Thermal batteries, also known as "molten salt" batteries, are used in applications where there is an immediate or sudden demand for electric power. They offer a power source that is extremely reliable and can operate at a wide range of temperatures. Furthermore, they have longer shelf lives (more than 15 years), and there is no deterioration of the active materials during storage, as the battery's electrolyte is stored in a dry state, and activated only when needed by the pyrotechnic charge. This eliminates the loss of capacity, and is the main reason missiles and torpedoes rely on thermal batteries, as they require an extremely reliable power source that can be stored or used at any point in time. Designing Safe Lithium-Ion Battery Packs Using Thermal Abuse Models_°Ù¶ÈÎÄ¿â