Electric torque wrench

An electric torque wrench comprising:

• a ratchet head unit;
• a wrench body unit connected to said ratchet head unit, and having a rear end that is opposite to said ratchet head unit along a first axis;
• a drive output unit including a ratchet head driver that is mounted on said ratchet head unit, that extends along a second axis transverse to the first axis, and that is configured to rotate in a selected direction and output rotational energy;
• an electric motor unit mounted in said wrench body unit, and including an electric motor that is configured to drive rotation of said ratchet head driver in the selected direction, said electric motor and said rear end cooperatively defining an accommodation space that extends along the first axis;
• a strain sensor unit mounted in said wrench body unit, extending in said accommodation space, and configured to output a torque reading of an external force that acts on said wrench body unit;
• and
• a control unit mounted in said wrench body unit, and including a display module that is for displaying the torque reading outputted by said strain sensor unit, a control module that is signally connected to said electric motor unit, said strain sensor unit, and said display module, and a battery module that is electrically connected to said control module, and that is for providing electric energy to said electric motor unit and said display module, said strain sensor unit being located between said electric motor and said battery module.