How do valve regulated lead acid batteries work?

Discover the working principle of Valve Regulated Lead Acid (VRLA) batteries: Basic Operation: VRLA batteries operate on the principle of electrolysis. Within the sealed battery, two lead plates immersed in a sulfuric acid solution facilitate a chemical reaction. One plate is coated with lead dioxide, while the other is made of spongy lead.

What is valve regulated lead acid (VRLA) battery?

The Valve Regulated Lead Acid (VRLA) Battery is a type of rechargeable lead-acid battery. It is a fully maintenance-free and complete sealed battery. They are also commonly known as Sealed Battery (SLA). Injection of water or electrolyte not required for this type of battery.

Are valve regulated batteries dangerous?

Although all valve-regulated batteries have the electrolyte immobilized within the cell, the electrical hazard associated with batteries still exists. Work performed on these batteries should be done with the tools and the protective equipment listed below.

How do you charge a lead acid battery?

The basic requirement to charge a lead acid battery is to have a DC current source of a voltage higher than the open circuit voltage of the battery to be charged. Figure 3 illustrates the basic concept of charging.

Can VRLA batteries be substituted for flooded lead-acid batteries?

VRLA batteries can be substituted in virtually any flooded lead-acid battery application (in conjunction with well-regulated charging), as well as applications where traditional flooded batteries cannot be used. Because of their unique features and benefits, VRLA batteries are particularly well suited for:

Is a lead acid battery a secondary battery?

A lead-acid battery is a secondary battery. SEPARATOR — A porous divider between the positive and neg- ative plates in a cell that allows the flow of ionic current to pass through it, but not electronic current. Separators are made from numerous materials such as: polyethylene, polyvinyl chloride, rubber, glass fiber, cellulose, etc.