A multi-purpose mobile power supply, comprising a bottom surface, a top surface, two opposite first side surfaces extending along a length direction of the multi-purpose mobile power supply, and two opposite second side surfaces extending along a width direction of the multi-purpose mobile power supply, further comprising:
- a first discharge interface configured to power a 3C electronic product;
- and
- a second discharge interface arranged on any one of the two opposite second side surfaces;
- wherein the second discharge interface at least comprises a first terminal, and the first terminal is configured for direct press-fitting with a corresponding terminal of an electric tool along the length direction;
- the multi-purpose mobile power supply is configured for a direct assembling and disassembling connection with the electric tool, and at least one surface of the multi-purpose mobile power supply is in a latching connection with a corresponding surface of the electric tool.