Abstract: A 12-Volt Heated Coffee Mug is designed for the holding and drinking of hot beverages. The cup, with lid and handle, sits in a matching base with heating elements powered by 12 volts DC as provided by a motor vehicle to maintain the hot temperature of the liquid. The matching base assures not only a tight coupling to prevent the cup from tipping over while driving, but also to insure that good heat transfer will occur from the heating coils to the liquid. The matching base has a wide base to provide stability on a horizontal surface while traveling in a motor vehicle.