Once the traditional connection method is interfered by the conductive medium, it will produce leakage and discharge effects, which will consume a part of the electric energy. Since the insulation connection will not be disturbed by the conductive medium, there will be no loss of electrical energy. For example, a battery using insulated and connected technology will not produce an electrolysis effect even if it is used underwater, thereby achieving storage and energy saving. Such battery technology is urgently needed in the fields of new energy vehicles, charging piles, and electric bicycles. The application of subsea energy stations and subsea charging piles has broad prospects.