20W, 30W or 40W? The Charger That Fills Your iPhone 17 in Half the Time

Quick answer: any iPhone from 12 onward fast-charges with a USB-C Power Delivery (PD) charger of 20W or more. The iPhone 17 family can take more — Apple rates it for up to around 40W with a compatible adapter — so a 30–45W GaN charger is the smart buy that also future-proofs you.

The charger brick is the most ignored accessory you own. People spend a fortune on the phone, then charge it overnight from a tiny old cube that tops out at 5W. Here’s how to fix that in one purchase.

How many watts can your iPhone actually use?

A higher-watt charger is safe: your iPhone only pulls what it can handle. A 65W charger won’t “push” 65W into your phone — but it can also charge your iPad or laptop.

Why “PD” matters more than the number

USB-C Power Delivery is the language your iPhone speaks for fast charging. A 30W charger without PD can be slower than a 20W charger with it. Always check the box for “PD” or “Power Delivery.”

GaN: the small charger with big muscle

GaN (gallium nitride) chargers run cooler and are much smaller than old silicon bricks. A 30–65W GaN charger from Anker, UGREEN or Baseus can charge your phone, AirPods and laptop — perfect for travel and Egyptian summers when heat is the enemy.

Don’t forget the cable

Fast charging needs a USB-C to USB-C cable (iPhone 15 and later) or USB-C to Lightning (iPhone 14 and earlier). A cheap cable can cap your speed. See our cable guide.

Shop all chargers or check if fast charging hurts your battery.