Communication method of electric tool and battery pack and electric tool

The invention discloses an electric tool and battery pack communication method and an electric tool, and the communication method comprises the steps: S1, the electric tool is connected with one of a first type of battery pack and a second type of battery pack, and an identification circuit of the electric tool is powered on; s2, the identification circuit sends a request signal to the battery pack through a third port; and S3, the identification circuit sets a waiting time, if the identification circuit receives a response signal sent by the battery pack within the waiting time, the battery pack is judged to be a first type of battery pack and the first line is controlled to work, and otherwise, the battery pack is judged to be a second type of battery pack and the second line is controlled to work. According to the communication method and the electric tool, the electric tool can be matched with two most common battery packs, and the use convenience of the electric tool is greatly improved. 本发明公开一种电动工具与电池包的