How long can the Tesla Powerwall 3 run a Oxygen concentrator?
1.4 days
Formula: (13.5kWh × 0.85 inverter efficiency) ÷ 8.4 kWh/day = 1.4 days. At continuous 350 W draw (no duty cycle), about 1.4 days.
Appliance
Oxygen concentrator · 350 W / 600 W surge
Battery (base)
13.5kWh · 11.5kW / 11.5kW surge
Runtime Quick-Check
Runtime Quick-Check
Pick a battery and an appliance — see days of runtime after the 0.85 inverter derate.
1.4 days
Formula: (13500 Wh × 0.85) ÷ 8.4 kWh/day = 1.4 days. Continuous draw ≈ 1.4 days at full load.
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