VRLA battery is VRLA batteries. English full name: Valve Regulated Lead Acid Battery It was born in the 1970s, until 1975 when, in some developed countries have formed a considerable scale of production, and soon formed the industrialization and mass market. While the battery is lead-acid batteries, but it is compared with the original lead-acid battery has many advantages, but much users, especially those who need the battery equipment mounted together (or a workstation) user favor , such as UPS, telecommunications equipment, mobile communications equipment, computers and motorcycles. This is because VRLA batteries are sealed and will not leak acid, and during charging and discharging is not like the old-fashioned lead-acid batteries that will be put out of the mist and corrosion of equipment, pollute the environment, so people from the structural characteristics of the VRLA battery also known as a closed (sealed) lead-acid batteries. In order to distinguish between the old-fashioned lead-acid battery called the opening lead-acid batteries. Because VRLA battery from the structural point of view, it is not only sealed, but there is a gas pressure inside the battery can control a valve, so the full name of VRLA lead-acid battery has become "valve-sealed lead-acid battery" Product life long, high energy, high energy ratio, no cadmium environmentally friendly, low self-discharge, can be widely used in deep discharge:. EPS emergency power, UPS uninterruptible power supply, solar / wind energy storage, anti-theft alarm system, electric bicycles, electric tools , children's toys, electric power, telecommunications, banking, financial and securities system standby power supplies.