An electrical radiator type heating appliance, comprising: - a case housing a heater member producing a first flow of calories when an input of the heater member is powered by a direct electric voltage, - a voltage converter implanted in the case and comprising an input provided with connection elements for connecting the voltage converter to an electric power supply source and an output delivering a direct electric voltage adapted to directly or indirectly power the input of the heater member, - an electrical energy storage device operating under a direct electric current, having an input intended to be powered by a direct current and an output delivering a direct current, the electrical energy storage device comprising an electrochemical cells assembly-based battery and/or a supercapacitor and/or a fuel cell, - a management unit housed within the case and controlling at least the heater member, - first linking elements for linking the output of the voltage converter with the input of the heater member and adapted to apply the direct electric voltage delivered at the output of the voltage converter at the input of the heater member, - second linking elements for linking the output of the voltage converter with the input of the electrical energy storage device and adapted to apply the direct electric voltage delivered at the output of the voltage converter at the input of the electrical energy storage device, - third linking elements for linking the output of the electrical energy storage device with the input of the heater member and adapted to apply the direct current delivered by the output of the electrical energy storage device at the input of the heater member, - switch elements for toggling the first linking elements between an open circuit configuration or a closed circuit configuration, for toggling the second linking elements between an open circuit configuration or a closed circuit configuration, and for toggling the third linking elements between an open circuit configuration or a closed circuit configuration, - a characterization element allowing characterizing the state-of-charge of the electrical energy storage device, - transmission elements allowing addressing the value determined by the characterization element to an input of the management unit, - a measuring sensor for measuring the temperature outside the case, and - transmission elements allowing addressing the value determined by the measuring sensor to an input of the management unit; the heating appliance being characterized in that the management unit ensures a control of the switch elements according to a predetermined strategy algorithm stored in a memory of the management unit, according to the value determined by the measuring sensor and addressed to the management unit and according to the value determined by the characterization element and addressed to the management unit. - a case housing a heater member producing a first flow of calories when an input of the heater member is powered by a direct electric voltage, - a voltage converter implanted in the case and comprising an input provided with connection elements for connecting the voltage converter to an electric power supply source and an output delivering a direct electric voltage adapted to directly or indirectly power the input of the heater member, - an electrical energy storage device operating under a direct electric current, having an input intended to be powered by a direct current and an output delivering a direct current, the electrical energy storage device comprising an electrochemical cells assembly-based battery and/or a supercapacitor and/or a fuel cell, - a management unit housed within the case and controlling at least the heater member, - first linking elements for linking the output of the voltage converter with the input of the heater member and adapted to apply the direct electric voltage delivered at the output of the voltage converter at the input of the heater member, - second linking elements for linking the output of the voltage converter with the input of the electrical energy storage device and adapted to apply the direct electric voltage delivered at the output of the voltage converter at the input of the electrical energy storage device, - third linking elements for linking the output of the electrical energy storage device with the input of the heater member and adapted to apply the direct current delivered by the output of the electrical energy storage device at the input of the heater member, - switch elements for toggling the first linking elements between an open circuit configuration or a closed circuit configuration, for toggling the second linking elements between an open circuit configuration or a closed circuit configuration, and for toggling the third linking elements between an open circuit configuration or a closed circuit configuration, - a characterization element allowing characterizing the state-of-charge of the electrical energy storage device, - transmission elements allowing addressing the value determined by the characterization element to an input of the management unit, - a measuring sensor for measuring the temperature outside the case, and - transmission elements allowing addressing the value determined by the measuring sensor to an input of the management unit;