The EcoFlow DELTA Pro 3 Smart Extra Battery delivers 4kWh of expandable capacity to power your home during outages and off-grid situations. Designed as an expansion unit for the EcoFlow DELTA Pro 3 system, this battery scales your power capacity up to 12kWh total.
Compatibility: Works with EcoFlow DELTA Pro 3 and EcoFlow DELTA Pro systems. Direct plug-and-play connection ensures compatibility across both models.
Capacity and Expandability: 4kWh base capacity per unit, expandable to 12kWh total when multiple batteries are connected. Configure your system based on actual power requirements for home appliances and backup needs.
LFP Battery Technology: Lithium Iron Phosphate (LFP) chemistry provides 4000 cycles to 80% capacity retention. This translates to over 10 years of daily use before reaching 80% of original capacity.
Installation: Plug-and-play design requires no professional installation. Connect the extra battery to your DELTA Pro 3 unit using the included EcoFlow Extra Battery Cable and begin operation immediately.
Stackable Configuration: Designed for indoor installation with stackable form factor. Multiple units can be arranged vertically to maximize floor space efficiency in utility rooms, garages, or dedicated backup power areas.
This expansion battery suits homes requiring extended backup power duration, off-grid cabins needing multi-day autonomy, and properties with high daily energy consumption. The 4kWh capacity per unit supports refrigerators, HVAC systems, well pumps, and essential electronics during grid failures.
