EcoFlow DELTA Pro Ultra: runtime & specs
6,144 Wh · 7,200 W continuous AC · 5,600 W max solar input · LFP (LiFePO4). Specs below are the manufacturer's published figures — continuous and surge watts are separate numbers here, because they are separate numbers in reality.
Manufacturer specifications
| Capacity | 6,144 Wh |
|---|---|
| Maximum capacity with expansion | 30,720 Wh |
| AC output (continuous) | 7,200 W |
| AC output (surge) | 10,800 W |
| Boost mode | — |
| Maximum solar input | 5,600 W |
| Solar input voltage range | High-PV 80-450V; Low-PV 30-150V |
| Battery chemistry | LFP (LiFePO4) |
| Cycle life | 3,500 cycles to 80% capacity |
| AC charging input (max) | Not published in the source retrieved |
| Weight | 181.8 lbs |
Source: manufacturer product page · pulled 2026-10-19. Expansion: Up to 5 x DELTA Pro Ultra Batteries per inverter (30kWh); multi-inverter systems to 90kWh. If a row says "not published", the manufacturer doesn't publish that figure in the source we retrieved — we leave it blank rather than guess.
What it runs, and for how long
Estimates use our published formula — capacity × 0.85 ÷ load, duty cycle applied to cycling loads, and a start check against the surge rating (methodology). Loads that fail the start check are marked, not given a fake runtime.
| Load | Estimated runtime |
|---|
Try your own load
EcoFlow DELTA Pro Ultra questions
How long will the EcoFlow DELTA Pro Ultra run a refrigerator?
About 18.7 hours for a typical fridge at a 40% compressor duty cycle (700 W nameplate draw while running), using our standard formula: 6,144 Wh × 0.85 ÷ 280 W average. That is the duty-cycled figure; the same station runs the fridge for about 7.5 hours if the compressor never cycles off.
How long will it run a CPAP?
About 130.6 hours at 40 W — a typical CPAP without a heated humidifier — or roughly 16.3 nights at 8 hours a night. With a heated humidifier (~90 W) expect about 58.0 hours. That's device runtime math only; see the CPAP calculator for your device's actual wattage.
How long does it take to recharge from solar?
With 400 W of panels, the EcoFlow DELTA Pro Ultra needs about 19.7 hours of full sun for a full charge after the 0.78 real-world derate. Try other panel sizes in the solar charging calculator.
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