This standard specifies wireless power transmission (WPT) systems which enable quick and easy charging.

This standard is composed of two parts. In part 1, it specifies the Capacitive Coupling WPT System using 400 kHz electromagnetic waves for the purpose of electrical power charging or electrical power feeding to mobile devices. And in part 2, it specifies the Magnetic Resonance Coupling WPT System utilizing 6.78 MHz radio wave. Also, this Standard in part 2 refers to the “A4WP Wireless Power Transfer System Specification.

These systems are operated at transmission power not exceeding the limitation (up to 50W) allowed for use without permission in the “Other Equipment” category stipulated in “Article 45, Item (3) of the Regulations for Enforcement of the Radio Act” and the “Equipment Utilizing High Frequency Current” stipulated in “Article 100, Paragraph (1), Item (ii) of the Radio Act”.

Moreover, this standard is compliant with the report of Technical Requirements on Wireless Power Transmission System from the Information Communication Council of the Ministry of Internal Affairs and Communications, January 2015.