The English name of valve-regulated lead-acid battery is Valve Regulated Lead Battery (referred to as VRLA battery).

Its basic feature is that there is no need to add acid and water for maintenance during use. The battery is a sealed structure, which will not leak acid or discharge acid mist. There is a one-way exhaust valve (also called a safety valve) on the battery cover. The function of this valve When the amount of gas inside the battery exceeds a certain value (usually expressed by air pressure), that is, when the air pressure inside the battery rises to a certain value, the exhaust valve automatically opens to discharge the gas, and then automatically closes the valve to prevent air from entering the battery.

The traditional fixed lead-acid battery is about 500~600 times, and the starter type lead-acid battery is about 300~500 times. The cycle life of the valve-regulated sealed lead-acid battery is 1000~1200 times.

The first factor that affects the cycle life is the performance of the manufacturer's products, and the second is the quality of maintenance work. The service life of fixed lead batteries can also be measured by floating charge life (years). Valve-regulated sealed lead-acid batteries have a floating charge life of more than 10 years.

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