A portable charging case configured to contain and charge an electronic vaping device or a battery thereof is provided. The portable charging case includes a body, a cover hingedly connected to the body at a hinge axle, and a hinge assembly. The hinge assembly includes a biasing component including a pin having an integrally formed straight first end portion and a curved second end portion. The biasing component also includes a spring arranged about the straight first end portion of the pin. The pin extends through an opening in a housing, such that the spring presses against a bottom surface of the housing and against a base of the curved second end portion of the pin.