The electric energy of the battery is stored in the device, which can be converted into electric energy, and the chemical energy is stored, and then the chemical energy is converted into electric energy when necessary. Battery is one of the important driving forces of automobile, and its technical performance directly affects the performance and transportation cost of automobile. Proper use and maintenance of battery is a skill that drivers and technicians must master. This paper mainly carries out daily maintenance and maintenance from the aspects of correct use of batteries, regular inspection items, troubleshooting and methods to extend the service life of batteries.

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