Fast charging head and slow charging cable cannot be charged fast.
To achieve fast charging, we must have four conditions, the first charging head must have the function of fast charging; The second charging line has a built-in charging chip to meet the current requirements of fast charging, and can establish handshake communication with the charging head and equipment; The third device supports fast charging; The fourth charging head, charging cable, and device must all support at least one of the same fast charge protocols.
The slow charging line does not meet the second of the above four conditions, so fast charging cannot be achieved.