An electric construction machine is provided that can travel from a work location to a charging location, and can suppress deterioration of work efficiency.
The electric hydraulic excavator includes: a battery device (19); an electric motor (28) that is driven by power of the battery device (19); a hydraulic pump (29) that is driven by the electric motor (28); a travelling hydraulic motor (7) and a work hydraulic actuator that are driven by a hydraulic fluid delivered from the hydraulic pump (29); a controller (37); and a display device (24). The controller (37) computes an operable time by dividing power storage amount of the battery device (19) by average power consumption per unit time during driving of the electric motor (28); computes a travelable time by dividing the power storage amount of the battery device (19) by average power consumption per unit time during driving of the electric motor (28) and the travelling hydraulic motor (7); and causes the computed operable time and the computed travelable time to be displayed on the display device (24).