Provided is an in-vehicle charger preventing decrease in reliability of vehicle control. An in-vehicle charger comprises: a charging coil (12) mounted in a vehicle equipped with a communication device; and a control unit (6a) connected to the charging coil (12), and the control unit (6a) is configured to detect a vehicle driving state by detecting an engine operation state of the vehicle or on the basis of a parking brake release output of the vehicle. This prevents electromagnetic wave emitted from the charging coil from affecting wireless communication performed between the remote control key and a transceiver unit of the vehicle.
