How long can the EcoFlow DELTA Pro Ultra run a Chest freezer?

6.1 dayswell beyond what you asked for

Formula: (6.1kWh × 0.85 inverter efficiency) ÷ 0.86 kWh/day = 6.1 days. At continuous 120 W draw (no duty cycle), about 1.8 days.

What if you add a battery? The + Extra Battery config jumps to 12.3kWh — roughly 12.1 days on a Chest freezer.

Appliance

Chest freezer · 120 W / 600 W surge

Battery (base)

6.1kWh · 7.2kW / 10.8kW surge

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Runtime Quick-Check

Pick a battery and an appliance — see days of runtime after the 0.85 inverter derate.

BatteryApplianceQuantity

6.1 days

Formula: (6144 Wh × 0.85) ÷ 0.86 kWh/day = 6.1 days. Continuous draw ≈ 1.8 days at full load.

Running more than one device?