Provided is an ultrasonic diagnostic apparatus having a source power supplied from an external power supplier, and the ultrasonic diagnostic apparatus includes: a smoother that smoothens a source power which is supplied from the external power supplier having an external battery and on which a signal of battery information showing a state of the external battery is superimposed； a power supply that supplies the smoothened source power to each component within the ultrasonic diagnostic apparatus； a signal extractor that extracts the signal of the battery information from the source power supplied from the external power supplier； a converter that converts the extracted signal to the battery information； and a first hardware processor that performs control according to the converted battery information.
