The battery charger (1) for electric vehicles comprises a container (2), a first power unit (3) housed inside said container (2), connectable at input to an external power supply line (L) and connectable at output to a battery (B) of an electric vehicle (V), and an electronic control unit (4) housed inside the container (2) and operatively connected to the first power unit (3), and a second power unit (6) housed inside the container (2), operatively connected to the electronic control unit (4), connectable at input to at least an external power supply line (L) and connectable at output to the battery (B) of the electric vehicle (V).