Friends who use Apple phones probably won't worry about not bringing a charging cable, because whenever they encounter this time, they can take out the iPad charging cable to save the emergency. Professionally, can the chargers of iPhone and iPad be mixed?
The same as the original interface is OK.
The charger is plugged into a 220V AC power socket. If the USB interface at the other end is not connected to the iPad or iPhone, there will be no current flow and no power consumption.
The charger will not work until the iPad or iPhone is connected. The current flowing through the charger depends on the state of the iPad or iPhone. As long as the iPad or iPhone needs much current within the 220V voltage range, the charger will provide much current.
If the current required by the iPad or iPhone exceeds the maximum current that the charger can provide, the charger will output the maximum current that the charger can provide. In addition, once the output current of the regular charger is too large, it will trigger the circuit protection and suspend the current output.