When you need to charge your iPhone or iPad, we recommend that you use the USB power adapter and USB cable that come standard with your device.
What effects does a 3 amps output charger have on the long run battery life of the phone?. Does using the Apple 12W USB Power Adapter with iPhone 6s cause. A charger is simply a voltage source with a current limiting capacity.
It doesn't look like much, but on the inside Apple's iPhone charger is incredibly. power on and off around 70,000 times a second to get the right output voltage.
A feedback mechanism regulates the chopping frequency to keep the output voltage stable. Name-brand chargers use a specialized control IC to run the .