How long can the Goal Zero Yeti Pro 4000 run a Sump pump?
1.2 days
Formula: (4kWh × 0.85 inverter efficiency) ÷ 2.88 kWh/day = 1.2 days. At continuous 800 W draw (no duty cycle), about 4.2 hours.
Appliance
Sump pump · 800 W / 2000 W surge
Battery (base)
4kWh · 3.6kW / 7.2kW surge
Runtime Quick-Check
Runtime Quick-Check
Pick a battery and an appliance — see days of runtime after the 0.85 inverter derate.
1.2 days
Formula: (3993 Wh × 0.85) ÷ 2.88 kWh/day = 1.2 days. Continuous draw ≈ 4.2 hours at full load.
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