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• 0.85 efficiency. Converting battery power to wall power, plus the station's own idle draw, typically costs 15–25% of the label capacity (PowerOutage.us, Jackery). We use the optimistic end; a cold room or an older battery will cut it further.
• Start-up surge. Compressors (fridges, freezers, pumps, AC) pull a short spike when they start, often 2–3× running watts and up to 6× for older units (OUPES, BatterySkills). The station's surge rating must cover it.
• Average vs. running watts. A fridge's compressor cycles on and off, so its average draw is far below its running watts. New ENERGY STAR fridges average about 41 W (top-freezer) to 76 W (side-by-side) over a day (GreenCalculus). We round up. Your EnergyGuide label gives your exact average: kWh per year ÷ 8.76.
• Verdict. Yes = at least 15% more runtime than you need. Barely = enough, with under 15% spare. No = it runs out early, or it can't start or carry the load.

Appliance assumptions

Power station specs

Appliance figures are typical estimates. Prices change often and are shown as typical US ranges, not quotes. Specs checked .