Power battery is the power source that provides power for tools. It mostly refers to the battery that provides power for electric vehicles, electric trains, electric bicycles and golf carts. Valve sealed lead-acid battery, open tubular lead-acid battery and lithium iron phosphate battery are mostly used. With the formation of the global trend of vigorously developing new energy, the global market share of the power battery field will continue to increase in the future, especially under the situation that China continues to issue supporting policies and power battery standards, the power battery field in China will continue to expand in the future. Who can master the power battery, who can dominate the fate of electric vehicles in the future.