Power lithium battery packaging has entered the field of vision of various industries with its excellent comprehensive performance, and has also entered the era of lithium batteries, which are much better than nickel-cadmium batteries. Comprehensively promote the coordinated development of lithium batteries, and the influence will be improved. The operation of each device requires backup power. Provides low voltage power to various system components. Compared with the existing nickel-cadmium batteries, lithium batteries have great advantages in terms of environmental performance, technical performance and ease of use.