In October 2020, Apple launched the iPhone 12 series, which uses a new vertical frame design and a more powerful processor to greatly improve the performance of the imaging system. In terms of charging, the wired system is upgraded to 20W PD fast charging, and the wireless system is equipped with a new 15W MagSafe magnetic suction wireless fast charging system.
Today, let's let you understand how the iPhone 12 charging is.
iPhone 12 press conference, Apple announced that all iPhone will no longer deliver chargers, the volume of outer boxes will be reduced by half, the cost of transportation and storage will be halved, and the cost of chargers will be saved to earn a reputation. Only Apple is expected to play with this. All iPhone regardless of high and low version of the distribution of cable is unified for USB-C to Lightning, must be used with PD charger.
For users who have upgraded their old models, if they only have a usb-a charger at home, you can't even charge the battery. If you don't send a charger, you can make users consciously pay for the charger. Only apple dares to do this.
Regardless of this, let's talk about the quick charging of iPhone 12.
1、 Composition of iPhone 12 wired fast charging system
Apple introduced the Lightning interface in 2012 and took the lead in iPhone 5, with the integration of positive and negative blind plug-in charging data leading the Lightning interface industry.
However, today, no matter the data transmission standard or the upper limit of power carrying capacity, lightning interface has been surpassed by usb-c interface in all aspects. Usb-c has become the best configuration of most digital products. However, apple does not intend to replace the iPhone interface. The iPhone 12 series still uses lightning interface, enjoying the huge profits brought by private ecosystem and patents.
The standard cable of the whole series of iPhone 12 is upgraded from usb-a to lightning to usb-c to lighting, which is commonly known as apple fast charging cable. It supports fast charging of PD, and the maximum power can reach 20W.
The cable sheath material is TPE, 1 meter long, and the serial number is printed on the cable body. The contact of lightning terminal head is silver, the electroplating process is upgraded from gold plating to rhodium ruthenium (L ǎ O Li ǎ o), and the visual effect of gold finger is silver. The direct benefit is better electroplating effect, more effective prevention of sweat, liquid and other corrosion contact gold finger, more durable.
The other end of the data cable is a usb-c connector. Use a macro lens to photograph the inside of the usb-c connector. There are 7 pins in each and 14 pins in total. The data rate is USB2.0 transmission standard.
The charging head of the whole iPhone 12 is cancelled, and the usb-c to lightning fast charging cable is used for the data cable, which is no longer compatible with the previous usb-a charger. Users need to use the charger with usb-c physical interface to charge normally.
The iPhone 12 series supports PD fast charging, and the attached charging cable is also usb-c to lightning fast charging cable. It should be noted that if a friend uses the former usb-a charging head (such as the right side), it cannot be used with the attached charging cable to charge the new iPhone.
In the figure, the PD fast charging head based on usb-c output on the left side of the figure can be used, and it needs to support USB PD fast charging standard to trigger PD fast charging.
2、 How fast is the iPhone 12 fast charging?
Apple's website on the charging performance of the iPhone 12:
Compared with the previous generations, the power of the iPhone 12 fast charging system has increased from 18W to 20W. The original apple 18W charger is used to charge the iPhone 12 pro with the power of 9.07v 1.91a 17.38w. It can be seen that the iPhone 12 can be downward compatible with 18W fast charging.
The best matching 20W charger of Apple was stolen from iPad pro. The power of iPhone 12 Pro was 8.91v 2.18a 19.51w. The 20W PD was quickly charged to full speed.
In order to test the maximum power of the iPhone 12, we use Apple 30W charger to charge the iPhone 12 pro with the power of 8.90v 2.49a 22.19w. It can be found that the peak power of the iPhone 12 Pro can exceed 20W. What is the difference between the charging speed of different powers?
In order to make a more intuitive comparison, we tested Apple 5W usb-a charger, apple 12W usb-a charger, apple 18W usb-c charger, apple 20W usb-c charger, 65W usb-c charger.
According to the trend of the bar chart, the 5W charger charges 18% in half an hour, 36% in one hour, and takes 3 hours and 25 minutes to fully charge. The 12W charger charges 44% in half an hour and 61% in one hour. It takes 2 hours and 13 minutes to fully charge the charger. Although compared with 5W, it is still very slow.
Then there's the data of the fast charging group,The charging curves of 18W, 20W and 65W PD are almost the same or even coincident. In terms of speed, the charging rate is about 60% in half an hour, 88% in one hour, and it takes about 1 hour and 40 minutes to fully charge.
At the level of the industry, we admit that the rate has not reached
The iPhone 12 supports fast charging of 20W PD, with a maximum peak value of 22W. 60% of the power can be charged in 30 minutes, and the charging speed of 18W, 22W and 30W has no significant difference, and the battery life can be quickly restored in half an hour.
Based on the universal USB PD fast charging standard, it is compatible with most PD output products on the market.
- THE END -Charging head network