The BC500-R is a stand alone battery powered strobe light with a rechargeable battery and wall plug charger. It includes a 9 amp hour battery and will run approximately 24 hours between charges. The battery is contained in a powder painted black steel box with a hinged lid. The strobe is a single flash 12V strobe light. These lights are made to order. Please allow 10 business days after you place your order for your order to ship.