The patient lifting device includes a transverse beam that supports a movable lift assembly to move a patient relative to at least one of a bed or chair. The transverse beam spans between a pair of support structures and allows the lift assembly to move horizontally along the transverse beam to move the patient horizontally relative to the bed or chair. At one of the transverse beam ends, the lift assembly contacts a charging station. The charging station charges a battery, that is carried by the lift assembly, to power the lift assembly. The lift assembly is powered to move a patient vertically upward and downward. A power source is electrically coupled to the charging station to provide electrical power to charge the battery of the lift assembly through the charging station.