A portable battery operated heater powered by a battery includes a housing having an air inlet formed at a rear wall and an air outlet formed at a front wall, the housing further comprising an interiorly concave portion extending from the rear wall to the front wall, the interiorly concave portion directing a flow of air from the air inlet to the air outlet; a fan electrically connectable to the battery, the fan being disposed within the housing for creating the flow of air; and a heating element electrically connectable to the battery, the heating element being interposed between the air inlet and the air outlet in such manner that the flow of air passes over the heating element and is heated thereby.