≈ 0.1 days (24h/day) · Safe motor start buffer (68.8% margin).
oxygen concentrator running (420 W max) and start-up (650 W max) draw fit the EcoFlow RIVER 2 Pro's 800 W continuous / 1,600 W surge ratings.
low flow setting 1–2 LPM continuous delivery (280 W)
standard prescription flow rate 3 LPM continuous operation (350 W)
maximum continuous flow setting 5 LPM at maximum pressure (420 W)
≈ 0.1 days (24h/day)
System standby power: 10W (2.5% of total draw)
Provides 4× BS 1363 (230V) (120V 60Hz).
Pure sine wave inverter output. Safe for sensitive medical electronics and variable-speed motors.
Inductive motor/compressor load with 1.4× starting surge (motor inrush) (68.8% worst-case surge margin).
Wall AC fast charge at up to 940W (55m to 80%, 70m to 100%).
Safe envelope verified: Starting surge (500W) remains comfortably below the 1600W surge trip line, with steady-state operation settling into the safe continuous zone at 350W.
About 1.9 hours on AC power, with the oxygen concentrator averaging 350 W (standard prescription flow rate 3 LPM continuous operation (350 W)). The EcoFlow RIVER 2 Pro then draws about 404 W from its battery, including 10 W for the inverter itself. Best case: about 2.4 hours (low flow setting 1–2 LPM continuous delivery (280 W)). Worst case: about 1.6 hours (maximum continuous flow setting 5 LPM at maximum pressure (420 W)).
Yes. The oxygen concentrator's start-up peak of about 500 W (up to 650 W) fits within the EcoFlow RIVER 2 Pro's 1,600 W surge rating, with 59% headroom even in the worst case.
On wall power: about 55 minutes to 80% and 70 minutes to full (EcoFlow figures). With its maximum 220 W of solar input connected, expect about 176 W in full sun, so a full recharge takes roughly 4.6 hours of full sun, about 1.2 days at 4 peak sun hours a day.
It can act as a backup supply: with the oxygen concentrator plugged into the EcoFlow RIVER 2 Pro and the EcoFlow RIVER 2 Pro plugged into the wall, it switches the oxygen concentrator to battery in about 30 ms when the grid fails (EcoFlow calls this EPS mode).
Statutory 30-day retail price announcements & rate revisions
Bord Gáis Energy winter rate adjustment: +1.60c/kWh Day, +0.90c/kWh Boost (2am–5am), and +€12.50/yr standing charge effective 20 Nov 2026.
Energia retail revision: +1.85c/kWh Day, +1.15c/kWh EV Boost (2am–6am), and +€14.20/yr standing charge effective 15 Nov 2026.
Dual Fuel Day Night: Day -4.64c/kWh, Night -3.25c/kWh (effective 2026-11-05)
Electricity Day Night: Day -4.64c/kWh, Night -3.25c/kWh (effective 2026-11-05)
SSE Airtricity statutory price cut: -1.25c/kWh Day, -0.65c/kWh Night, and -€8.40/yr standing charge effective 01 Oct 2026.
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