MacRumors has just released a complete guide that shows us all the tests they have done to show us how thefast charge on iPhone. Both the iPhone 8, 8 Plus, and iPhone X offer support for USB Power Delivery, a way of fast charging via a USB-C to Lightning cable.But unlike other companies that include the fast charging system with their phones, Apple continues to include the slow and simple 5W charger, which takes forever to charge our smartphones.
To be able to access the fast charge we have to invest in a charger that offers a USB-C output, and also, buy a USB-C cable to Lightning. Going for the official option ends up costing us around $ 80 (yes, seriously). But using a charger from another manufacturer like Anker or Aukey can reduce the cost to $ 40 or $ 50. Fortunately,There is another option to speed up the charge, and it is using an iPad charger that usually costs $ 20.An iPad charger is also compatible with previous iPhone models, and the charging time is quite similar, giving us much more battery in less time than the charger included in the box. The iPad charger is 12W (5V at 2.4 amps) and here we can also buy a charger from another manufacturer, greatly reducing the price.
The graph above illustrates different loading options.Something interesting: charging the iPhone wirelessly takes the same time as charging with the charger included in the box.Both charge at 5W, so the results after 15, 30, 45, and 60 minutes are almost identical. With the update to iOS 11.2, Apple has implemented support for wireless fast charging as well, at 7.5W, which is even faster than charging with a cable and the charger included in the box. Lastly, we have the iPad and USB-C Chargers, which offer better overall charging but as you can see the difference is not much between the two after 60 minutes. There is a difference in half an hour, where charging via USB-C is faster (49% vs. 39%), but after 60 minutes, the difference is significantly shorter.
Another interesting point: using a USB-C charger of ms Watts that 18 seems to offer no major advantages, with the 87W Macbook Pro 15 charger charging the iPhone at the same time as the 18W. You can see all the Macrumors tested chargers in the original post.
As a conclusion, we can say that USB-C charging is the fastest option, but it requires too great an investment. The best way to charge the iPhone is using a 12W iPad charger and the same cable that comes in the box, and almost double the full load at the same time.With an iPad charger, in half an hour, we can get 39%, versus the 20% that we get with the charger that comes in the box. And yes, charging wirelessly at standard speed (5W, or 5 Volts at 1 amp), is basically the same as doing it with the charger included in the box.
However, this charging speed of iPhones pales with what we can find on Android. The Mate 10 Pro that I use frequently, for example, can charge its 4,000 mAh battery up to 55% in 30 minutes using SuperCharge technology. A Samsung Note 8, with the charger included in its box, can reach 46-48% using Samsung's Adaptive Fast Charging technology. Both options are better and, unlike Apple, include these higher speed chargers in the box.