The EcoFlow DELTA Pro Smart Extra Battery adds 3600Wh of LFP battery capacity to your DELTA Pro portable power station. Connect up to 2 Smart Extra Batteries to reach a total system capacity of 10.8kWh, providing days of backup power for essential appliances during outages or off-grid situations.
Each Smart Extra Battery increases your DELTA Pro capacity by 3.6kWh. Stack two units to triple your base capacity from 3.6kWh to 10.8kWh total. The modular design allows you to scale your power storage based on your specific energy requirements, whether for home backup, RV living, or extended off-grid adventures.
Built with Lithium Iron Phosphate (LFP) chemistry, this battery delivers 6,500 cycles to 50% capacity and 3,500 cycles to 80% capacity. LFP batteries provide superior longevity, thermal stability, and safety compared to standard lithium-ion alternatives. The one-year shelf life after full charge ensures your backup power remains ready when needed.
When connected to your DELTA Pro, the Smart Extra Battery charges and discharges in unison with the main unit. Both batteries maintain equal charge levels automatically. The system supports all DELTA Pro charging methods, including 6500W MultiCharge capability for rapid recharging from multiple sources simultaneously - wall outlets, solar panels, EV charging stations, and generators.
The dedicated DC input port on the rear panel accepts 1800W fast charging from the EcoFlow Smart Generator (sold separately). This port functions independently, allowing you to charge the Smart Extra Battery even when disconnected from your DELTA Pro unit - critical during emergencies when you need maximum charging flexibility.
The front-mounted LCD screen displays real-time battery metrics: current charge percentage, input/output wattage, and estimated time remaining. For remote monitoring, the EcoFlow app provides comprehensive system data, charging history, and battery management controls from your smartphone.
At 84 pounds (38kg), the Smart Extra Battery includes integrated wheels and a telescoping handle for easy transportation. Dimensions of 25 x 11.2 x 16.4 inches allow the unit to stack cleanly with your DELTA Pro system while maintaining a compact footprint for storage in vehicles, garages, or utility rooms.
Each unit includes the DELTA Pro Smart Extra Battery, DELTA Pro Extra Battery Cable for connection to your main unit, Handle Cover for protection during transport, and comprehensive User Manual with setup instructions.
The EcoFlow DELTA Pro Smart Extra Battery will boost the energy storage capacity of the DELTA Pro portable power station. You can add up to 2 Smart Extra Batteries to expand up to 10.8kWh! The EcoFlow DELTA Pro Series the next leap in portable power technology, offering you power security and independence, wherever you are.
Make it a triple - Double or triple the capacity of your DELTA Pro to 7.2kWh or 10.8kWh. That'll give you days of power for your essential appliances.
Charge anytime, anywhere - DELTA Pro's Smart Extra Battery benefits from all the charging methods DELTA Pro has, including 6500W MultiCharge. That means you can charge anytime, anywhere as long as your extra battery is connected to DELTA Pro. Once connected, they'll charge/discharge in unison, keeping the battery percent level across both units.
Ready for any emergency - When the going gets tough and you're out of charge options, get a 1800W DC fast charge with EcoFlow Smart Generator (sold separately). Just plug the generator directly into your extra battery via the port on the back. This works even when disconnected from your DELTA Pro.
Stay informed - The Smart Extra Battery sports a bright LCD screen on the front of the unit giving you all the info you need. Output, input, remaining charge and time remaining. It's all there. Need on the go info? The EcoFlow app can tell you all that & a whole lot more.
What's included in the box - DELTA Pro Smart Extra Battery, DELTA Pro Extra Battery Cable, Handle Cover, and User Manual
Model Name - DELTA Pro Smart Extra Battery
Capacity - 3600Wh
Battery Chemistry - LFP
Battery Cycle Life - 6,500 cycles to 50% capacity, 3,500 cycles to 80% capacity
Shelf Life - 1 year (after a full charge)
Dimension - 25 x 11.2 x 16.4 in / 63.5 x 28.5 x 41.6 cm
Weight - Approx. 84lbs / 38kg
