How long can the Bluetti AC500 + B300S run a Oxygen concentrator?
7.5 hours
Formula: (3.1kWh × 0.85 inverter efficiency) ÷ 8.4 kWh/day = 7.5 hours. At continuous 350 W draw (no duty cycle), about 7.5 hours.
What if you add a battery? The AC500 + 2× B300S config jumps to 6.1kWh — roughly 14.9 hours on a Oxygen concentrator.
Appliance
Oxygen concentrator · 350 W / 600 W surge
Battery (base)
3.1kWh · 5kW / 10kW 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.
7.5 hours
Formula: (3072 Wh × 0.85) ÷ 8.4 kWh/day = 7.5 hours. Continuous draw ≈ 7.5 hours at full load.
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