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How does the DELTA Pro 3 compare?
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GridMatch assessment
Editorial take by GridMatch Editors
The EcoFlow DELTA Pro 3 is a 4.096 kWh LiFePO4 expandable station with 4,000 W continuous output, 8,000 W surge, and true 120V/240V split-phase from a single unit. One unit plus two extra batteries reaches 12,288 Wh — the practical critical-load expansion figure. EcoFlow marketing also cites ~48 kWh / 12 kW figures that require multiple parallel units plus extra batteries and smart generators; 12 kW is parallel output, not capacity. Standalone UPS switchover is about 10 ms. About 113 lb with wheels.
Verdict: Best Without Permanent Installation
What works
- Best Without Permanent Installation
- Native 120V/240V output
- Expandable to 12.3kWh
- 10 ms UPS switchover
- LiFePO4 chemistry
Tradeoffs
- 240V is for cord-connected loads, not a panel transfer feed
Full Specifications
Technical Specifications
Runtime Quick-Check
Runtime Quick-Check
Pick a battery and an appliance — see days of runtime after the 0.85 inverter derate.
Formula: (4096 Wh × 0.85) ÷ 1.26 kWh/day = 2.8 days. Continuous draw ≈ 23.2 hours at full load.
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