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10,1 h

≈ 0,4 days

LiFePO4: DoD 90–95%, aging ~10%/yr. Lead-acid: DoD 50%. Formula: hours = kWh × DoD × (1−losses) ÷ kW. A base kit (fridge+lights+router) ≈ 300–400 W → 5 kWh lasts ~12 h.