How long will the EcoFlow River 3 run a phone charge?

Q: Will the EcoFlow River 3 run a phone charge?

Yes — the River 3 runs a phone charge comfortably. Its 300W continuous output easily covers the 10W draw.

Q: How long will the EcoFlow River 3 run a phone charge?

The EcoFlow River 3 has 245 Wh (about 188 Wh usable at the outlet, estimated). Running a phone charge that draws 10W, it lasts about 19 hours on a single full charge.

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Will the EcoFlow River 3 run a phone charge?

Yes — the River 3 runs a phone charge comfortably

Its 300W continuous output easily covers the 10W draw.

Estimated runtime

about 19 hours

on a single full charge

Est. usable (AC): 188 Wh

Appliance draw: 10 W

Continuous output: 300 W

How we calculated this

We start from the EcoFlow River 3's 188 Wh of estimated usable energy at the outlet — its 245 Wh rating, derated for a safe depth of discharge and ~15% inverter loss — then divide by the phone charge's 10W draw:

188 Wh ÷ 10 W ≈ 18.8 hours

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 River 3 price → Full River 3 specs →