Nowadays an increasingly efficient and optimal use of electrical energy storage systems plays an important role in the main international scientific and industrial lines of action: there is a need to gradually move away from the use of fossil fuels in order to ensure an improvement in the life quality, with a consequent increasing demand for self-sufficient and energy-efficient systems. Despite extensive literature and a large number of patents filed, the number of products on the market adopting such technologies is limited. BAT-MAN project aims to bring significant innovations in the development of applications based on a new estimation and diagnostic techniques, not only in the field of storage systems.