SiriusWatts

How long will the EcoFlow River 3 Plus run a steam deck / handheld?

Will the EcoFlow River 3 Plus run a steam deck / handheld?

Yes — the River 3 Plus runs a steam deck / handheld comfortably

Its 600W continuous output easily covers the 25W draw.

Estimated runtime
about 9 hours
on a single full charge
Est. usable (AC): 218 Wh
Appliance draw: 25 W
Continuous output: 600 W

How we calculated this

We start from the EcoFlow River 3 Plus's 218 Wh of estimated usable energy at the outlet — its 286 Wh rating, derated for a safe depth of discharge and ~15% inverter loss — then divide by the steam deck / handheld's 25W draw:

218 Wh ÷ 25 W ≈ 8.7 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.

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