How long can the Bluetti FridgePower run a Router + modem?
3.6 days
Formula: (2kWh × 0.85 inverter efficiency) ÷ 0.48 kWh/day = 3.6 days. At continuous 20 W draw (no duty cycle), about 3.6 days.
What if you add a battery? The + BlueCell 200 config jumps to 4kWh — roughly 7.1 days on a Router + modem.
Appliance
Router + modem · 20 W / 20 W surge
Battery (base)
2kWh · 1.8kW / 3.6kW 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.
3.6 days
Formula: (2016 Wh × 0.85) ÷ 0.48 kWh/day = 3.6 days. Continuous draw ≈ 3.6 days at full load.
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