Used EV batteries turned into solar energy storage units for homes

German company Voltfang is repurposing used electric vehicle (EV) batteries into compact, fridge-sized energy storage units designed to store excess solar and wind energy for homes and businesses. These systems, named Voltfang 2 and Voltfang 2 Indoor, utilize high-performance, requalified battery modules sourced from the European automotive industry. Before reuse, technicians thoroughly test the batteries to assess their remaining lifespan, ensuring only suitable cells are integrated. The resulting storage units act as large power banks, enabling users to feed electricity back into the grid when needed, thereby enhancing energy security and supporting a more resilient, climate-friendly energy infrastructure. Voltfang’s industrial battery storage solutions particularly benefit companies with high energy demands, such as manufacturing, agriculture, office complexes, and EV charging parks. These systems help reduce reliance on external energy suppliers, lower carbon footprints, and optimize energy efficiency. The company recommends pairing the storage units with photovoltaic (PV) systems to maximize surplus energy storage but notes that even without PV