Sealed lead-acid batteries
VRLA batteries are sealed lead acid batteries. He was born in the century, 20th, 70 years to 1975 in some developed countries have formed a considerable scale of production, and soon formed a large number of industrial and market. When the battery is also a lead-acid batteries, but it is compared with the original lead-acid battery has many advantages in selling user welcomed, especially those who need to complete installation with the battery (or workstation) users prefer, such as UPS, telecom equipment, communications equipment, mobile computers, motorcycles and so on. Because VRLA batteries are completely sealed and does not leak acid, but also in the charge and discharge will not be like the old-fashioned lead-acid batteries, as there will be fog was released , while the corrosive pollution of the environment, so that people from the structural characteristics of the VRLA battery is also known as closed (sealed) lead acid batteries. To distinguish the old-fashioned lead-acid battery is called the opening lead-acid batteries. Since VRLA batteries from a structural standpoint, it is not only a completely air tight, but there is a battery of internal gas pressure can control the valve so that the full name of VRLA lead-acid batteries became a “valve-sealed lead-acid batteries.
