DESCRIZIONE
The invention provides an electric hot water warmer including a sealed warmer body, a heating unit and a power unit. A liquid medium for transmitting heat is filled in a sealed cavity inside the sealed warmer body. The total volume of the liquid medium when expanding or vaporized under predetermined temperature corresponds to the normal volume of the liquid medium under room temperature. The heating unit is disposed in the sealed cavity and immersed in the liquid medium. The power unit is sealingly connected with the sealed warmer body. A part of the power unit is exposed in the exterior of the sealed warmer body, and another part thereof is sealed in the sealed cavity of the sealed warmer body. The power unit is electrically connected with the heating unit. The invention further provides a heating device includes aforementioned electric hot water warmer and a charging rack. The charging rack includes a base, a connecting table, a protection device, a charging arm and a power line. The invention has advantages of convenient carry, safety and reliability, and comfort and practicality.