Abstract: An intelligentized high-frequency charger for batteries includes a monolithic processor control circuit, a charging control circuit and a detection circuit electrically connected to the said monolithic processor control circuit respectively. The said monolithic processor control circuit includes a monolithic processor, an auxiliary power supply circuit and a key display circuit electrically connected to the said monolithic processor respectively. The said charging control circuit includes a PWM circuit, a drive circuit, a rectifier and filter circuit, an output control circuit and a current sampling circuit. The detection circuit includes a cell detection circuit, a reverse connection detection circuit, a cell voltage detection circuit and an auto pole circuit.