1, Apple phone charger and IPAD charger can be universal.
2. iPad and iPhone chargers are designed differently for a reason. The iPhone's battery capacity is small, requiring only 1A charging current to complete the charge in a reasonable time. Although the larger charging current can greatly shorten the charging time, it will bring more heat, and high temperature is the number one killer of lithium battery life reduction, so the maximum output current of the iPhone charger is designed to be 1A.
3. The charger of iPad is marked with 5V 2.1A, which means that the charger of iPad can only output A maximum current of 2.1A. When using the iPad charger to charge the iPhone, although the iPad charger can provide A maximum of 2.1A current, but because the iPhone can only accept 1A current, the iPad charger only needs to accommodate it.
4, the iPad battery is designed to charge the most suitable charging time when the charging current is 2.1A. If you use the iPhone charger to charge the iPad, because the iPhone charger can only provide a maximum current output, the entire charging time will be 2.1 times. Since Apple has a mark on the USB port data pin, the iPad knows that this is an iPhone charger, so it will not \"require\" more than 1A charging current, and will not overload the iPhone charger and cause damage.
5, as too high current may lead to breakdown of key capacitors, completely logical. The most basic function of the capacitor is \"through AC, separate DC\". The output of the charger is direct current, and no matter how much DC current, it can not pass through the capacitor, and can not cause the capacitor \"breakdown\". It is the high DC voltage that can break down the capacitor, that is, the \"breakdown voltage\".
6. Therefore, regarding the issue of using the iPad charger to charge the iPhone, the conclusion is that it is completely feasible, and neither the iPhone nor the charger will be damaged. The iPhone charger can also charge the iPad, but it will take a little longer to charge
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It's perfectly possible to charge an iPhone with an iPad charger, and it won't hurt either the iPhone or the charger. The iPhone charger can also charge the iPad, but it takes longer to charge.