Can you charge an iPhone 18 Pro with a Steam Deck 45W?
Worked out from the manufacturers’ specifications. Have a different charger? Pick it below the answer.
It charges at normal speed. For the fastest speed the iPhone 18 Pro needs a charger with AVS, which the Steam Deck 45W doesn’t support.
Estimated from the manufacturer’s stated fast-charge time, with the device idle.
Try another charger
How long to 50% with each charger
Shorter bar is faster. The highlighted row is the charger on this page.
Want it faster?
Full speed needs 60 W or more with AVS. These chargers get there:
iPhone 18 Pro charging specs
- Fast charging needs
- 60 W + AVS
- Max input (approx.)
- 50 W
- Steam Deck 45W
- 45 W · USB-C
Sources: Apple: Fast charge your iPhone · Apple: iPhone 18 Pro tech specs · 9to5Mac: How to fast charge iPhone 18 Pro · Gizchina: iPhone 18 Pro charging speeds · iDrop News: iPhone 18 Pro needs an AVS charger for top speed · Steam Deck tech specs. Checked 2026-10-17.
Quick answers
Is it safe to charge the iPhone 18 Pro with the Steam Deck 45W?
Yes. USB Power Delivery negotiates power, so the iPhone 18 Pro 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 18 Pro need for fast charging?
60 W or more, from a USB-C PD charger that supports AVS. Fast charges to 50% in about 15 minutes with a 60W-capable USB-C adapter that supports Adjustable Voltage Supply (AVS), such as Apple’s 40W Dynamic Power Adapter (60W Max). Without AVS, reports show it settles at roughly 27–30W.
How long does the iPhone 18 Pro take to charge with the Steam Deck 45W?
About 20 min to 50% and 58 min to full, estimated with the device idle.