-regulated lead-acid (VRLA) battery, represents a significant advancement in energy storage technology. This maintenance-free power solution utilizes a unique design where the electrolyte is immobilized, either in gel form or absorbed in special glass mat separators. Unlike traditional flooded lead-acid batteries, sealed lead batteries are completely sealed and feature a pressure regulation valve system that prevents gas escape while maintaining internal pressure at safe levels. The battery operates through a recombination process where oxygen and hydrogen produced during charging reunite to form water, eliminating the need for water replenishment. These batteries typically provide voltages ranging from 2V to 12V and capacities from 1Ah to several thousand Ah, making them versatile for various applications. Their sealed construction allows for installation in any orientation, except inverted, and they perform reliably in temperatures ranging from -20°C to 50°C. Common applications include uninterruptible power supplies (UPS), emergency lighting systems, solar energy storage, telecommunications equipment, and various portable electronic devices. The technology's reliability and low maintenance requirements have made it a preferred choice in both industrial and consumer applications.