Drones’ technology has become forefront in the industry development sector. It has been used in many applications such as forest fire monitoring, border security surveillance and delivery application. However, drone flights are limited to only a few minutes also high current consumption by drone’s motors resulting in requiring batteries with high capacity. This represents a challenge for the drones to efficiently serve their purpose, researchers show more interest in developing a drone wireless charging method for longer flight duration. Many factors are to be considered such as power transfer efficiency, number of transmitter coils, frequency range and transfer distance; all these factors have been reviewed in this research. This paper aims to investigate and review the methods of wireless power transfer (WPT) and its capability to charge a drone’s battery at all sizes. WPT is divided into three main types which are capacitive wireless power transfer (CWPT), radiative and non-ra