How long will the Anker 521 PowerHouse run a steam deck / handheld?
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Will the Anker 521 PowerHouse run a steam deck / handheld?
Yes — the 521 PowerHouse runs a steam deck / handheld comfortably
Its 200W continuous output easily covers the 25W draw.
Estimated runtime
about 8 hours
on a single full charge
Est. usable (AC): 196 Wh
Appliance draw: 25 W
Continuous output: 200 W
How we calculated this
We start from the Anker 521 PowerHouse's 196 Wh of estimated usable energy at the outlet — its 256 Wh rating, derated for a safe depth of discharge and ~15% inverter loss — then divide by the steam deck / handheld's 25W draw:
196 Wh ÷ 25 W ≈ 7.8 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.
Other stations running a steam deck / handheld
What else the 521 PowerHouse can run
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