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EcoFlow · Expansion battery

EcoFlow DELTA 3 Series Smart Extra Battery

Current model

EcoFlow DELTA 3 Series Smart Extra Battery: 1,024 Wh expansion battery. Check the required station and connection cable.

Capacity
1,024 Wh
Sale 389 USD · Regular 499 USD

Selected configuration: DELTA 3 Series Smart Extra Battery

Exact model / SKU

EFDELTA3P-EB · 41631849971785

Check current USD price and availability at EcoFlow. Merchant checkout confirms the selected configuration.

Seller prices, financing, promotions, shipping and returns are set by the merchant. Manufacturer warranties follow the exact product and purchase terms.

Facts reviewed 2026-09-24

Information still to verify
  • A matched manual or download has not yet been verified for this market.
  • The complete box contents for the selected configuration have not yet been verified. Confirm included cables and adapters with the seller.
  • Warranty duration and regional purchase conditions have not yet been verified. Check the manufacturer’s terms for the selected seller and market.

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Full Specs

Specifications apply to the stated market and configuration. Expanded-system figures require the named additional equipment.

Capacity
1,024 Wh single batteryEcoFlow DELTA 3 Series Smart Extra Battery US exact specification
Battery
Cell chemistry
Lithium iron phosphate (LFP).EcoFlow source ↗ · reviewed 2026-09-24
Rated capacity
Adds 1,024 Wh of battery storage.EcoFlow source ↗ · reviewed 2026-09-24
Charging
Charging connection
Recharge through the connected power station’s extra-battery port.Available charging methods and input limits depend on the connected station and charging equipment.EcoFlow source ↗ · reviewed 2026-09-24
Configurations & compatibility
Compatible stations
DELTA 3 and DELTA 3 Plus, using the station’s extra-battery connection.EcoFlow source ↗ · reviewed 2026-09-24
Expanded configuration
A compatible 1,024 Wh station plus one 1,024 Wh extra battery provides 2,048 Wh total rated storage.The power station is additional equipment; the extra battery is not a second AC inverter.EcoFlow source ↗ · reviewed 2026-09-24
Warranty & documentation
Manufacturer warranty
EcoFlow advertises a five-year manufacturer warranty.Check regional warranty terms and purchase eligibility.EcoFlow source ↗ · reviewed 2026-09-24

Verified compatible accessories