EVC Group s.r.o., an established development and manufacturing company in the field of lithium battery systems, today, together with the main supplier of the power part and control system, Siemens, s.r.o., presented an industrial battery storage (hereinafter referred to as "BSAE" - battery system of electric energy storage). The main advantage of the cooperation between the two companies is the combination of EVC's experience in using different types of capacities and chemistries of lithium cells and Siemens' versatile converters.