The Fronius Reserva is a modular, high-voltage DC solar battery system designed to seamlessly integrate with Fronius GEN24 Plus and Verto Plus Hybrid inverters for backup power and increased energy independence. Featuring efficient DC coupling, LFP (lithium iron phosphate) chemistry, a slim design, and scalability up to 63 kWh by stacking towers, with a 10-year performance warranty and European data security.