A connection device for electrical connection of a vehicle to a charging cord provided with a charging socket includes a housing, a power contact disposed within the housing, and a printed circuit board mounted in the housing having a first face provided with a first metal pad which is compressed between the printed circuit board and a surface of the power contact, and a second face provided with a first temperature sensor which is arranged opposite the first metal pad. A method of electrical connection of a vehicle to a charging cord provided with a charging socket is also provided.