Tests reveal the charging speed of the upcoming iPhone 17.

One notable upgrade in the iPhone 17 lineup is the addition of faster charging capabilities.

Apple has historically offered slower charging speeds, with its website officially stating 20W support.

The new iPhone 17 models now support speeds up to 40W with wired charging. This feature is available on the standard iPhone 17, but the iPhone Air remains limited to 20W charging.

Here's a breakdown by model:

iPhone 17 Pro/Pro Max: Up to 40W wired

iPhone Air: Up to 20W

iPhone 17: Up to 40W

While companies like Xiaomi and OnePlus use proprietary fast-charging methods, Apple uses the industry-standard USB-C PD (Power Delivery).

This means that third-party chargers from brands like Anker and Ugreen are more compatible with iPhones and Galaxy devices that use USB-C PD than with Xiaomi or OnePlus phones.

Apple has also adopted the USB PD 3.2 standard, including the AVS protocol. More details on AVS will be provided later, but first, here are the charging test results.

iPhone 17 wired charging speed test

iPhone 17 iPhone Air iPhone 17 Pro iPhone 17 Pro Max

15 mins:

38% 15 mins:

31% 15 mins:

39% 15 mins:

38%

30 mins:

67%

30 mins:

54% 30 mins:

67% 30 mins:

64%

45 mins:

82%

45 mins:

71% 45 mins:

82% 45 mins:

81%

Full charge:

1 hour 16 minutes Full charge:

1 hour 36 minutes Full charge:

1 hour 16 minutes Full charge:

1 hour 16 minutes

iPhone 17 vs iPhone 16 charging speed comparison

Charging

Phone Full Charging 30 min Charge

Wired Wired

Apple iPhone 17

3692 mAh

1h 16min 67%

Apple iPhone 16

3561 mAh

1h 42min 59%

Apple iPhone Air

3149 mAh

1h 36min 54%

Apple iPhone 17 Pro

4252 mAh

1h 16min 67%

Apple iPhone 16 Pro

3582 mAh

1h 34min 58%

Apple iPhone 17 Pro Max

5088 mAh

1h 16min 64%

Apple iPhone 16 Pro Max

4685 mAh

1h 42min 57%

More battery and charging details for tested phones are available on our PhoneArena Battery Score page.

The iPhone 17 series represents a significant improvement over the iPhone 16 series.

The iPhone 17 Pro can reach a 67% charge in 30 minutes, compared to 58% for the 16 Pro. Full charging times are now around 1 hour and 15 minutes, down from about 1 hour and 40 minutes.

Is the new Dynamic Power Adapter required for optimal charging?

Apple has also released a new $40 single-port USB-C charger called the 40W Dynamic Power Adapter with 60W Max, alongside the iPhone 17.

This charger is available in select markets such as the US.

The "dynamic" aspect of the charger is notable. Apple advertises it as a 40W charger with a maximum of 60W, which it cannot sustain continuously. This may be more accurate than some third-party chargers that are labeled as 60W.

According to Redditor privaterbok's tests, the charger can power larger devices such as power stations at 60W for about 18 minutes before dropping to 40W.

Is this new adapter necessary for fast charging the iPhone 17 series?

Not necessarily. Similar results can be achieved using any USB-C PD charger that supports 40W, although it may offer slightly faster speeds.

The following chargers were tested:

Samsung 45W charger

Spigen ArcStation ProGan 65W

Baseus PicoGo 45W

Asus ROG Phone 65W charger

The power meter showed that all of these chargers reached around 36W charging speed with the new iPhone 17 models.

USB-C PPS vs AVS

Delving deeper into the technical aspects:

Most current USB-C PD chargers use PPS (Programmable Power Supply), which is also supported on many Android flagship phones. Apple uses AVS (Adjustable Voltage Supply) with the iPhone 17 series. AVS is a newer standard that is required for fast charging under the USB PD 3.2 standard, whereas PPS is optional.

PPS and AVS both facilitate fast charging, but in slightly different ways. PPS is designed for quickly charging smaller devices using real-time voltage adjustments, while AVS prioritizes stable voltages and safety through smoother transitions and corrosion prevention.

The iPhone 17 supports AVS but not PPS. Using a PPS charger will cause the iPhone 17 to revert to USB-C Power Delivery 3.0 charging, meaning it will still charge quickly but will not utilize the specific PPS optimizations available on some Android flagship devices, primarily the programmable voltage adjustments.