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EcoFlow Delta Pro 3 Smart Extra Battery

 

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EcoFlow
Part no EFDELTAPRO3EB
Ascent part no 816969
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A plug-and-play smart expansion battery designed to increase the usable capacity of the EcoFlow DELTA Pro 3 portable power station. It is intended to integrate with the DELTA Pro 3 system to provide longer runtime for home backup, off-grid use, and portable power applications. Public listings describe it as a 4096Wh LFP expansion battery with support for up to 12kWh with one additional unit and up to 36kWh with multiple units in the DELTA Pro 3 ecosystem. It uses a dedicated extra battery port and is built for stackable installation in horizontal or vertical orientation.

Technical Specifications

Product NameEcoFlow DELTA Pro 3 Smart Extra Battery
ManufacturerEcoFlow
Model NumberEFDELTAPRO3EB
Product LineDELTA Pro 3
Product CategoryBatteries
Battery
Battery Capacity4096Wh
Battery ChemistryLFP
Cycle Life4000 cycles to 80% capacity
Connectivity
Connection Port1 x Extra Battery Port
Input Port40V-58.4V, 80A Max
Output Port40V-58.4V, 100A Max
Physical
ColourSilver
DimensionsApprox. 694mm x 295mm x 215mm
WeightApprox. 33kg
Stack OrientationHorizontal or Vertical
Environmental
Discharge Temperature-10°C to 45°C
Charge Temperature0°C to 45°C
Storage Temperature-10°C to 45°C
System
Expandable CapacityUp to 12kWh with 2 x DELTA Pro 3 Extra Battery units
System ScalabilityUp to 36kWh with 6 x DELTA Pro 3 Extra Battery units

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EcoFlow
Part no EFDELTAPRO3EB
Ascent part no 816969
  • Free NZ deliveryNo hidden fees
  • 100% Kiwi owned34 years in business
  • Net Promoter Score 94Rated by our customers
Questions? (04) 802 3890


"Great service and speedy dispatch and delivery :)" Daniel, 30 September 2026
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