A: Possible causes:
• The device is connecting to ports other than C1. Only the C1 port supports 140W output. To connect to the C1 port, make sure to use cables with a power rating of 140W or higher.
• Incorrect cables are used for charging Apple MacBook Pro (16"). To achieve 140W output power, Apple MacBook Pro (16") with M1 or M2 chips must use USB-C to MagSafe cables for charging, while Apple MacBook Pro (16") with M3 chips can use USB-C to USB-C or USB-C to MagSafe cables for charging.
• The charging power is related to the device battery level. When the device battery level is almost full, the charging power is reduced to protect the device.