Method for controlling a charging device and charging device

A method for controlling a charging device (10) transferring energy to an electrical load of an inductively coupled household appliance (20), a circuitry of said charging device (10) comprising

• an oscillator circuit (1) having at least one output power coil element (2, L1) and at least one capacitor element (C1, C2);
• an electrical power source;
• a power switching element (7, T1) feeding the oscillator circuit with electrical power;
• a sensor element (6) for determining an electrical signal value indicative of the inductance of the oscillator circuit (1);
• a microprocessor (4, uC) configured to adapt the electrical energy provided by the oscillator circuit dependent on a comparison of the measured electrical signal with a threshold;
• wherein the method comprises steps of:
• activating a threshold determining mode of the microprocessor (4, uC) starting upon the proximate powering up of the microprocessor;
• and
• in the threshold determining mode of the microprocessor (4, uC), determining the threshold automatically after the proximate powering up of the microprocessor (4, uC).