An improved warning light blinker includes an upper housing member including an integral pedestal extending from an upper surface thereof, the upper housing member being transparent, the upper housing member also including an opening in a lower portion thereof. A lower housing member mates within the upper housing member through the opening. Battery captivating members for captivating a battery so as to substantially eliminate free air from contacting a substantial portion of a battery's outer surface area is provided. A flasher circuit periodically supplies electrical energy to a light bulb. A light dispersing lens is coupled to the pedestal. In the preferred apparatus one or more solar rechargeable batteries are situated within the battery captivating members. The pedestal includes a tapered channel which narrows close to an upper end thereof and a light bulb socket engages in an interference fit near the upper end. The upper housing member includes an upper surface and the upper surface is sloped downward to allow rapid drainage of rain water to enhance the solar efficiency of the solar rechargeable batteries.