iPhone Duo Hits 50 Percent in 20 Minutes Only With Specific 60 Watt Hardware
Apple documentation reveals that reaching the device's peak wired speed requires a specific combination of cables and power adapters.
By Maya Sokolov ·

The iPhone Duo can reach 50 percent battery in roughly 20 minutes, but only if users pair it with the correct power setup. Apple’s support documentation specifies that this speed is not automatic. The phone requires the USB-C cable included in the box along with a power adapter that meets certain technical standards.
Apple identifies its own 40W Dynamic Power Adapter with 60W Max as a compatible option. That adapter was listed at $34. Buyers can also use third-party chargers, provided they are rated for 60W or more. The documentation states that these external chargers must use Adjustable Voltage Supply and support USB Power Delivery 3.2.
Wireless charging operates at a slower pace. The company notes that the device reaches 50 percent in about 30 minutes when connected to a wireless source. To achieve this speed, users need a MagSafe Charger, listed at $30, or an adapter rated at 35W or higher. Apple points to compatible units from its own lineup and from Anker.
The 9to5Mac author suggests that third-party options often provide better value than first-party products. The writer highlights Anker’s 100W charging brick as a top pick. That single unit serves iPhones, Macs, and iPads. The author also notes that Apple’s 40W adapter remains a good deal for those who prefer a brand-name accessory, particularly at its reduced price.
Users who find the included cable too short can purchase Apple’s official 2-meter USB-C cable. The article mentions that this accessory is currently available at a discount. Apple says the phone supports fast charging over both wired and wireless connections, but the maximum speeds depend entirely on the specific hardware used.
Source: 9to5Mac





