Hybrid Battery Bank Application in Energy Storage System

This paper deals with the concept of a hybrid battery bank consisting of lithium and lead acid batteries. Lithium batteries offer various benefits and advantages over lead acid batteries however up-front cost is a significant difference. By using both types at the same time, the advantages of lead-acid and lithium batteries can be used at the same time. Lithium and lead acid batteries charging characteristics and discharge curves are different, also the technological voltage levels and the desirable depth of discharge rates are also different. This article shows in a practical manner, how to manage both when they are physically connected together, also following by some considerations of optimization possibilities.