Can the iPad charger provide iPhone How about charging? Many people have thought about this problem. Some people connect the cable directly to the iPhone in order to get the answer. At this time, the iPhone screen also shows a charging prompt, which seems to prove that it is no problem to use the iPad charger to charge the iPhone. However, some people will still wonder whether the output current of the iPad charger is 2.1A, while the iPhone is only 1A. Will this damage the iPhone? In fact, the current mentioned on the charger is only the maximum current that the charger can provide, but this does not mean that the charger will charge the appliance with the maximum current.

The current output by the charger mainly depends on the electrical appliance itself. Now the slightly more formal rechargeable electronic devices have special charging circuits. They can limit the current according to the situation, so no matter what the maximum power charger is used, there will be no problem.

This means that when you use the 2.1A iPad slave charger to charge the iPhone, the iPad charger will not charge with 2.1A current, so don't worry. In addition, if you use the iPhone charger to charge the iPad, it is no problem. At this time, the iPhone charger will charge the iPad with the maximum output current, that is, 1A current, but it takes longer than 2.1A charging time.

In addition, Apple's charger can also tell whether your device is an iPad or an iPhone. Generally, the USB interface has four pins: 5V power supply, GND ground, positive signal of D+data line and negative signal of D - data line. The Apple charger will test the voltage of the charging device through the D+and D - pins in the USB interface. The voltage on D+of 5V1A charger corresponding to iPhone or iPod is 2V, and D - is also 2V; The 5V2.1A charger used by iPad has a D+voltage of 2.7V and a D - voltage of 2V. Therefore, the charger can distinguish which device is currently used by testing the different voltages on these two pins, and can also adjust the current accordingly, so as to charge safely.

In addition, whether the iPad charger can charge the iPad There are also corresponding answers on the. Apple's official website said, "The iPad USB power adapter is a 10W charger. Although this iPad 10W USB power adapter is designed for iPad use, you can still charge all iPhone and iPod models through it."

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