How long can the Anker SOLIX F3800 run a Refrigerator?
2.6 days
Formula: (3.8kWh × 0.85 inverter efficiency) ÷ 1.26 kWh/day = 2.6 days. At continuous 150 W draw (no duty cycle), about 21.8 hours.
What if you add a battery? The + Home Backup Kit config jumps to 7.7kWh — roughly 5.2 days on a Refrigerator.
Appliance
Refrigerator · 150 W / 800 W surge
Battery (base)
3.8kWh · 6kW / 9kW surge
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Runtime Quick-Check
Runtime Quick-Check
Pick a battery and an appliance — see days of runtime after the 0.85 inverter derate.
2.6 days
Formula: (3840 Wh × 0.85) ÷ 1.26 kWh/day = 2.6 days. Continuous draw ≈ 21.8 hours at full load.
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