The EcoFlow EF-EFDELTAPRO3EB is the Smart Extra Battery designed for the EcoFlow DELTA Pro 3 portable power station.It expands the system´s capacity, making it ideal for off-grid living, camping, and emergency backup power.Key Features:Extended Capacity:Provides 4096Wh of additional storage.Expandable Power:Supports stackable plug-and-play design for increased energy storage.Fast Charging:Can recharge up to 80% in just one hour.Smart Monitoring:View battery status, charge time, and more via the EcoFlow app.Durability:Offers 4000 charging cycles while maintaining 80% capacity.Quiet Operation:Runs at just 30 dB, ensuring minimal noise.