Electronic cardiac pacemaker for implantation in a body of a living being and for controlling a heartbeat of a heart of a living being, wherein the pacemaker comprises: an electrode portion comprising at least one electrode; an electronic assembly connected with the electrode portion, configured to a. monitor the heartbeat of the heart to acquire body data, wherein the electronic assembly is able, through the body data, to determine whether the heartbeat needs to be controlled, b. to generate an impulse, in particular a voltage impulse, if required, and c. to emit the same via the electrode portion to the heart of the living being to control the heartbeat; an energy storage to supply the electronics assembly with electrical energy, which can be recharged with electrical energy after discharge, wherein the energy storage is an accumulator; and a charging impulse generation portion electrically connected with the energy storage, which is configured to emit a charging impulse to the energy storage for the recharging of the energy storage, wherein the charging impulse generation portion comprises a magnetization portion with oriented magnetic domains, which can be contact-lessly influenced by an external magnetic field reversing with a reversing frequency, so that, when a certain field strength is reached, a remagnetization wave, caused by the continuously reversing magnetic domains, occurs in the magnetization portion which runs across the magnetization portion and leads to the generation of the charging impulse; wherein said electronic assembly together with said energy storage and said charging impulse generation portion are completely surrounded by a housing formed of a material which is not repelled by the body of the living being, and said at least one electrode is formed on an outer surface of said housing, the cardiac pacemaker is implanted, as intended, into the heart or attached to an external surface of the heart, and the electrode formed on the external surface is brought into contact with and/or anchored to the heart as intended, and the accumulator is to be charged as intended by generating the external magnetic field. an electrode portion comprising at least one electrode; an electronic assembly connected with the electrode portion, configured to a. monitor the heartbeat of the heart to acquire body data, wherein the electronic assembly is able, through the body data, to determine whether the heartbeat needs to be controlled, b. to generate an impulse, in particular a voltage impulse, if required, and c. to emit the same via the electrode portion to the heart of the living being to control the heartbeat; a. monitor the heartbeat of the heart to acquire body data, wherein the electronic assembly is able, through the body data, to determine whether the heartbeat needs to be controlled, b. to generate an impulse, in particular a voltage impulse, if required, and c. to emit the same via the electrode portion to the heart of the living being to control the heartbeat; an energy storage to supply the electronics assembly with electrical energy, which can be recharged with electrical energy after discharge, wherein the energy storage is an accumulator; and a charging impulse generation portion electrically connected with the energy storage, which is configured to emit a charging impulse to the energy storage for the recharging of the energy storage, wherein the charging impulse generation portion comprises a magnetization portion with oriented magnetic domains, which can be contact-lessly influenced by an external magnetic field reversing with a reversing frequency, so that, when a certain field strength is reached, a remagnetization wave, caused by the continuously reversing magnetic domains, occurs in the magnetization portion which runs across the magnetization portion and leads to the generation of the charging impulse; wherein said electronic assembly together with said energy storage and said charging impulse generation portion are completely surrounded by a housing formed of a material which is not repelled by the body of the living being, and said at least one electrode is formed on an outer surface of said housing, the cardiac pacemaker is implanted, as intended, into the heart or attached to an external surface of the heart, and the electrode formed on the external surface is brought into contact with and/or anchored to the heart as intended, and the accumulator is to be charged as intended by generating the external magnetic field.