Method for charging an electric battery of a motor-driven vehicle by induction, from a charging device comprising: - on the one hand, a charge transmitter comprising a primary coil positioned in a parking space for a motorized vehicle, an inverter suitable for delivering to the primary winding an alternating power supply voltage; - on the other hand, a charge receiver comprising a secondary coil arranged in the vehicle positioned in the parking space; said method consisting in matching beforehand a frequency (f) of the power supply voltage of the inverter to a value substantially equal to the resonance frequency (fo) of the charging device when a motorized vehicle is located in the parking space; said method being characterized in that it then comprises the following steps: - setting a first power transmission parameter chosen from the frequency (f) of the alternating voltage of said inverter and the amplitude of said alternating voltage; - starting an iterative test consisting in: - setting a value of a second power transmission parameter, distinct from the first power transmission parameter and chosen from the frequency (f) of the alternating voltage of said inverter and the amplitude of said alternating voltage; - varying the second power transmission parameter (E, f) over an authorized adjustment range; - measuring the power (Pbat) transmitted between the charge transmitter and the charge receiver; - determining whether the power (Pbat) is equal to or greater than a pre-established operating threshold (P0bj); - if the power (Pbat) transmitted is equal to or greater than the pre-established operating threshold (P0bj) - ending the iterative test: - setting the power supply voltage of the primary coil in order to reach the measured transmitted power (Pbat), the first and second power transmission parameters (E, f) being set to their previously established value, - if the transmitted power (Pbat) is less than the pre-established operating threshold (P0bj) - determining a variation of the transmitted power (Pbat) relative to time, - if said variation of the transmitted power relative to time is positive, continuing the iterative test. - on the one hand, a charge transmitter comprising a primary coil positioned in a parking space for a motorized vehicle, an inverter suitable for delivering to the primary winding an alternating power supply voltage; - on the other hand, a charge receiver comprising a secondary coil arranged in the vehicle positioned in the parking space; - setting a first power transmission parameter chosen from the frequency (f) of the alternating voltage of said inverter and the amplitude of said alternating voltage; - starting an iterative test consisting in: - setting a value of a second power transmission parameter, distinct from the first power transmission parameter and chosen from the frequency (f) of the alternating voltage of said inverter and the amplitude of said alternating voltage; - varying the second power transmission parameter (E, f) over an authorized adjustment range; - measuring the power (Pbat) transmitted between the charge transmitter and the charge receiver; - determining whether the power (Pbat) is equal to or greater than a pre-established operating threshold (P0bj); - setting a value of a second power transmission parameter, distinct from the first power transmission parameter and chosen from the frequency (f) of the alternating voltage of said inverter and the amplitude of said alternating voltage; - varying the second power transmission parameter (E, f) over an authorized adjustment range; - measuring the power (Pbat) transmitted between the charge transmitter and the charge receiver; - determining whether the power (Pbat) is equal to or greater than a pre-established operating threshold (P0bj); - if the power (Pbat) transmitted is equal to or greater than the pre-established operating threshold (P0bj) - ending the iterative test: - setting the power supply voltage of the primary coil in order to reach the measured transmitted power (Pbat), the first and second power transmission parameters (E, f) being set to their previously established value, - ending the iterative test: - setting the power supply voltage of the primary coil in order to reach the measured transmitted power (Pbat), the first and second power transmission parameters (E, f) being set to their previously established value, - if the transmitted power (Pbat) is less than the pre-established operating threshold (P0bj) - determining a variation of the transmitted power (Pbat) relative to time, - determining a variation of the transmitted power (Pbat) relative to time, - if said variation of the transmitted power relative to time is positive, continuing the iterative test.