Since we know electronic products, we can't do without charging. No matter how expensive or advanced the products are, they need charging. Mobile phone charging is an inevitable problem for everyone. Whether it is a big cell phone in the "ancient times" or a variety of smart phones nowadays, charging is an eternal topic.

Ancient times:

Nokia N72 Power Adapter

Take the Nokia N72 for example. The battery capacity is 970mAh, and the screen is 2.1 inches. At that time, Nokia mobile phones were still using round head chargers, but the MiniUSB or MicroUSB interface was not used for unified charging. So there was no special demand for charging speed at that time, and the output of the power adapter provided was only 5V/350mA, which was also the most basic state of the power adapter at that time. Since the cell phone battery capacity was not large, the output current was also a very rational state.

Intelligent era:

After the enlightenment of smart phones and mobile phone applications, Android and iOS mobile phone systems gradually came into our sight. At this time, wave after wave of Android smartphones and iPhones also came out. They all have one feature - a large screen. Compared with the size of the previous mobile phone screen, their 3.5-inch screen can also be regarded as a large screen.

HTC G1 power adapter

HTC G1, as the ancestor of Android phones (Xiaobian once had one), uses a 1150mA battery, so the corresponding power adapter has also been upgraded to 5V/1A output, and the power interface has become a MiniUSB interface.

Prosperity era:

After years of smart phone education on the market, people have gradually accepted the essential smart phones in daily life, and increasingly rely on smart phones. The mobile phone screen is becoming larger and larger, and now the mobile phone is not only a communication tool, but an indispensable part of everyone's life. Games, videos, microblogging and WeChat are all accompanied by smart phones, followed by large screens and large batteries. Now the 5V/1A output current can no longer meet the growing demand. At this time, Qualcomm launched the Quick Charge1.0 technology mobile phone to double the output to 5V/2A output, which also solves some charging problems.

Samsung S4 power adapter

However, with the continuous enhancement of the new SoC performance, the increase of the main frequency, the increase of the core, and the increasing size of the screen, and the mobile phone battery technology has reached a "bottleneck", it is no longer possible to increase the battery capacity. Later, Qualcomm introduced the Quick Charge2.0 technology, which improved the previous 5V/2A output to "12V/1.35A or 9V/1.67A or 5V/2A" The specification of "abnormal".

Power adapter supporting QC2.0

Those wonderful flowers:

VOOC flash charge power adapter

Data line of VOOC

In addition to the above charging specifications, OPPO's VOOC flash charging (ear ringing: charging for 5 minutes, talking for 2 hours) must be included. It can be said that flash charging is a divine existence, and its specifications are also very "violent". Its output has reached 5V/5A. Without increasing the voltage, the current output is increased to achieve the purpose of fast charging, and special adaptation is made on the data line. The data cable suitable for VOOC flash charging will be a bit longer than the ordinary MicroUSB data cable socket, and the data cable end of VOOC has 7 pins, while the ordinary MicroUSB data cable has only 5 pins.

Samsung fast wireless charger

In addition to the strange charger, Samsung also has a "black technology" product. With the launch of S6 edge+and Note 5, the fast wireless charger can almost achieve the same charging efficiency as the ordinary QC2.0, and the output can reach 9V/1.67A. The use effect has been comparable to that of the ordinary plug-in fast charging.

Now when the battery technology has reached a bottleneck and can not solve the balance problem between the battery life and performance in a short time, manufacturers are constantly trying to speed up the charging speed, so that users can get a better user experience and shorten the waiting time for charging, which is also what we hope to see. Before the breakthrough of battery technology, we can only rely on various fast charging technologies and more energy-efficient hardware technologies (some pictures are from the network).

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