This chapter deals with the applications of quantum computing in various fields. The applications include estimation of state of charge of batteries for electric vehicles, Kalman filter-based SoC estimation methods, developing multi-drone communication with the flying ad hoc network (FANET), degradation mechanism analysis of crystal cathode materials using machine learning, state-of-charge estimation of Lithium-ion batteries using a long short-term memory deep learning method, electrode design of multivalent metal-ion batteries, aircraft hybrid-electric propulsion, heterogeneous wireless sensor networks for obtaining a variety of sensing data sources, optimization of energy consumption in wireless sensor networks and smart home remote control security systems.