Electromagnetic charging device and the use thereof

An electromagnetic charging device and the use thereof are disclosed. The device comprises: a wireless RF receiving unit, a converting circuit, and a power storage unit. The RF receiving unit is used to receive the electromagnetic wave in the air, while the converting circuit is used to convert the electromagnetic wave into electrical energy and the power storage unit is used to store the electrical energy. This device is applied specifically to wireless communication in general (or wireless discharge) and is able to recycle the lost energy during converting energy between the transmitting end and the receiving end so as to use the recycled energy to charge the electronic products that are compactable, therefore, energy recycling and reuse can be achieved.