Energy storage mainly refers to the storage of electrical energy. Energy storage is also a term in petroleum reservoirs, representing the ability of reservoirs to store oil and gas. Energy storage itself is not an emerging technology, but from an industrial perspective, it is just emerging and in its infancy.

So far, China has not reached the level where the United States and Japan treat energy storage as an independent industry and introduce specialized support policies, especially in the absence of a payment mechanism for energy storage, and the commercialization model of the energy storage industry has not yet taken shape.

Lead acid batteries are generally used in high-power applications for battery energy storage, mainly for storing excess energy in emergency power sources, battery trucks, and power plants. Low power applications can also use rechargeable dry batteries, such as nickel hydrogen batteries, lithium-ion batteries, etc. This article follows the editor to learn about the advantages and disadvantages of nine types of battery energy storage.