This EcoFlow DELTA Pro 3 Smart Extra Battery is a 4096Wh battery designed to expand the capacity of your EcoFlow DELTA Pro 3 Portable power station. It offers scalable power, expandable up to 12kWh for increased capacity. Featuring a long-lasting LFP battery with 4000 life cycles to 80% capacity, it is easy to use with its plug-and-play design for straightforward operation. The stackable design makes it perfect for home or indoor power backup applications. It works seamlessly with the EcoFlow DELTA Pro 3.