According to the official information so far, the iPhone 15 charger port, the same as the iPhone 15 Pro charging port, uses a USB-C connector, rather than the previous Lightning port. So the iPhone 15 charger type should be the common USB C charger. And you can use a USB-C to USB-A or USB-C to USB-C cable to connect with the iPhone 15 charge port.

Yes, the iPhone 15 charging can generally be done with older chargers, especially those also supporting USB-C charging. However, you need to use a USB-C to Lightning cable for older iPhone chargers without USB-C ports. To get optimal charging, it's always recommended to invest in new chargers to enjoy the latest fast and efficient charging.

Yes, iPhone 15, like previous iPhone models, supports third-party chargers if they come with a compatible iPhone 15 or iPhone 15 pro charger port and meet the relevant charging output. However, please remember to to choose certified third-party chargers from renowned manufacturers like Anker Prime 100W GaN Wall Charger (3 Ports) to guarantee charging performance and safety, and avoid low-quality chargers which may risk damaging your device.

Yes, the iPhone 15 supports fast charging. Generally, you can use an official 20W adapter to get it charged up to 50% in around 30 minutes. However, using the Anker Prime 100W GaN Wall Charger enables you to unleash the full charging potential of your iPhone 15 and charge it faster.

Yes, it is generally safe to charge the iPhone 15 overnight. Apple's devices, including the iPhone 15, are designed with safety features to prevent overcharging and excessive heat. Additionally, most chargers like Anker portable chargers for iPhone 15 are also equipped with a safety system delivering secure and protected charging. However, please always use reputable chargers to ensure safe and efficient overnight charging.