Power Tool

A power tool comprising:

• a motor including a stator on which a plurality of windings are wound and a rotor rotatable relative to the stator;
• an output unit driven by rotation of the rotor;
• a power source connection part connectable to an external power source serving as a driving power source of the motor, the power source connection part including:
• an AC connection terminal part connectable to an external AC power source;
• and
• a DC connection terminal part connectable to an external DC power source;
• a voltage detector configured to perform detecting a voltage of the external power source connected to the power source connection part;
• and
• a controller configured to perform changing a connection form of the plurality of windings on the basis of a voltage of the external AC power source connected to the AC connection terminal part.

A power tool comprising:

• a motor including a stator on which a plurality of windings are wound and a rotor rotatable relative to the stator;
• an output unit driven by rotation of the rotor;
• a power source connection part connectable to an external power source serving as a driving power source of the motor, the power source connection part including:
• an AC connection terminal part connectable to an external AC power source;
• and
• a DC connection terminal part connectable to an external DC power source;
• a voltage detector configured to perform detecting a voltage of the external power source connected to the power source connection part;
• and
• a controller configured to perform changing a connection form of the plurality of windings on the basis of a voltage of the external DC power source connected to the DC connection terminal part.