The EcoFlow EF-ZMR330EB is an extra battery designed for the EcoFlow DELTA 2 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:Increases total storage to 2048Wh, ensuring longer runtimes.Simultaneous Charging:Charges alongside the DELTA 2, using solar panels, AC outlets, or EcoFlow´s Smart Generator.Fast Charging:Can recharge from 0% to 80% in minutes.Smart Monitoring:View battery status, charge time, and more via the EcoFlow app.Compact & Portable:Designed for easy transport and storage.