From 1990 Sony's lithium-ion battery appeared, with the continuous acceleration of scientific and technological development, lithium-ion battery technology has been developed accordingly, lithium iron phosphate batteries also came into being. Lithium phosphate battery alternative to lead-acid batteries and technology has been relatively mature, most applications of lead-acid batteries can be replaced with lithium iron phosphate. Compared with traditional lithium batteries, it has more security, no memory effect, high operating voltage, long cycle life, high energy density, easier maintenance and other obvious advantages, mainly used in power batteries and energy storage batteries, but also widely used in communications and power grid construction.With the gradual deepening of the global energy crisis and the increasing pursuit of environmental protection, the lithium battery industry as new energy and environmental protection is also developing rapidly. A unique performance makes it the mainstream of the battery. The future will also show a rapid growth trend in the 5G field, and there will be new market opportunities.