Can you charge an iPhone Air with a Steam Deck 45W?
Worked out from the manufacturers’ specifications. Have a different charger? Pick it below the answer.
The Steam Deck 45W meets the iPhone Air’s top charging speed of about 20 W.
Estimated from the manufacturer’s stated fast-charge time, with the device idle.
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How long to 50% with each charger
Shorter bar is faster. The highlighted row is the charger on this page.
iPhone Air charging specs
- Fast charging needs
- 20 W
- Max input (approx.)
- 20 W
- Steam Deck 45W
- 45 W · USB-C
Sources: Apple: iPhone Air tech specs · Apple: Fast charge your iPhone · Steam Deck tech specs. Checked 2026-10-17.
Quick answers
Is it safe to charge the iPhone Air with the Steam Deck 45W?
Yes. USB Power Delivery negotiates power, so the iPhone Air only takes what it can handle and the charger only gives what it can supply. A weaker charger is slower, not dangerous.
How many watts does the iPhone Air need for fast charging?
20 W or more. Fast charges to 50% in about 30 minutes with a 20W or higher USB-C adapter.
How long does the iPhone Air take to charge with the Steam Deck 45W?
About 30 min to 50% and 1 h 40 min to full, estimated with the device idle.