Sealed lead-acid batteries, also known as valve-regulated lead-acid (VRLA) batteries, are a newer type of lead-acid battery. They have a sealed case, which prevents the electrolyte from leaking or spilling. There are two types of sealed lead-acid batteries: absorbed glass mat (AGM) and gel batteries.
To fill a lead-acid battery during its formation process, first, fill the battery case with sulfuric acid solution. This can be done manually using a filling device or automatically with a machine that ensures a precise amount of electrolyte is added each time.
Flooded lead-acid batteries, also known as wet-cell batteries, are the oldest and most common type of lead-acid battery. They have a liquid electrolyte that is free to move around the battery’s plates. The electrolyte is typically a mixture of sulfuric acid and water.
Here’s how the different types compare: Flooded Lead-Acid Battery: High capacity, low voltage, and can handle high discharge rates. However, they require regular maintenance and can leak if not properly maintained. Sealed Lead-Acid Battery: Lower capacity and higher voltage than flooded batteries. They are also maintenance-free and leak-proof.
A lead-acid battery consists of lead plates, lead oxide, and a sulfuric acid and water solution called electrolyte. The plates are placed in the electrolyte, and when a chemical reaction is initiated, a current flows from the lead oxide to the lead plates. This creates an electrical charge that can be used to power various devices.
On the other hand, the high weight can also be put to good use: for example, as a counterweight for machines that have to transport heavy loads. Lead batteries are now available in different types: lead-gel batteries, lead-fleece batteries and pure lead batteries. The differences are mainly due to the material used as electrolyte.