An electrical connection system comprising: - an electrical appliance having a first connection system, - an electrical charger having a second connection system, the first and second connection systems being matable with one another to transfer electricity from the charger to the appliance, wherein the first connection system comprises: - a housing comprising a rigid external wall surrounding an inner region in which at least one receptacle is defined, the housing having a front region shaped to mate with the second connection system without intervention of a deformable seal, - an electrical cable comprising an external insulating sheath and at least one electrical wire, wherein the insulating sheath has an outer surface, wherein each electrical wire comprises an electrical core, and a terminal attached to the electrical core and mounted in a respective receptacle of the housing, characterized in that a peripheral sealing barrier extends from the external wall at the front region of the housing to said outer surface (21, 40) of the external insulating sheath, in that the housing comprises a front part having said front region, and a rear cover assembled to said front part, said rear cover comprising a front opening through which said terminal extends, and a rear opening, through which said insulating sheath extends, said system further comprising a rear seal compressed between the front part and the rear cover of the housing, wherein said system further comprises an elastomeric sheath extending longitudinally from the outer surface of the insulating sheath of the electrical cable to the rear cover of the housing, and sealingly assembled to the rear opening of the rear cover, in that said peripheral sealing barrier comprises said external wall, said rear seal, an external wall of said rear part and said elastomeric sheath contacting and surrounding said external wall of the rear cover. - an electrical appliance having a first connection system, - an electrical charger having a second connection system, the first and second connection systems being matable with one another to transfer electricity from the charger to the appliance, wherein the first connection system comprises: - a housing comprising a rigid external wall surrounding an inner region in which at least one receptacle is defined, the housing having a front region shaped to mate with the second connection system without intervention of a deformable seal, - an electrical cable comprising an external insulating sheath and at least one electrical wire, wherein the insulating sheath has an outer surface, wherein each electrical wire comprises an electrical core, and a terminal attached to the electrical core and mounted in a respective receptacle of the housing, characterized in that a peripheral sealing barrier extends from the external wall at the front region of the housing to said outer surface (21, 40) of the external insulating sheath, in that the housing comprises a front part having said front region, and a rear cover assembled to said front part, said rear cover comprising a front opening through which said terminal extends, and a rear opening, through which said insulating sheath extends, said system further comprising a rear seal compressed between the front part and the rear cover of the housing, wherein said system further comprises an elastomeric sheath extending longitudinally from the outer surface of the insulating sheath of the electrical cable to the rear cover of the housing, and sealingly assembled to the rear opening of the rear cover, in that said peripheral sealing barrier comprises said external wall, said rear seal, an external wall of said rear part and said elastomeric sheath contacting and surrounding said external wall of the rear cover.