As the earliest used rechargeable battery, lead-acid battery has a history of nearly 140 years. It has the advantages of low energy density, high current discharge, and low cost. It has the disadvantages of large volume and heavy weight in the same capacity, but it still has a large market share.

VRLA(Valve-regulated Lead-Acid Battery), Named Maintenance Free battery, Sealed battery also, include two major series of AGM(Absorbed Glass-Mat) and GEL(Gelled electrolytes), are widely used in automobile starting, electric ships, electric wheelchairs, golf carts, light electric tricycles, electric ATVs, electric bicycles, electric motorcycles, medical instruments, industrial instruments, UPS storage Energy, solar and wind energy storage and other fields.

Because it contains heavy metal lead, lead is also used in the production process, which is likely to cause environmental pollution. In developed countries such as the United States and Europe, production has been banned, and production has been restricted in China. In order to protect the natural environment, the Chinese government does not encourage the production of lead acid Batteries.

With the improvement of lithium battery technology and the decline in commercial costs, lead-acid batteries will gradually be replaced by lithium batteries in the future. At present, due to cost reasons, there are still many fields and some countries and regions that will continue to use lead-acid batteries.