The PowerCore series PV storage batteries are designed with Lithium Iron (LiFePO4)battery cores which with high reliablity and longer life span. We do have ECOSTART series are with 12.8V nominated Voltage to be used in small-grid, tinny homes, RVs, Boats and other outdoor activetives to provide the energy solutions or emergency use. The 48V ECOHOME series are designed for regular home applications, the single unit is started with 2.4Kwh capacity which can be easily expanded up to 10Kwh.