How long will the EcoFlow Delta 3 Plus run a portable ac (small)?

Q: Will the EcoFlow Delta 3 Plus run a portable ac (small)?

Probably — but the startup surge runs close to the limit. A portable ac (small) can spike to roughly 2700W for a moment on startup, near the Delta 3 Plus's 2300W surge rating. It usually works, but pairing it with other loads may trip the unit.

Q: How long will the EcoFlow Delta 3 Plus run a portable ac (small)?

The EcoFlow Delta 3 Plus has 1024 Wh (about 784 Wh usable at the outlet, estimated). Running a portable ac (small) that draws 900W, it lasts under an hour on a single full charge.

Will the EcoFlow Delta 3 Plus run a portable ac (small)?

Probably — but the startup surge runs close to the limit

A portable ac (small) can spike to roughly 2700W for a moment on startup, near the Delta 3 Plus's 2300W surge rating. It usually works, but pairing it with other loads may trip the unit.

Estimated runtime

under an hour

on a single full charge

Est. usable (AC): 784 Wh

Appliance draw: 900 W

Continuous output: 1800 W

How we calculated this

We start from the EcoFlow Delta 3 Plus's 784 Wh of estimated usable energy at the outlet — its 1,024 Wh rating, derated for a safe depth of discharge and ~15% inverter loss — then divide by the portable ac (small)'s 900W draw:

784 Wh ÷ 900 W ≈ 0.9 hours

Heads up: a portable ac (small) is a motor/compressor load that spikes 2–3× on startup. The EcoFlow Delta 3 Plus's 1800W continuous / 2300W surge output should be checked against that startup spike.

Real-world runtime varies with temperature, cable losses, and how hard the appliance actually cycles. Treat this as a solid estimate, not a guarantee.

Check Delta 3 Plus price → Full Delta 3 Plus specs →