The special lithium battery for tethered boat (Changsha), tethered airship with a unique aerodynamic shape airship as the air platform, combined with tethered cable, environmental control, emergency system, communication system, mooring station or mooring security vehicle, traction system, power system and other components. Among them, the emergency power supply system is for the environmental application characteristics of the tethered boat, research and development production for alpine, low-pressure and other climatic environment as the main breakthrough image of a permanent power supply system.