Charging method and device and storage medium

The invention discloses a charging method and device and a storage medium, and the method comprises the steps: determining a charging state according to the current battery state of a battery, carrying out the charging in a corresponding charging mode, and monitoring the real-time voltage and real-time current of the battery at the same time. Wherein different charging states correspond to different charging modes, in the current charging mode, constant-current and constant-voltage charging is carried out on the battery based on the corresponding charging voltage and charging current, and the current charging mode is ended until the real-time voltage rises to the corresponding rated voltage and the real-time current drops to the corresponding rated current. And the charging voltage and the charging current are switched to continue charging until the charging is finished. According to the technical scheme provided by the invention, the technical problem that the charging effect is relatively poor due to a curr