Extra 1024Wh battery for the DELTA 3 series (DELTA 3, DELTA 3 Plus) and DELTA 2 — NOT compatible with the DELTA 3 Classic. Same 5-year warranty as the station.
Our own read for home backup during a power outage, comparable across units in the catalog. Not Amazon buyers' rating. How we score →
5-year warranty — better coverage than the DELTA 2 Max's extra battery.
Best use case
Anyone with a DELTA 3, DELTA 3 Plus, or DELTA 2 who wants to double their capacity without replacing the unit.
Adds 1024 Wh to a DELTA 3, DELTA 3 Plus, or DELTA 2, plug-and-play and controlled from the same app. Unlike the DELTA 2 Max's extra battery, this one carries a 5-year warranty — same as the station.
Watch the compatibility: the DELTA 3 Classic does NOT have an expansion port, so this battery doesn't work with that specific variant — only DELTA 2, DELTA 3, DELTA 3 Plus, and DELTA 3 1500.
Ideal for: Anyone with a DELTA 3, DELTA 3 Plus, or DELTA 2 who wants to double their capacity without replacing the unit.
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EcoFlow Extra Battery DELTA 3 Series 1024Wh