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The iPhone 18 Pro can only achieve half the charge in a quarter of an hour with the right power adapter. And wattage alone isn't enough as a selection criterion, because Apple specifies a second requirement in its technical data that many existing chargers don't meet.
The box contains only a USB-C cable. If you want full charging speed with the iPhone 18 Pro, you'll need to buy a power adapter separately – and you should pay attention to more than just the number on the back. The information in this guide is taken from the iPhone 18 Pro's technical specifications. For other changes compared to its predecessor, see the comparison between the iPhone 18 Pro and iPhone 17 Pro.
Key Facts at a Glance
- Up to 50 percent in about 15 minutes – via cable, with the right power supply.
- A USB PD 3.1 power supply with adjustable voltage and a 60-watt-compatible cable are required.
- Wireless charging via MagSafe takes 30 minutes to reach 50 percent, requiring only 35 watts.
- Compared to the iPhone 17 Pro, that's five minutes less via cable – wirelessly it remains at 30 minutes.
- The values apply equally to iPhone 18 Pro and iPhone 18 Pro Max.
- The power adapter and MagSafe charger are not included with the device.
What Apple specifically demands
For fast charging via cable, Apple specifies in the data sheet a power adapter with at least 60 watts and adjustable voltage, along with a USB-C charging cable. Under these conditions, charging to 50 percent in about 15 minutes is possible.
The corresponding footnote states something slightly different: It refers to the 60 watts for the cable, while the power supply requires USB PD 3.1 or better with adjustable voltage. Both specifications are listed side-by-side on the same page. Therefore, to be on the safe side, make sure you have both – a 60-watt-capable cable and a USB PD 3.1 power supply with AVS.
Wireless charging works differently: Using a MagSafe charger, a power adapter of 35 watts or more is sufficient, and charging to 50 percent takes about 30 minutes. In summary:
| Charging route | Requirement | iPhone 18 Pro | iPhone 17 Pro |
|---|---|---|---|
| USB-C cable | Power supply according to USB PD 3.1 with AVS, 60-watt-compatible cable | about 15 minutes | 20 minutes (from 40 W) |
| MagSafe | Power supply from 35 W | about 30 minutes | 30 minutes (from 30 W) |
A comparison with the iPhone 17 Pro's specifications reveals two developments in opposite directions. Charging via cable is five minutes faster – however, Apple now requires a USB PD 3.1 power adapter with adjustable voltage instead of a simple 40-watt adapter.
Wireless charging, however, remains unchanged: 30 minutes to 50 percent, in both generations. Only the power requirement has increased from 30 to 35 watts. Therefore, anyone using a 30-watt power adapter with the MagSafe charger will no longer achieve the stated charging time with the new model, even though the charging time itself hasn't changed.
According to the data sheet, both figures apply equally to the iPhone 18 Pro and the Pro Max. The larger battery of the Pro Max does not change the percentage figure – 50 percent more capacity, however, also means more energy.
Why wattage alone is not enough
The second part of the requirement is easily overlooked. An adjustable voltage supply, abbreviated as AVS in the footnote, means that the power supply finely adjusts the voltage to the device, instead of simply switching between fixed levels. It is part of the USB PD 3.1 standard, which Apple explicitly requires.
What's revealing is what Apple itself used for testing: its own 40-watt power adapter, which can briefly deliver up to 60 watts. So, a device labeled 40 watts that still meets the requirement. It costs €45 at Apple, but is sometimes available for less at other retailers. Conversely, this means that a power adapter labeled 65 or 100 watts will charge your iPhone 18 Pro quickly, but not necessarily as fast as Apple's stated speed if it lacks AVS (Automatic Charging Speed).
In practical terms, this means you can't rely on wattage alone, in either direction. Before buying, check whether the manufacturer explicitly mentions USB PD 3.1 and adjustable voltage.
Anyone who already has a MacBook power adapter at home can find the appropriate match in our overview of which wattage each model needs.
When the effort is worthwhile
For everyday use, the question is less dramatic than the stated charging times in minutes might suggest. Those who charge overnight won't notice any difference. Fast charging becomes particularly interesting when time is limited – the fifteen minutes before setting off, a quick stop at the office, or the evening after a long day.
For everyone else, MagSafe remains the more convenient solution, even if it takes twice as long. Almost every reasonably modern power adapter provides the necessary 35 watts.
A side note: If your iPhone doesn't charge at all after being completely discharged, it's not necessarily the power adapter's fault. This was a known issue with previous generation iPhones after a completely empty battery.
Charging the iPhone 18 Pro – the most important points at a glance
Fast charging for the iPhone 18 Pro means using a USB PD 3.1 power adapter with adjustable voltage and a cable that can handle 60 watts. If either of these is missing, the device will still charge – just not to 50% in 15 minutes.
Do you prefer to charge your iPhone overnight and accept the longer charging time, or is the extra 15 minutes worth using a dedicated power adapter? Tell us in the comments how you handle it.
Frequently Asked Questions: Fast Charging iPhone 18 Pro
Up to 50 percent in about 15 minutes via cable, wirelessly via MagSafe in about 30 minutes.
One that supports USB PD 3.1 or better with adjustable voltage supply, plus a cable that can handle 60 watts. 35 watts is sufficient for MagSafe.
No. The box only contains a USB-C cable.
Not necessarily for full speed. The predecessor required 40 watts, but now an adjustable voltage supply is also a requirement. The MagSafe charger delivers 35 watts instead of the previous 30.
Yes, via cable: 15 minutes instead of 20 to reach 50 percent. Wirelessly, it remains at 30 minutes for both generations.
The charging speed is irrelevant – what matters is that the power supply supports the standard with adjustable voltage supply, not how much power it could deliver at maximum.
The percentage figures apply equally to both models. Since the Pro Max's battery is larger, it contains 50 percent more energy.
