With the intelligent development of new energy vehicles，the number of low-voltage controllers and static power consumption have increased. The traditional management mode is facing problems such as battery depletion and redundant selection，and the extension of international transportation cycles has raised the requirements for static power consumption. The article mainly elaborates on the causes of low-voltage static power consumption during the parking period of new energy vehicles，the power consumption characteristics of the controller，and proposes optimization measures and management methods to achieve refined management，providing a basis for battery selection and meeting customer needs.