Stack / DELTA Pro 3
EcoFlow DELTA Pro 3
Updated · 16 Sep 2026 · Sheet checked · 16 Sep 2026
It depends — 4 kW / 4 kWh station
Continuous AC around 4,000 W and about 4,096 Wh in the brick. Watt-hours are the overnight budget — not the surge badge on the carton.
4,000 W
4,096 Wh
EFDELTAPRO3-US
LiFePO₄
Will run
- Fridge + lights + network without fuel smell
- Quiet indoor-adjacent duty when ventilated per the manual
- Expandable kits when you buy EcoFlow’s own extras on purpose
Skip, or measure first
- Anyone comparing 4,096 Wh to a 4,000 W gas generator as if they were the same unit
- Unmeasured well / dryer without checking surge and runtime math
- Treating X-Boost / surge marketing as free continuous headroom
What it is
US SKU EFDELTAPRO3-US on EcoFlow’s product page: portable power station with multi-kW inverter output and multi-kWh LFP pack. Desk review of manufacturer claims — not a cycle-life bench. Outage Stack planning assumption (not manufacturer): usable Wh = rated Wh × 0.85. At a 500 W load: 4,096 × 0.85 ÷ 500 ≈ 6.9 h.
Verdict
It depends. Yes when you need quiet kWh-first backup and accept recharge logistics. No if you needed unlimited fuel runtime or believed watts and watt-hours were interchangeable.