Apple’s iPhone 18 Pro Max is rated for about 50% charge in 15 minutes when paired with a 60W-capable or higher USB-C power adapter that supports Adjustable Voltage Supply (AVS) and a USB-C cable. Early wired tests produced between 44% and 50% after 15 minutes, so the headline improvement is real—but the exact result depends on the charging setup and test conditions.
The iPhone 18 Pro Max changes Apple’s charging story
Apple specifies a 60W-capable AVS adapter for its 15-minute target. That is a meaningful jump from the lower-power charging setups associated with earlier iPhone generations, especially if you need a quick burst before leaving home. The useful part is the first quarter-hour: Apple’s figure is designed around reaching roughly half the battery, not merely increasing the adapter’s maximum wattage on paper.
A 100W USB-C adapter can be used when it is compatible with the phone’s charging requirements, but the published specification does not say that it will charge the iPhone 18 Pro Max faster than the 60W-capable AVS setup.
The box includes a USB-C charging cable. The power adapter is sold separately.
What early tests measured
The results so far are close to Apple’s target, but not identical. One 60W wired test reached 44% after 15 minutes and 77% after 30 minutes. Other early results reported 50% after 15 minutes with a 60W adapter.
The difference is not surprising in a charging test. Starting battery level, cable, adapter implementation, temperature, software and measurement procedure can all affect the curve. A 60W label tells you the adapter’s capability; it does not guarantee that the phone will draw 60W continuously or deliver the same percentage at every attempt.
A separate reported measurement attributed a brief 52W peak to the phone, but that figure does not replace the more useful battery-percentage results. The practical takeaway is simpler: a compatible 60W-class wired setup should make a short top-up substantially more useful than before, while the full-charge curve still needs to be judged under consistent conditions.
Why the Galaxy S26 Ultra comparison is not definitive yet
The iPhone 18 Pro Max has also been compared with the Samsung Galaxy S26 Ultra. A reported comparison placed the Galaxy at approximately 70% after 30 minutes, alongside a 60W charging specification and a 5,000mAh battery. The iPhone 18 Pro Max was reported at 50% after 15 minutes in the same broader coverage, while the separate 60W test reached 77% after 30 minutes.
Those numbers do not form a standardized head-to-head result: the published conditions do not match for battery starting level, charger model, cable, temperature and testing procedure. That makes the comparison useful as an early reference, not a universal ranking of charging speed.
The iPhone 18 Pro Max’s battery capacity has also been reported as 5,391mAh in secondary video specifications. Apple’s listed technical specifications emphasize charging behavior and endurance figures rather than giving that capacity in the supplied specification table.
Wireless charging reaches 25W
The iPhone 18 Pro Max supports up to 25W over MagSafe and up to 25W over Qi2. Apple says MagSafe can reach about 50% in 30 minutes when used with a 35W-or-higher power adapter.
That makes wired charging the option to choose when speed matters most. MagSafe is more convenient for a desk, nightstand or stand-mounted setup, while Qi2 offers the same listed maximum wireless power. Actual wireless performance can change as the phone and charging puck warm up, so the maximum figure is not a promise of constant power throughout the session.
The charger needed for the fastest wired result
For Apple’s fastest published wired result, use:
- A USB-C power adapter rated at 60W or higher.
- Support for Adjustable Voltage Supply (AVS).
- A USB-C charging cable.
The iPhone 18 Pro Max includes the cable but not the wall adapter. If you already own a compatible USB-C charger, check that it supports the required charging profile rather than choosing solely by its highest printed wattage.
What changes for US buyers on September 18
Apple lists the iPhone 18 Pro family as available in the United States starting September 18, 2026. For buyers considering the iPhone 18 Pro Max, the charging upgrade is therefore tied to a straightforward accessory decision: the phone can reach Apple’s 15-minute target only with the specified 60W-capable AVS setup, and that adapter is not included in the box.
