Apple Says iPhone 18 Pro Reaches 50% in 15 Minutes With 40W Charger

Q: Why must you buy Apple's exclusive new adapter to unlock the iPhone 18 Pro's true charging power?

You need Apple’s new adapter because the iPhone 18 Pro’s fastest charging mode depends on a very specific power standard that most existing chargers do not fully support. Apple says the phone reaches 50% in about 15 minutes only when paired with a USB PD 3.1 charger capable of up to 60 watts and, crucially, with Adjustable Voltage Supply. That combination lets the iPhone draw power more aggressively and efficiently than with older USB-C bricks. In practice, Apple’s new 40W Dynamic Power Adapter is the only widely available charger confirmed to meet those requirements. The issue is not simply wattage. Many third-party or older Apple adapters may offer high power, but if they lack the exact USB PD 3.1 profile and adjustable voltage behavior Apple requires, the iPhone will fall back to slower charging speeds. That is why a generic 40W, 45W, or even 60W charger may not unlock the phone’s peak performance. Apple also continues to ship only a USB-C cable in the box, not a power adapter, so buyers who want the headline charging speed must purchase a compatible brick separately. Unless other accessory makers release chargers with the same certified specifications, Apple’s adapter effectively remains the only reliable way to get the iPhone 18 Pro’s full wired charging capability.

Q: Can the upcoming foldable iPhone Duo truly match the massive 45-hour battery life of the new Pro Max?

No—there is no evidence yet that the upcoming foldable iPhone Duo will match the iPhone 18 Pro Max’s 45-hour battery life. What Apple has indicated so far is that the Duo is expected to support the same faster charging speeds as the iPhone 18 Pro line when paired with the right accessories, including a compatible USB PD 3.1 charger with Adjustable Voltage Supply. That speaks to charging performance, not endurance. Apple’s published battery figures currently show the iPhone 18 Pro at up to 36 hours of video playback and the iPhone 18 Pro Max at up to 45 hours. The searched material does not give any battery-life estimate for the foldable Duo, so there is no factual basis to say it can equal the Pro Max. In practice, foldable phones often face battery-life tradeoffs because they must power a larger or dual-display design while fitting batteries into a thinner, more complex chassis. Apple could offset that with new battery technology or efficiency gains, but until Apple releases official runtime numbers, that remains speculative. The clearest takeaway is that the Duo is likely to match the new charging speed standard, not necessarily the Pro Max’s battery longevity. For now, the 45-hour figure remains specific to the iPhone 18 Pro Max.

1 articles · Updated · 9to5Mac · Sep 10

Apple said the iPhone 18 Pro can charge from 0% to 50% in about 15 minutes when paired with its 40W dynamic power adapter, a 60W-capable USB-C cable setup.
That top speed requires a 60W USB PD 3.1 adapter with Adjustable Voltage Supply, and Apple’s own 40W dynamic adapter is currently the only readily available option cited as meeting those specs.
Apple said the wired charging rate is about 33% faster than prior Pro iPhones and roughly 5 minutes quicker to 50% than the iPhone 17 Pro; a 5-minute top-up can add about 6 hours of video playback.
Wireless charging is slower at about 30 minutes to 50% with a MagSafe charger and any 35W power brick, while many existing 96W or 140W laptop chargers may not unlock the new peak speed.
The iPhone 18 Pro opens for preorder Saturday and ships September 18, and Apple said next month’s foldable iPhone Duo will support the same faster charging standard.