Auto Wireless Billing is an easy and quick way to charge an electric or plug-in hybrid car. The car will be able to use wireless charging at any time, without having to connect to it. In extreme cold weather, the electric vehicles (EVs) will probably be buried in the snow and ice and will not be usable. But the wireless billing technique is able to satisfy the demand of all kinds of weather. Aside from recharging during idle mode, wireless charging also offers a potential for dynamic charging - enabling the car to be recharged as it travels. Once this technique is developed, it will be able to solve the problem of EV's running range. Therefore, it is possible to lower the load of EV, lower the cost of EV, and increase the quantity of EV. In this paper, various wireless charging technologies for EV are discussed and analyzed. Also, the optimization strategies will be given as future perspectives.