As evident from the latest iPhone 15 series and the updated AirPods Pro 2, Apple is transitioning from the Lightning port to USB-C. According to Bloomberg's Marc Gurman, all AirPods models and Apple accessories are set to shift from Lightning to USB-C by the end of 2024. Consequently, the AirPods 4 will most definitely feature a USB-C port. While the third-generation AirPods can be charged using MagSafe, a Qi wireless charger, or a Lightning cable, the latter will not be an option for the AirPods 4. The latest AirPods Pro also supports charging with an Apple Watch charger, suggesting that the AirPods 4 will likely offer this charging method as well. Apple appears to be broadening its charging technology beyond just the Pro models. So, it's highly probable that this extra charging method will be included in the fourth-gen AirPods, giving users more flexibility.