Autonomous Underwater Vehicles (AUVs) are vehicles that are primarily used to accomplish oceanographic research data collection and auxiliary offshore tasks. At the present time. they are usually powered by lithium-ion secondary batteries. which have insufficient specific energies. https://www.aitsglobal.com/product-category/%d7%97%d7%a4%d7%a6%d7%99-%d7%90%d7%95%d7%9e%d7%a0%d7%95%d7%aa/