≈ 3.2 nights (8h/night) · Safe motor start buffer (98.5% margin).
CPAP machine running (65 W max) and start-up (90 W max) draw fit the Pecron E1500LFP's 2,200 W continuous / 4,400 W surge ratings.
humidifier and heated tube off (15 W)
standard pressure with humidifier active (40 W)
high pressure with HumidAir and heated tube at max (65 W)
Via ResMed Air11 90 W DC/DC Converter (part 39231)
Via ResMed Air11 90 W DC/DC Converter (part 39231)
Via ResMed Air11 90 W DC/DC Converter (part 39231)
≈ 3.2 nights (8h/night)
System standby power: 16W (27% of total draw)
Provides 4× CEE 7/3 (230V) (120V 60Hz).
Pure sine wave inverter output. Safe for sensitive medical electronics and variable-speed motors.
Inductive motor/compressor load with 1.6× starting surge (motor inrush) (98.5% worst-case surge margin).
Wall AC fast charge at up to 1400W (70m to 80%, 95m to 100%).
Safe envelope verified: Starting surge (65W) remains comfortably below the 4400W surge trip line, with steady-state operation settling into the safe continuous zone at 40W.
About 26 hours on AC power, with the CPAP machine averaging 40 W (standard pressure with humidifier active (40 W)). The Pecron E1500LFP then draws about 59 W from its battery, including 16 W for the inverter itself. Best case: about 48 hours (humidifier and heated tube off (15 W)). Worst case: about 17.8 hours (high pressure with HumidAir and heated tube at max (65 W)). At 8 hours a night, that's about 3.2 nights.
Yes. Using the ResMed Air11 90 W DC/DC Converter (part 39231) on the Pecron E1500LFP's 12 V car socket, the CPAP machine runs about 39 hours instead of 26 hours on AC, 51% longer, because it skips the inverter's conversion loss and its 16 W idle draw. That's 4.9 nights instead of 3.2 nights.
That simple division gives 38 hours, but the Pecron E1500LFP's inverter draws about 16 W whenever its AC outlets are on. At this light load that's 27% of everything the battery supplies, and inverter conversion losses take a further share. The idle figure comes from Pecron.
On wall power: about 70 minutes to 80% and 95 minutes to full (Pecron figures). With its maximum 700 W of solar input connected, expect about 560 W in full sun, so a full recharge takes roughly 2.9 hours of full sun, so it can refill in a single day with 4 peak sun hours.
It can act as a backup supply: with the CPAP machine plugged into the Pecron E1500LFP and the Pecron E1500LFP plugged into the wall, it switches the CPAP machine to battery in about 20 ms when the grid fails (Pecron 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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