During the charging process, the charger may start its own protection mechanism and automatically shut down to avoid damage due to overheating or battery damage. In addition, the charging treasure has a long service life, which may also cause problems due to aging. It is recommended to choose a safe charging method during use to avoid frequent charging of the charging bank in a short period of time, and pay attention to regular inspection and maintenance of the charging bank to extend the service life and avoid safety hazards.