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EcoFlow Delta3 Max Plus Extra Battery

 

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EcoFlow
Part no DELTA 3 Max Plus EB
Ascent part no 816923
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The EcoFlow DELTA 3 Max Plus Smart Extra Battery is a stackable LFP expansion battery designed to increase the storage capacity of the DELTA 3 Max Plus portable power station, and it is also listed as compatible with the DELTA 3 Ultra Plus. It provides plug-and-play expansion, supports indoor backup use, and is intended for home backup, RV use, outdoor activities, and general portable energy storage. The product is sold as a 2048Wh battery with a 5-year warranty on the EcoFlow US product page.

Technical Specifications

Product NameEcoFlow DELTA 3 Max Plus Smart Extra Battery
ManufacturerEcoFlow
Model NumberDELTA 3 Max Plus EB
Product LineDELTA 3 Max Plus
Product CategoryBatteries
Battery
Battery Capacity2048Wh
Rated Capacity2048Wh (51.2V 40Ah)
Cell ChemistryLFP (LiFePO4)
Output Port43.2~57.6V, 100A
Input Port43.2~57.6V, 48A
Charge Temperature0°C to 45°C
Discharge Temperature-10°C to 45°C
Storage Temperature-10°C to 45°C
Physical
Net Weight16kg ±0.4kg
Dimensions494 × 239 × 196mm
Compatibility
Compatible ProductsDELTA 3 Max Plus (2048Wh) and DELTA 3 Ultra Plus (3072Wh)
Expandable CapacityUp to two extra batteries via EcoFlow Smart Extra Battery Expansion Adapter
Warranty
Warranty Length5 years
Warranty Information5 years

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EcoFlow
Part no DELTA 3 Max Plus EB
Ascent part no 816923
  • Free NZ deliveryNo hidden fees
  • 100% Kiwi owned34 years in business
  • Net Promoter Score 94Rated by our customers
Questions? (04) 802 3890


"Fast shipping!" Shane, 19 September 2026
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